 | This article needs additional citations for verification .(January 2010) |
| California county routes in zone A | |
|---|---|
 Example of a California county route shield | |
| Highway names | |
| County | County Route X (CR X) or Route X |
| System links | |
There are 28 routes assigned to the "A" zone of the California Route Marker Program, which designates county routes in California. The "A" zone includes county highways in Lassen, Plumas, Shasta, Siskiyou, and Tehama counties.
County Road A1 | |
|---|---|
| Location | Lassen County |
| Length | 35.30 mi [1] (56.81 km) |
| Existed | 1963 (southern portion); 1983 (northern portion)–present [1] |
County Route A1 (CR A1), more commonly known as Route of the Olympic Torch, is a 35.3-mile (56.8 km) county route in Lassen County, California, United States. It gained its name as a result of being used for a portion of the 1984 Summer Olympics torch relay.
County Route A1 runs from Route 36 near Susanville to Route 139 near Eagle Lake. It was originally named Eagle Lake Road.
This route still exists as a bypass from Susanville for north–south motorists, but it is no longer signed as such.
Major junctions
The entire route is in Lassen County.
| Location | mi [2] [1] | km | Destinations | Notes | |
|---|---|---|---|---|---|
| | 0.0 | 0.0 |  SR 36 – Red Bluff, Susanville | Southern terminus | |
| | 14.2 | 22.9 | Gallatin Road | Former northern terminus | |
| Spaulding | 27.1 | 43.6 | Lake View Drive | Only major road access to Spaulding | |
| | 35.3 | 56.8 |  SR 139 – Susanville, Adin | Northern terminus | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
County Road A2 | |
|---|---|
| Susanville Road | |
| Location | Lassen County |
| Length | 11.41 mi [1] (18.36 km) |
| Existed | 1958–present [1] |
County Route A2 (CR A2), known entirely as Susanville Road, is a county route in Lassen County, California, United States, connecting SR 299 to SR 139.
Major junctions
The entire route is in Lassen County.
| Location | mi | km | Destinations | Notes | |
|---|---|---|---|---|---|
| Bieber | 0.0 | 0.0 | Tulelake, Klamath Falls (Bieber Lookout Road) | Continuation beyond SR 299 | |
| 0.0 | 0.0 |  SR 299 – Alturas, Bieber, Mount Shasta, Redding | Western terminus | ||
| | 1.4 | 2.3 | Valley Cutoff Road | ||
| | 8.4 | 13.5 | Bassett Road | ||
| | 11.4 | 18.3 | SR 139 – Susanville, Adin | Eastern terminus | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
County Road A3 | |
|---|---|
| Standish-Buntingville Road | |
| Location | Lassen County |
| Length | 8.45 mi [1] (13.60 km) |
| Existed | 1958–present [1] |
County Route A3 (CR A3), or Standish–Buntingville Road, is a road in Lassen County, California, United States, connected to U.S. Route 395, and functions as a bypass for northbound traffic around Susanville. At its northern end it is signed for Reno (via US 395), and its southern end for Lakeview, also via US 395.
This route still serves as bypass for north–south 395 motorists, but is no longer signed as such.
Major junctions
The entire route is in Lassen County.
| Location | mi | km | Destinations | Notes | |
|---|---|---|---|---|---|
| | 0.0 | 0.0 |  US 395 – Susanville, Reno | Southern terminus | |
| Buntingville | 0.2 | 0.32 | Lakecrest Road | ||
| | 2.2 | 3.5 | Sunnyside Road | ||
| | 6.5 | 10.5 | Capezzoli Lane | ||
| Standish | 8.5 | 13.7 | US 395 – Alturas, Klamath Falls | Northern terminus | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
County Road A5 | |
|---|---|
| Bowman Road | |
| Location | Tehama County |
| Length | 14.27 mi [1] (22.97 km) |
| Existed | 1958–present [1] |
County Route A5 (CR A5), or Bowman Road, is a road in Tehama County, California, United States, connecting SR 36 in Rosewood to I-5 in Cottonwood.
Major junctions
The entire route is in Tehama County.
| Location | mi | km | Destinations | Notes | |
|---|---|---|---|---|---|
| Rosewood | 0.0 | 0.0 | SR 36 – Platina, Red Bluff | Western terminus | |
| | 11.3 | 18.2 | Evergreen Road, Plateau Drive | Trucks not advisable on Evergreen Road | |
| | 11.8 | 19.0 | Hooker Creek Road | Only major road access to Hooker | |
| | 14.3 | 23.0 |  I-5 – Red Bluff, Redding | Interchange; eastern terminus; western terminus of CR A17; I-5 exit 662; former US 99 south | |
| | 14.3 | 23.0 |  CR A17 (Main Street) / Lake California Drive – Cottonwood, Lake California | Continuation beyond I-5 | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
County Road A6 | |
|---|---|
| Manton Road | |
| Location | Tehama County |
| Length | 15.60 mi [1] (25.11 km) |
| Existed | 1958–present [1] |
County Route A6 (CR A6), or Manton Road, is a road in Tehama County, California, United States, connecting SR 36 in Dales to Forward Road in Manton.
