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Maintained by | Walnut Creek, Concord, Pittsburg, and Contra Costa County, California |
---|---|
Length | 15.66 mi (25.20 km) |
Southwest end | Parkside Drive in Walnut Creek |
Major junctions | I-680 / SR 24 in Walnut Creek SR 4 in Pittsburg |
Northeast end | E 3rd St in Pittsburg |
Ygnacio Valley Road is a major arterial road in central Contra Costa County, California. It extends from Interstate 680 and SR 24 in Walnut Creek to SR 4 in Pittsburg. Also known as Kirker Pass Road and then Railroad Avenue for much of the northern portion, and briefly as Hillside Avenue at its southwest terminus, the road passes through Concord and borders Clayton.
The route begins near the Interstate 680/Highway 24 junction, at the westbound entrance to Highway 24 at Ygnacio Valley Road, although this portion is actually signed as Hillside Avenue. It then changes signage to Ygnacio Valley Road through an interchange with I-680 and continues though downtown Walnut Creek and Heather Farm Park. [1]
The road then enters Concord through Lime Ridge Open Space and continues into the Clayton Valley neighborhood. After the intersection with Clayton Road, it becomes Kirker Pass Road and makes an approximately 4.5 mile-long pass over the northern Diablo Range. It then enters Pittsburg, where it becomes Railroad Avenue at the Buchanan Road intersection. From here it continues through central Pittsburg before terminating at E 3rd St near the Pittsburg Marina. [2]
The entire route is in Contra Costa County.
Location | mi | km | Destinations | Notes | |
---|---|---|---|---|---|
Pittsburg | 0 | 0.0 | E 3rd Street | ||
1.15 | 1.85 | SR 4 – Concord, Antioch | Interchange; SR 4 exit 23 | ||
2.55 | 4.10 | Buchanan Road | |||
Concord | 7.80 | 12.55 | Clayton Road | ||
9.89 | 15.92 | Cowell Road | |||
Walnut Creek | 11.89 | 19.14 | Oak Grove Road | ||
13.06 | 21.02 | Walnut Avenue / Bancroft Road | |||
14.53 | 23.38 | Walnut Boulevard | |||
14.77 | 23.77 | Civic Drive | |||
15.08 | 24.27 | North Main Street to I-680 north – Sacramento | No Interchange | ||
15.45 | 24.86 | I-680 – Concord, Sacramento, San Jose | Northbound exit 46B; no northbound entrance | ||
15.66 | 25.20 | Parkside Drive | |||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi |
Contra Costa County is a county located in the U.S. state of California, in the East Bay of the San Francisco Bay Area. As of the 2020 United States Census, the population was 1,165,927. The county seat is Martinez. It occupies the northern portion of the East Bay region of the San Francisco Bay Area and is primarily suburban. The county's name refers to its position on the other side of the bay from San Francisco. Contra Costa County is included in the San Francisco–Oakland–Berkeley, CA Metropolitan Statistical Area.
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