The Big Rock Interchange is the I-430/I-630/Chenal Parkway interchange in west Little Rock, Arkansas. The name is derived from a large rock formation discovered during expansion.
The interchange was originally constructed in 1977, then in the mid-2000s it was decided to expand the interchange in an attempt to alleviate congestion. In 2011 an outcropping of Pennsylvanian Jackfork Formation sandstone and surrounding shale was discovered in the southeast quadrant of the project. The formation was estimated to weigh about 5 million pounds. Due to the size and hardness of the sandstone it was decided to leave the unique and distinctive formation in place as a landmark, rather than use explosives or some other method to try to remove it, and it was dubbed "The Big Rock".
When the original I-430 and I-630 interchange was constructed, about 14,000 vehicles a day traveled down each Interstate, and I-630 ended at a traffic signal at Shackleford Road. With expansion and growth in west Little Rock, and particularly in the Chenal Valley neighborhood, the interchange had become progressively more congested by the early 2000s. In 2004 the Arkansas Highway and Transportation Department began a study to expand the interchange. The first of three phases began January 2009. First phase was construction of an additional I-630 west to I-430 north lane, modification to Financial Centre Parkway (provides access to Chenal Parkway) just west of Shackleford Road, and an additional traffic signal added to Hermitage Drive. Phase two involved preparing the interchange for future work and mainly involved the I-430 bridge over I-630 which was lengthened. Phase three completed the flyover lanes. The $150 million makeover took over six years to complete. Since construction ended, over 200,000 vehicles use the interchange daily.
Interstate 40 (I-40) is a major east–west transcontinental Interstate Highway in the southeastern and southwestern portions of the United States. At a length of 2,556.61 miles (4,114.46 km), it is the third-longest Interstate Highway in the country, after I-90 and I-80. From west to east, it passes through California, Arizona, New Mexico, Texas, Oklahoma, Arkansas, Tennessee, and North Carolina. Its western terminus is at I-15 in Barstow, California, while its eastern terminus is at a concurrency with U.S. Route 117 (US 117) and North Carolina Highway 132 (NC 132) in Wilmington, North Carolina. Major cities served by the interstate include Flagstaff, Arizona; Albuquerque, New Mexico; Amarillo, Texas; Oklahoma City, Oklahoma; Little Rock, Arkansas; Memphis, Nashville, and Knoxville in Tennessee; and Asheville, Winston-Salem, Greensboro, Durham, Raleigh, and Wilmington in North Carolina.
Interstate 49 (I-49) is a north–south Interstate Highway that exists in multiple segments: the original portion entirely within the state of Louisiana with an additional signed portion extending from I-220 in Shreveport to the Arkansas state line, three newer sections in Arkansas, and a new section that opened in Missouri. Its southern terminus is in Lafayette, Louisiana, at I-10 while its northern terminus is in Kansas City, Missouri, at I-435 and I-470. Portions of the remaining roadway in Louisiana, Arkansas, and Texas, which will link Kansas City with New Orleans, are in various stages of planning or construction.
King's Highway 401, commonly referred to as Highway 401 and also known by its official name as the Macdonald–Cartier Freeway or colloquially referred to as the four-oh-one, is a controlled-access 400-series highway in the Canadian province of Ontario. It stretches 828 kilometres (514 mi) from Windsor in the west to the Ontario–Quebec border in the east. The part of Highway 401 that passes through Toronto is North America's busiest highway, and one of the widest. Together with Quebec Autoroute 20, it forms the road transportation backbone of the Quebec City–Windsor Corridor, along which over half of Canada's population resides. It is also a Core Route in the National Highway System of Canada. The route is maintained by the Ministry of Transportation of Ontario (MTO) and patrolled by the Ontario Provincial Police. The speed limit is 100 km/h (62 mph) throughout its length, with the only exceptions being the posted 80 km/h (50 mph) limit westbound in Windsor and in most construction zones, along with a 110 km/h (68 mph) speed limit between Windsor and Tilbury.
Interstate 215 (I-215) is a 54.5-mile-long (87.7 km) north–south auxiliary Interstate Highway in the Inland Empire region of the San Bernardino–Riverside urban area in Southern California. It has portions designated as the Barstow, Escondido, and Armed Forces Freeways. I-215 is a bypass auxiliary route of I-15, running from Murrieta to northern San Bernardino. While I-215 connects the city centers of both Riverside and San Bernardino, its parent I-15 runs to the west through Corona and Ontario.
A cloverleaf interchange is a two-level interchange in which all turns are handled by slip roads. To go left, vehicles first continue as one road passes over or under the other, then exit right onto a one-way three-fourths loop ramp (270°) and merge onto the intersecting road. The objective of a cloverleaf is to allow two highways to cross without the need for any traffic to be stopped by traffic lights. The limiting factor in the capacity of a cloverleaf interchange is traffic weaving.
King's Highway 7, commonly referred to as Highway 7 and historically as the Northern Highway, is a provincially maintained highway in the Canadian province of Ontario. At its peak, Highway 7 measured 716 km (445 mi) in length, stretching from Highway 40 east of Sarnia in Southwestern Ontario to Highway 17 west of Ottawa in Eastern Ontario. However, due in part to the construction of Highways 402 and 407, the province transferred the sections of Highway 7 west of London and through the Greater Toronto Area to county and regional jurisdiction. The highway is now 535.7 km (332.9 mi) long; the western segment begins at Highway 4 north of London and extends 154.1 km (95.8 mi) to Georgetown, while the eastern segment begins at Donald Cousens Parkway in Markham and extends 381.6 km (237.1 mi) to Highway 417 in Ottawa.