Major junctions
The entire route is in Tehama County.
| Location | mi | km | Destinations | Notes | |
|---|---|---|---|---|---|
| Dales | 0.0 | 0.0 | SR 36 – Red Bluff, Susanville | Western terminus | |
| | 8.8 | 14.2 | Wildcat Road | ||
| Manton | 15.6 | 25.1 | Forward Road, Manton Road – Shingletown | Eastern terminus | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
County Road A7 | |
|---|---|
| Location | Tehama County |
| Length | 4.96 mi [1] (7.98 km) |
| Existed | 1958–present [1] |
County Route A7 (CR A7) is a road in Tehama County, California, United States, connecting Ridge Road to SR 36 in Red Bluff. The route is known as Live Oak Road, Wilder Road, and Walnut Street.
Major junctions
The entire route is in Tehama County.
| Location | mi | km | Destinations | Notes | |
|---|---|---|---|---|---|
| | 0.0 | 0.0 | Live Oak Road, Ridge Road | Western terminus | |
| | 3.3 | 5.3 | Baker Road | ||
| Red Bluff | 3.5 | 5.6 | Paskenta Road | ||
| 5 | 8.0 |  SR 36 / I-5 BL (Main Street) | Eastern terminus; former US 99 | ||
| 5 | 8.0 | Walnut Street | Continuation beyond SR 36 | ||
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
County Road A8 | |
|---|---|
| Location | Tehama County |
| Length | 13.53 mi [1] (21.77 km) |
| Existed | 1967–present [1] |
County Route A8 (CR A8) is a road in Tehama County, California, United States, connecting SR 99 in Los Molinos to SR 36 in Red Bluff. The route is known as Aramayo Way in Los Molinos, C Street and 5th Street in Tehama, San Benito Avenue, Road 99W or State Highway 99W (despite the old highway being a U.S. Route), and South Main Street and Main Street in Red Bluff.
The route between Proberta and Red Bluff follows the former U.S. Route 99W up to where it met up with former U.S. Route 99E (present day SR 36 / Antelope Boulevard), reuniting both with the former U.S. Route 99 (at the intersection of Main Street and Antelope Boulevard / Oak Street) in downtown Red Bluff.
Major junctions
The entire route is in Tehama County.
| Location | mi | km | Destinations | Notes | |
|---|---|---|---|---|---|
| Los Molinos | 0.0 | 0.0 |  SR 99 | Southern terminus; former US 99E | |
| Tehama | 1.4 | 2.3 |  CR A11 (5th Street) / Tehama Avenue – Corning | Eastern terminus of CR A11 | |
| Proberta | 6.1 | 9.8 | State Highway 99W, Kindlespire Road | Former US 99W south | |
| 6.2 | 10.0 | Flores Avenue | |||
| Rawson | 10.7 | 17.2 | Riverside Avenue | ||
| Red Bluff | 12 | 19 | I-5 – Redding, Sacramento, San Francisco | Interchange; south end of I-5 BL overlap; I-5 north exit 647; south exit 647A | |
| 13.5 | 21.7 |  SR 36 / I-5 BL north (Main Street, Antelope Boulevard) / Oak Street | Northern terminus; north end of I-5 BL overlap; Main Street is former US 99 north; Antelope Boulevard is former US 99E south | ||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
| |||||
County Road A9 | |
|---|---|
| Location | Tehama County |
| Length | 30.27 mi [1] (48.71 km) |
| Existed | 1967–present [1] |
County Route A9 (CR A9) is a road in Tehama County, California, United States, connecting Round Valley Road in Paskenta to SR 99 near Vina. The route is known as Paskenta Road, Corning Road, Solano Street in Corning, Hoag Road, Hall Road, and South Avenue.
Major junctions
The entire route is in Tehama County.
| Location | mi | km | Destinations | Notes | |
|---|---|---|---|---|---|
| Paskenta | 0.0 | 0.0 | Round Valley Road | Western terminus | |
| | 0.6 | 0.97 | Lowrey Road | ||
| Flournoy | 6.6 | 10.6 | Paskenta Road | ||
| | 18.7 | 30.1 | Rawson Road | ||
| Corning | 19.6 | 31.5 | I-5 – Sacramento, Redding | Interchange; I-5 exit 631 | |
| 19.7 | 31.7 | Highway 99W, Edith Avenue | Former US 99W south | ||
| 20.7 | 33.3 | Third Street | Former US 99W north | ||
| | 25.1 | 40.4 | South Avenue, Hall Road | ||
| Vina | 30.3 | 48.8 | SR 99 – Chico, Red Bluff | Eastern terminus; former US 99E | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
County Road A10 | |
|---|---|
| Location | Siskiyou County |
| Length | 15.19 mi [1] (24.45 km) |
| Existed | 1959–present [1] |
County Route A10 (CR A10), known locally as "Everitt Memorial Highway", is a 15.19-mile (24.4 km) long [1] county road in Siskiyou County, California, United States, near Mount Shasta. It runs from Interstate 5 in the town of Mount Shasta City to a dead end at the 8,000-foot (2,400 m) level on 14,162-foot (4,317 m) Mount Shasta. The route follows Lake Street, Mount Shasta Boulevard, Alma Street, and Rockfellow Drive, right before reaching Everitt Memorial Highway.
The highway, completed in 1958 at a cost of $980,000 and designated in 1959, [1] was originally built to provide access to the Mount Shasta Ski Bowl, which was destroyed by an avalanche in 1978. [3] Today, the highway provides access to Mount Shasta for climbers, skiers, and anyone wanting access to the mountain.
In wintertime, the road is kept open only to the U.S.F.S. outpost at the 6,000-foot (1,800 m) level.
Major junctions
The entire route is in Siskiyou County.
| Location | mi | km | Destinations | Notes | |
|---|---|---|---|---|---|
| Mount Shasta | 0.0 | 0.0 | West Jessie Street, Hatchery Lane | Continuation beyond I-5 | |
| 0.0 | 0.0 | I-5 – Weed, Dunsmuir | Interchange; western terminus; I-5 exit 738 | ||
| 0.5 | 0.80 | North Mount Shasta Boulevard south (I-5 BL south) / East Lake Street | West end of I-5 BL overlap; former US 99 south | ||
| 0.7 | 1.1 | North Mount Shasta Boulevard north (I-5 BL north) / West Alma Street | East end of I-5 BL overlap; former US 99 north | ||
| 1.1 | 1.8 | Rockfellow Drive west | |||
| 1.3 | 2.1 | North Washington Drive, Rockfellow Drive east | |||
| | 15.2 | 24.5 | Old Ski Bowl Trailhead | Eastern terminus; dead end | |
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
| |||||
County Road A11 | |
|---|---|
| Location | Tehama County |
| Length | 5.16 mi [1] (8.30 km) |
| Existed | 1967–present [1] |
County Route A11 (CR A11) is a county route in Tehama County, California, United States, connecting Interstate 5 at exit 636 with CR A8 in Tehama. The route is mostly known as Gyle Road, while most of the portion within the city of Tehama is known as 5th Street.
Major junctions
The entire route is in Tehama County.
| Location | mi | km | Destinations | Notes | |
|---|---|---|---|---|---|
| | 0.0 | 0.0 | Gyle Road – Rancho Tehama | Continuation beyond I-5 | |
| | 0.0 | 0.0 | I-5 – Sacramento, Redding | Interchange; western terminus; I-5 exit 636 | |
| | 0.3 | 0.48 | Truckee Avenue | ||
| | 1.8 | 2.9 | State Highway 99W | Former US 99W | |
| | 4.2 | 6.8 | Hall Road | ||
| Tehama | 5.2 | 8.4 |  CR A8 (C Street, 5th Street) / Tehama Avenue – Los Molinos, Gerber | Eastern terminus | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
County Road A12 | |
|---|---|
| 99-97 Cutoff | |
| Location | Siskiyou County |
| Length | 17.90 mi [1] (28.81 km) |
County Route A12 (CR A12), known locally as the "99-97 Cutoff", or more commonly, "the 97 cutoff", is a two-lane rural highway in Siskiyou County, California, United States, with a length of 17.9 miles (28.8 km). [1] A12 begins in the west at its junction with Old 99 Highway, which was once US 99. Just a few dozen yards to the east, it intersects Interstate 5. Its eastern terminus is at US 97, 12 miles (19 km) north of Weed.
One mile east of the Interstate junction, it passes through the tiny village of Grenada, the only population center of any merit along the route. 7 miles (11 km) further east is the burg Mayten, which consists only of a convenience store, a church, and an elementary school.
The route is heavily used by travelers and truckers southbound on Interstate 5 who wish to use US 97 northbound en route to Klamath Falls and points north. This route saves over 13 miles (21 km) than if the alternative routing via I-5 to Weed, then north on US 97 was used. Hence, the local name "97 cutoff".
The western two-thirds of the route passes through agricultural areas, and is very reminiscent of two-lane farm roads in California's Central Valley. However, the eastern portion is very scenic, passing through an area with towering dark red crags and buttes to the north.
Major junctions
The entire route is in Siskiyou County.
| Location | mi | km | Destinations | Notes | |
|---|---|---|---|---|---|
| | 0.0 | 0.0 | 99-97 Cutoff to Old Highway 99 – Yreka, Gazelle | Continuation beyond I-5; connects to former US 99 | |
| Grenada | 0.0 | 0.0 | I-5 – Redding, Portland | Interchange; western terminus; I-5 exit 766 | |
| 0.8 | 1.3 |  CR A28 (Montague Grenada Road) – Montague | Southern terminus of CR A28 | ||
| | 7.6 | 12.2 |  CR A29 (Big Springs Road) – Lake Shastina, Weed, Little Shasta | Northern terminus of CR A29; only major road access to Big Springs | |
| | 13.6 | 21.9 | Harry Cash Road – Little Shasta | ||
| | 18 | 29 |  US 97 – Weed, Dorris | Eastern terminus | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
County Road A13 | |
|---|---|
| Walker Memorial Road | |
| Location | Plumas County |
| Length | 3.79 mi [1] (6.10 km) |
| Existed | 1959–present |
County Route A13 (CR A13), known entirely as Walker Memorial Road, is a road in Plumas County, California, United States, connecting SR 36 to SR 147.
Major junctions
The entire route is in Plumas County.
| Location | mi | km | Destinations | Notes | |
|---|---|---|---|---|---|
| | 0.0 | 0.0 | Road 322 | Continuation beyond SR 36 | |
| | 0.0 | 0.0 | SR 36 – Susanville, Chester | Western terminus | |
| Lake Almanor Peninsula | 1.4 | 2.3 | Foxwood Drive | Only major road access to Lake Almanor Peninsula | |
| Hamilton Branch | 3.8 | 6.1 |  SR 147 – Greenville, Westwood | Eastern terminus | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
County Road A14 | |
|---|---|
| Graeagle Johnsville Road | |
| Location | Plumas County |
| Length | 5.69 mi [1] (9.16 km) |
| Existed | 1959–present [1] |
County Route A14 (CR A14), or Graeagle Johnsville Road, is a road in Plumas County, California, United States, connecting SR 89 in Graeagle to Main Street in Johnsville.
Major junctions
The entire route is in Plumas County.
| Location | mi | km | Destinations | Notes | |
|---|---|---|---|---|---|
| Johnsville | 0.0 | 0.0 | Main Street | Western terminus; only major road access to Johnsville | |
| Plumas Eureka | 3.7 | 6.0 | Poplar Valley Road | Only major road access to Plumas Eureka | |
| Mohawk | 4.3 | 6.9 | Mohawk Highway Road | ||
| Graeagle | 5.7 | 9.2 |  SR 89 – Truckee, Quincy | Eastern terminus | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
County Road A15 | |
|---|---|
| Location | Plumas County |
| Length | 8.35 mi [1] (13.44 km) |
| Existed | 1959–present [1] |
County Route A15 (CR A15), or Portola McLears Road for most of the route, is a road in Plumas County, California, United States, connecting SR 89 in Valley Ranch to SR 70 in Portola. On its northern end, after passing through the Old Town commercial district of Portola, A15 passes the Western Pacific Railroad Museum.
Major junctions
The entire route is in Plumas County.
| Location | mi | km | Destinations | Notes | |
|---|---|---|---|---|---|
| Valley Ranch | 0.0 | 0.0 | SR 89 | Southern terminus | |
| Gold Mountain | 3.7 | 6.0 | Bear Run Road, Village Trail Road | ||
| Portola | 7.8 | 12.6 | Main Street | ||
| 8.2 | 13.2 | South Gulling Street | |||
| 8.4 | 13.5 |  SR 70 (East Sierra Avenue, West Sierra Avenue) | Northern terminus | ||
| 8.4 | 13.5 | Gulling Street | Continuation beyond SR 70 | ||
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
County Road A16 | |
|---|---|
| Location | Shasta County |
| Length | 38.74 mi [1] (62.35 km) |
| Existed | 1960–present [1] |
County Route A16 (CR A16) is a county route in Shasta County, California, United States, connecting SR 36 in Platina to SR 273 in Redding. The route is known as Platina Road, Placer Road, and Placer Street in Redding.
Known locally as "Ditch Grade Road"; the final 6.5-mile (10.5 km) section before the junction with SR 36 closely follows the contour of hillside as this route was previously used to bring water to the mine at Platina. There is a rock formation some 6.5 miles (10.5 km) from SR 36 known as Old Man Rock or The Lincoln Memorial.
Major junctions
The entire route is in Shasta County.
| Location | mi | km | Destinations | Notes | |
|---|---|---|---|---|---|
| Platina | 0.0 | 0.0 | Beegum George Road | Continuation beyond SR 36; unpaved road | |
| 0.0 | 0.0 | SR 36 – Platina, Red Bluff | Western terminus | ||
| Igo | 26.6 | 42.8 |   Clear Creek Road, Gas Point Road to SR 273 – Gas Point | ||
| 28 | 45 | Cloverdale Road – Olinda, Anderson | |||
| Centerville | 31.5 | 50.7 | Texas Springs Road | ||
| Redding | 37 | 60 | Buenaventura Boulevard | ||
| 38.6 | 62.1 |  SR 273 south (California Street) | One-way southbound | ||
| 38.7 | 62.3 | SR 273 north (Pine Street) | Eastern terminus; one-way northbound | ||
| 38.7 | 62.3 | Placer Street | Continuation beyond SR 273 | ||
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
County Road A17 | |
|---|---|
| Location | Tehama–Shasta County |
| Length | 19.19 mi [1] (30.88 km) |
| Existed | 1963–present [1] |
County Route A17 (CR A17) is a county route in Shasta and Tehama counties in the U.S. state of California, connecting Interstate 5 near Cottonwood to SR 44 near Inwood. The route is known as Balls Ferry Road, Ash Creek Road, and Dersch Road. In Cottonwood, the route follows Main Street, Front Street, Magnolia Street, Chestnut Street, and First Street.
Major junctions
| County | Location | mi | km | Destinations | Notes |
|---|---|---|---|---|---|
| Tehama | | 0.0 | 0.0 |  CR A5 (Bowman Road) | Continuation beyond I-5 |
| | 0.0 | 0.0 | I-5 – Red Bluff, Redding | Interchange; western terminus; eastern terminus of CR A5; I-5 exit 662; former US 99 south | |
| | 0.0 | 0.0 | Lake California Drive – Lake California | ||
| Shasta | Cottonwood | 1.2 | 1.9 | Main Street | Former US 99 north |
| | 3.8 | 6.1 | Panorama Point Road | ||
| | 5.8 | 9.3 | Balls Ferry Road | ||
| | 7.1 | 11.4 | Gover Road | ||
| | 15.8 | 25.4 | Dersch Road | ||
| Shingletown | 19.2 | 30.9 |  SR 44 | Eastern terminus | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
County Road A18 | |
|---|---|
| Lake Boulevard | |
| Location | Shasta County |
| Length | 8.83 mi [1] (14.21 km) |
| Existed | 1960–present [1] |
| Tourist routes |  Lake Boulevard [4] |
County Route A18 (CR A18), or Lake Boulevard, is a road in Shasta County, California, United States, on the State Scenic Highway System connecting SR 273 (as well as Interstate 5 and SR 299) in Redding to Shasta Dam.
Major junctions
The entire route is in Shasta County.
| Location | mi | km | Destinations | Notes | |
|---|---|---|---|---|---|
| Redding | 0.0 | 0.0 |  SR 299 east (Lake Boulevard) | Continuation beyond SR 273 | |
| 0.0 | 0.0 |  SR 273 / SR 299 west (North Market Street) | Southern terminus; former US 99 | ||
| 2 | 3.2 | Oasis Road | |||
| Shasta Lake | 4.6 | 7.4 | Pine Grove Avenue, Walker Mine Road | ||
| 6.7 | 10.8 |   SR 151 (Shasta Dam Boulevard) to I-5 – Shasta Dam | |||
| | 8.8 | 14.2 | SR 151 east (Shasta Dam Boulevard) / Shasta Dam Access Road | Roundabout; northern terminus; western terminus of SR 151; Shasta Dam Access Road is restricted to dam personnel | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
County Road A19 | |
|---|---|
| McArthur Road | |
| Location | Shasta County |
| Length | 17.40 mi [1] (28.00 km) |
| Existed | 1960–present [1] |
County Route A19 (CR A19), or McArthur Road, is a county route in Shasta County, California, United States, connecting SR 299 to SR 89.
Major junctions
The entire route is in Shasta County.
| Location | mi | km | Destinations | Notes | |
|---|---|---|---|---|---|
| | 0.0 | 0.0 | SR 89 – McCloud, Burney Falls, Lassen Park | Western terminus | |
| Dana | 4.6 | 7.4 | Ted Elder Road | ||
| | 10.6 | 17.1 | Island Road | ||
| Glenburn | 11.9 | 19.2 |  CR A20 (Glenburn Road) | Northern terminus of CR A20 | |
| McArthur | 17.4 | 28.0 | SR 299 – Redding, Alturas | Eastern terminus | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
County Road A20 | |
|---|---|
| Glenburn Road | |
| Location | Shasta County |
| Length | 5.56 mi [1] (8.95 km) |
| Existed | 1960–present [1] |
County Route A20 (CR A20), or Glenburn Road, is a county route in Shasta County, California, United States, connecting SR 89 to CR A19 (McArthur Road).
Major junctions
The entire route is in Shasta County.
| Location | mi | km | Destinations | Notes | |
|---|---|---|---|---|---|
| Fall River Mills | 0.0 | 0.0 | Bridge Street | Continuation beyond SR 299 | |
| 0.0 | 0.0 | SR 299 – Redding, Alturas | Southern terminus | ||
| | 3.6 | 5.8 | Gomez Road | Only major road access to Gomez | |
| Glenburn | 5.5 | 8.9 | Brown Road | ||
| 5.6 | 9.0 |  CR A19 (McArthur Road) to SR 89 – McCloud | Northern terminus | ||
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
County Road A21 | |
|---|---|
| Location | Lassen County |
| Length | 22.60 mi [1] (36.37 km) |
| Existed | 1963–present [1] |
County Route A21 (CR A21) is a county route in Lassen County, California, United States, connecting SR 147 to SR 44, intersecting SR 36 along the way. The route is known as 3rd Street and Ash Street in Westwood and Mooney Road for the remainder of the route.
Major junctions
The entire route is in Lassen County.
| Location | mi | km | Destinations | Notes | |
|---|---|---|---|---|---|
| Clear Creek | 0.0 | 0.0 | SR 147 – Chester, Red Bluff, Greenville, Quincy | Southern terminus | |
| Westwood | 3.5 | 5.6 | SR 36 – Susanville, Chester | ||
| | 22.6 | 36.4 | SR 44 – Susanville, Redding | Northern terminus | |
| | 22.6 | 36.4 |  FH 21 – Antelope Lookout, Champs Flat, Eagle Lake | Continuation beyond SR 44; unpaved road | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
County Road A22 | |
|---|---|
| Location | Plumas County |
| Length | 4.54 mi [1] (7.31 km) |
| Existed | 1961–present [1] |
County Route A22 (CR A22) is a county route in Plumas County, California, United States, connecting SR 89 in Crescent Mills to Taylorsville. The route is mostly known as Arlington Road, along with a small section of Main Street in Taylorsville.
Major junctions
The entire route is in Plumas County.
| Location | mi | km | Destinations | Notes | |
|---|---|---|---|---|---|
| Crescent Mills | 0.0 | 0.0 | SR 89 – Quincy, Greenville | Western terminus | |
| | 1.7 | 2.7 | Emigrant Road | ||
| Taylorsville | 4.5 | 7.2 | Main Street, Nelson Street | Eastern terminus; only major road access to Taylorsville | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
County Road A23 | |
|---|---|
| Location | Plumas–Sierra County |
| Length | 12.81 mi [1] (20.62 km) |
| Existed | 1961–present [1] |
County Route A23 (CR A23) is a county route in Plumas and Sierra counties in the U.S. state of California, connecting SR 49 / SR 89 near Sattley to SR 70 near Beckwourth passing through the Sierra Valley on its west side. In the northerly direction, CR A23 begins at the junction of SR 49 / SR 89 at Sattley, formerly known as Church's Corners, which is a census-designated place in Sierra County. The road leaves Sattley as Westside Road. It passes near Calpine, a census-designated place also in Sierra County, where the road becomes Beckwourth-Calpine Road and continues to SR 70 near Beckwourth, a census-designated place in Plumas County.
Major junctions
| County | Location | mi | km | Destinations | Notes |
|---|---|---|---|---|---|
| Sierra | Calpine | 0.0 | 0.0 |  SR 49 / SR 89 – Downieville, Quincy, Truckee | Southern terminus |
| | 3.7 | 6.0 | Calpine Road – Calpine | ||
| Plumas | Beckwourth | 12.8 | 20.6 | SR 70 – Beckwourth, Portola | Northern terminus |
| 12.8 | 20.6 | Road 125 | Continuation beyond SR 70 | ||
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
County Road A24 | |
|---|---|
| Location | Plumas–Sierra County |
| Length | 15.35 mi [1] (24.70 km) |
| Existed | 1961–present [1] |
County Route A24 (CR A24) is a county route in Plumas and Sierra counties in the U.S. state of California, connecting SR 49 in Loyalton to SR 70 in Hawley. The route is known as 3rd Street and Beckwith Street in Loyalton, Beckwith Road, Sierra Valley Road, Dyson Lane, and Beckworth Loyalton Road.
Major junctions
| County | Location | mi | km | Destinations | Notes |
|---|---|---|---|---|---|
| Sierra | Loyalton | 0.0 | 0.0 | 3rd Street | Continuation beyond SR 49 |
| 0.0 | 0.0 | SR 49 | Southern terminus | ||
| Plumas | | 6.3 | 10.1 | Dyson Lane east | Connects to SR 49 |
| Hawley | 15.4 | 24.8 | SR 70 | Northern terminus | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
County Road A25 | |
|---|---|
| Herlong Access Road | |
| Location | Lassen County |
| Length | 4.20 mi [1] (6.76 km) |
| Existed | 1966–present [1] |
County Route A25 (CR A25), or Herlong Access Road, is a short highway in Lassen County, California, United States. Paired with CR A26, it services Herlong and the Sierra Army Depot.
Major junctions
The entire route is in Lassen County.
| Location | mi | km | Destinations | Notes | |
|---|---|---|---|---|---|
| Herlong Junction | 0.0 | 0.0 | US 395 | Western terminus | |
| | 3.2 | 5.1 | Honey Lake Road | Only major road access to Herlong Airport-H37 | |
| Patton Village | 4.2 | 6.8 | Pole Line Road | Eastern terminus | |
| 4.2 | 6.8 | Herlong Access Road | Continuation beyond Pole Line Road | ||
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
County Road A26 | |
|---|---|
| Garnier Road | |
| Location | Lassen County |
| Length | 3.82 mi [1] (6.15 km) |
| Existed | 1966–present [1] |
County Route A26 (CR A26), or Garnier Road, is a short highway in Lassen County, California, United States. Paired with CR A25, it services Herlong and the Sierra Army Depot.
Major junctions
The entire route is in Lassen County.
| Location | mi | km | Destinations | Notes | |
|---|---|---|---|---|---|
| | 0.0 | 0.0 | US 395 | Southern terminus | |
| | 2.7 | 4.3 | Herlong Landfill Road | ||
| Patton Village | 3.8 | 6.1 | Herlong Access Road | Northern terminus | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
County Road A27 | |
|---|---|
| Location | Lassen County |
| Length | 15.02 mi [1] (24.17 km) |
| Existed | 1971–present [1] |
County Route A27 (CR A27) or Center Road is a county route in Lassen County, California, United States, connecting SR 36 in Susanville to US 395 in Litchfield, passing by the High Desert State Prison. The route is known as East Riverside Drive in Susanville, Johnstonville Road,
Major junctions
The entire route is in Lassen County.
| Location | mi | km | Destinations | Notes | |
|---|---|---|---|---|---|
| Susanville | 0.0 | 0.0 | SR 36 | Western terminus | |
| 0.5 | 0.80 | Skyline Road | |||
| Johnstonville | 3.8 | 6.1 | Johnstonville Road – Johnstonville | ||
| Leavitt | 6.2 | 10.0 | Rice Canyon Road | Serves High Desert State Prison | |
| | 10.2 | 16.4 | Belfast Road | Only major road access to Belfast | |
| Litchfield | 13.2 | 21.2 | Cut Off Road | ||
| 15 | 24 | US 395 – Reno | Eastern terminus; right turn to Reno (US 395 south) is via Market Street | ||
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
County Road A28 | |
|---|---|
| Location | Siskiyou County |
| Length | 20.1 mi (32.3 km) |
| Existed | 1983–present |
County Route A28 (CR A28) is a two-lane rural highway in Siskiyou County, California, United States, connecting CR A12 (the 99-97 Cutoff) to Copco Road near Hornbrook. The route is known as Montague Grenada Road, 11th Street in Montague, and Ager Road.
CR A28 begins at CR A12 in Grenada, connecting Grenada with Interstate 5 near Hornbrook via Montague. It is a flat, level route, and for this reason, was the original preferred routing for both US 99 and I-5 through the area. In both instances, the routing was changed because of intense lobbying by officials in Yreka, who decried the fact that the major highway through the county would bypass the county seat. Thus, both highways ended up being built over far more rigorous terrain at a huge cost increase.
A28 serves the aforementioned three towns, as well as numerous homes and ranches along the way.
Major junctions
The entire route is in Siskiyou County.
| Location | mi | km | Destinations | Notes | |
|---|---|---|---|---|---|
| Grenada | 0.0 | 0.0 |  CR A12 (99-97 Cutoff) – Weed, Big Springs, Klamath Falls | Southern terminus | |
| | 4.3 | 6.9 | Oberlin Road, Breceda Lane – Yreka | ||
| Montague | 5.7 | 9.2 |  SR 3 south (Montague Road) – Yreka | South end of SR 3 overlap | |
| 6 | 9.7 | SR 3 north (East Webb Street) / West Webb Street | North end of SR 3 overlap | ||
| | 9 | 14 | Yreka Ager Road, Shelley Road – Yreka | Serves Siskiyou County Airport | |
| | 15.3 | 24.6 | York Road | ||
| Ager | 16.6 | 26.7 | Ager Beswick Road – Copco Lake | ||
| | 20.10 | 32.35 | Copco Road (Juniper Road) – Hornbrook, Iron Gate Lake | Northern terminus | |
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
| |||||
County Road A29 | |
|---|---|
| Big Springs Road | |
| Location | Siskiyou County |
| Length | 11.60 mi (18.67 km) |
| Existed | 1983–present |
County Route A29 (CR A29), or Big Springs Road, is a county route in Siskiyou County, California, United States. It connects US 97 to CR A12 (the 99-97 Cutoff), passing through the census-designated place of Lake Shastina and the unincorporated community of Big Springs.
Major junctions
The entire route is in Siskiyou County.
| Location | mi | km | Destinations | Notes | |
|---|---|---|---|---|---|
| | 0.0 | 0.0 | US 97 – Weed, Dorris | Southern terminus | |
| Lake Shastina | 1.7 | 2.7 | Jackson Ranch Road | Only major road access to Lake Shastina | |
| Big Springs | 9.5 | 15.3 | East Louie Road | ||
| | 11.6 | 18.7 | CR A12 (99-97 Cutoff) | Northern terminus | |
| | 11.6 | 18.7 | Big Springs Road | Continuation beyond CR A12 | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
Interstate 5 (I-5) is the main north–south Interstate Highway on the West Coast of the United States, running largely parallel to the Pacific Coast of the contiguous U.S. from Mexico to Canada. It travels through the states of California, Oregon, and Washington, serving several large cities on the West Coast, including San Diego, Los Angeles, Sacramento, Portland, and Seattle. It is the only continuous Interstate highway to touch both the Mexican and Canadian borders. Upon crossing the Mexican border at its southern terminus, the highway continues to Tijuana, Baja California, as Mexican Federal Highway 1 (Fed. 1). Upon crossing the Canadian border at its northern terminus, it continues to Vancouver as British Columbia Highway 99 (BC 99).
Northern California is a geographic and cultural region that generally comprises the northern portion of the U.S. state of California, spanning the northernmost 48 of the state's 58 counties. Northern California in its largest definition is determined by dividing the state into two regions, the other being Southern California. The main northern population centers include the San Francisco Bay Area, the Greater Sacramento area, the Redding, California, area south of the Cascade Range, and the Metropolitan Fresno area. Northern California also contains redwood forests, along with most of the Sierra Nevada, including Yosemite Valley and part of Lake Tahoe, Mount Shasta, and most of the Central Valley, one of the world's most productive agricultural regions. Northern California is also home to Silicon Valley, the global headquarters for some of the most powerful tech and Internet-related companies in the world, including Meta, Apple, Google, and Nvidia.
The Shasta Cascade region of California is located in the northeastern and north-central sections of the state bordering Oregon and Nevada, including far northern parts of the Central Valley and the Sierra Nevada mountain range.
State Route 99 (SR 99) is a north–south state highway in the U.S. state of California, stretching almost the entire length of the Central Valley. From its southern end at Interstate 5 (I-5) near Wheeler Ridge to its northern end at SR 36 near Red Bluff, SR 99 goes through the densely populated eastern parts of the valley. Cities served include Bakersfield, Delano, Tulare, Visalia, Fresno, Madera, Merced, Turlock, Modesto, Manteca, Stockton, Sacramento, Yuba City, and Chico.
State Route 3 is a state highway in the U.S. state of California that serves Trinity and Siskiyou counties. It runs from SR 36 north along the shore of Trinity Lake, Fort Jones and Etna. The route then approaches Yreka, intersecting with Interstate 5 (I-5), and turns east to Montague. The road was numbered SR 3 in 1964, and most of it has been part of the state highway system since 1933.
Lassen National Forest is a United States national forest of 1,700 square miles (4,300 km2) in northeastern California. It is named after pioneer Peter Lassen, who mined, ranched and promoted the area to emigrant parties in the 1850s.
State Route 89 is a state highway in the U.S. state of California that travels in the north–south direction, serving as a major thoroughfare for many mountain communities in the Sierra Nevada and the Cascade Range. It starts from U.S. Route 395 near Topaz Lake, winding its way up to the 8,314-foot (2,534 m) Monitor Pass, down to the Carson River, and up again over the 7,740-foot (2,359 m) Luther Pass. From that point on, the route generally loses elevation on its way past Lake Tahoe, through Tahoe and Plumas National Forests until Lake Almanor. For roughly nine miles the route is then a part of State Route 36. The route then ascends to the 5,753-foot (1,754 m) Morgan Summit. After it enters Lassen Volcanic National Park it continues to gain elevation until it reaches its highest point in an unnamed pass in the middle of Lassen Peak and Bumpass Mountain. The road then descends and heads northwest, finally terminating at Interstate 5 at the foot of Mount Shasta at around 3,600 feet (1,100 m).
State Route 36 is an east–west state highway in the U.S. state of California that is routed from U.S. Route 101 in Humboldt County to U.S. Route 395 just east of Susanville in Lassen County. The highway passes through Red Bluff, the county seat of Tehama County, on the northern edge of the Sacramento Valley. The portion of SR 36 travelling past Lassen Volcanic National Park and Lake Almanor is part of the Volcanic Legacy Scenic Byway, a National Scenic Byway. Also, Route 36 between Alton and Susanville is a designated Blue Star Memorial Highway.
State Route 44 is a state highway in the U.S. State of California that travels in an east–west direction from State Routes 273 and 299 in Redding to Lassen Volcanic National Park before ending at State Route 36 west of Susanville. This final portion, between the park and its terminus, is part of the Volcanic Legacy Scenic Byway, a National Scenic Byway.
State Route 139 is a state highway in the U.S. state of California. Running from SR 36 in Susanville north to Oregon Route 39 at the Oregon state line, it forms part of the shortest route between Reno, Nevada, and Klamath Falls, Oregon. SR 139 cuts through much of Modoc National Forest and passes near Antelope Mountain and Tule Lake. North of SR 299 near Canby, SR 139 was built by the federal government and turned over to the state in about 1940; the remainder was built by a joint highway district of Lassen and Modoc Counties, completed in 1956, and given to the state in 1959.
Area code 530 is a telephone area code in the North American Numbering Plan (NANP) in northeastern and Northern California. It was created in 1997 in an area code split of 916.
State Route 263 is a state highway in the U.S. state of California in Siskiyou County, running parallel to Interstate 5 to the west. Route 263 connects State Route 3 near the north city limits of Yreka to State Route 96 eight miles north. Although SR 263 was once part of U.S. Route 99, it is not signed as part Business Loop 5.
California's 1st congressional district is a U.S. congressional district in California. Doug LaMalfa, a Republican, has represented the district since January 2013. Currently, it encompasses the northeastern part of the state. Since the 2022 election, it includes the counties of Butte, Colusa, Glenn, Lassen, Modoc, Shasta, Siskiyou, Sutter, and Tehama, and most of Yuba County. The largest cities in the district are Chico, Redding, and Yuba City.
Interstate 5 (I-5) is a major north–south route of the Interstate Highway System in the United States, stretching from the Mexican border at the San Ysidro crossing to the Canadian border near Blaine, Washington. The segment of I-5 in California runs 796.77 miles (1,282.28 km) across the length of the state from San Ysidro to the Oregon state line south of the Medford-Ashland metropolitan area. It is the longest interstate in California, and accounts for more than half of I-5's total length. It is also the second longest stretch of Interstate Highway with a single designation within a single state after I-10 in Texas.
Business routes of Interstate 5 (I-5) exist in both California and Washington. There are no business routes in Oregon as that state does not assign such designations for any of its Interstate Highways. However, Oregon Route 99 (OR 99) essentially acts as a business route for most of Oregon, along with OR 99W and OR 99E, which also has its own business route in Salem.
There are 21 routes assigned to the "E" zone of the California Route Marker Program, which designates county routes in California. The "E" zone includes county highways in Alpine, Amador, Butte, Calaveras, El Dorado, Placer, Plumas, Sacramento, Solano, Tuolumne, Yolo, and Yuba counties.
There are 45 routes assigned to the "J" zone of the California Route Marker Program, which designates county routes in California. The "J" zone includes county highways in Alameda, Calaveras, Contra Costa, Fresno, Kern, Inyo, Mariposa, Merced, Sacramento, San Benito, San Joaquin, Stanislaus, and Tulare counties.
There are 9 routes assigned to the "N" zone of the California Route Marker Program, which designates county routes in California. The "N" zone includes county highways lying in Los Angeles and Orange counties.
There are 34 routes assigned to the "S" zone of the California Route Marker Program, which designates county routes in California. The "S" zone includes county highways in Imperial, Orange, Riverside, San Diego, and Santa Barbara counties.