The Capital Beltway is a 64-mile (103 km) auxiliary Interstate Highway in the Washington metropolitan area that surrounds Washington, D.C., the capital of the United States, and its inner suburbs in adjacent Maryland and Virginia. It is the basis of the phrase "inside the Beltway", used when referring to issues dealing with US federal government and politics. The highway is signed as Interstate 495 (I-495) for its entire length, and its southern and eastern half runs concurrently with I-95.
Interstate 430 (I-430) is a 12.93-mile-long (20.81 km) Interstate highway in Pulaski County, Arkansas, that bypasses the cities of Little Rock and North Little Rock. I-430 begins at an interchange southwest of Downtown Little Rock with I-30, US 67, and US 70 and travels north to cross the Arkansas River and end at I-40 and US 65. The first plans for the freeway appeared in 1955.
Interstate 630 (I-630) in Arkansas is an east–west connector within Little Rock. It is also known as the Wilbur D. Mills Freeway and starts at I-30, U.S. Highway 65 (US 65), US 67, and US 167, traveling west through downtown Little Rock to I-430, Chenal Parkway, and Shackleford Road.
State Road 589 (SR 589), also known as the Veterans Expressway and Suncoast Parkway, is a controlled-access toll road near the Florida Gulf Coast. Maintained and operated by Florida's Turnpike Enterprise, this 68-mile (109 km) transportation corridor extends from State Road 60 in Tampa, north to State Road 44 near Lecanto. The Veterans Expressway was built to accommodate the increasing commuter traffic in the Tampa-St. Petersburg metropolitan area, with the Suncoast Parkway opening in 2001, extending from near the northern terminus of the Veterans Expressway to U.S. Route 98, with a possible northern extension to U.S. Route 19/U.S. Route 98 in Crystal River in Citrus County in the planning and development stages. As of February 28, 2022, Phase I of the extension is now open between US 98 and Florida State Road 44. Phase II, which would further extend the highway to County Road 486, is undergoing the design phase.
The Great Smoky Mountains Parkway is a highway that travels 23.4 miles (37.7 km) between the Great Smoky Mountains National Park and Interstate 40 (I-40) in Kodak, Tennessee, in East Tennessee. It serves as the main thoroughfare for Gatlinburg, Pigeon Forge, and Sevierville, and includes a 4.3-mile (6.9 km) spur of the Foothills Parkway. It is composed of sections of a number of numbered highways, including U.S. Route 441 (US 441) and US 321 and State Route 66 (SR 66) and SR 448.
Chenal Valley is a sizable and more recently developed section of Little Rock, Arkansas, located in the west-central part of the city and serves as a major economic and residential hub in west Little Rock. Its name is derived from the area's Shinall Mountain, but Deltic Timber Corporation, a major early developer of the area, opted to alter the name to mimic French language as part of a strategy to orient the residential and commercial development toward upper-class population segments.
Memorial Parkway, also known as the Parkway, is a major thoroughfare in Huntsville, Alabama that carries over 100,000 vehicles on average a day. It, in whole or in part, follows U.S. Route 231, U.S. Route 431, U.S. Route 72, and State Route 53 through the Huntsville city limits. It is a limited access road through most of Huntsville city proper, providing exits to the frontage road which allows access to road intersections, as well as businesses and residences along the route. Both the limited access and frontage roads are referred to as Memorial Parkway. Originally constructed to bypass downtown Huntsville and officially opened on December 1, 1955, the highway is the major commercial thoroughfare through Huntsville, a status it has held since the mid-1960s.
A two-lane expressway or two-lane freeway is an expressway or freeway with only one lane in each direction, and usually no median barrier. It may be built that way because of constraints, or may be intended for expansion once traffic volumes rise. The term super two is often used by roadgeeks for this type of road, but traffic engineers use that term for a high-quality surface road. Most of these roads are not tolled.
Interstate 64 (I-64) in the US state of Virginia runs east–west through the middle of the state from West Virginia to the Hampton Roads region, for a total of 299 miles (481 km). From the West Virginia state line to Chesapeake, it passes through the major cities of Lexington, Staunton, Charlottesville, the state capital of Richmond, Newport News, Hampton, and Norfolk. It is notable for crossing the mouth of the harbor of Hampton Roads on the Hampton Roads Bridge–Tunnel (HRBT), the first bridge–tunnel to incorporate artificial islands, concurrent with U.S. Route 60 (US 60). Also noteworthy is a section through Rockfish Gap, a wind gap in the Blue Ridge Mountains, which was equipped with an innovative system of airport-style runway lighting embedded into the pavement to aid motorists during periods of poor visibility due to fog or other conditions.
Interstate 55 (I-55) is part of the Interstate Highway System that runs from LaPlace, Louisiana, to Chicago, Illinois. In the state of Tennessee, the Interstate is located entirely within the state's second-largest city of Memphis, running 12.28 miles (19.76 km) from the Mississippi state line in the Whitehaven neighborhood to the Arkansas border across the Mississippi River. Of the six states that the Interstate passes through, the segment in Tennessee is the shortest, as well as the shortest mainline Interstate segment in Tennessee. I-55 serves a number of neighborhoods and industrial areas in the southwestern portion of Memphis, and also provides access to the Memphis International Airport, the second-busiest cargo airport in the world.
In the US state of Colorado, Interstate 25 (I-25) follows the north–south corridor through Colorado Springs and Denver. The highway enters the state from the north near Carr and exits the state near Starkville. The highway also runs through the cities of Fort Collins, Broomfield, Loveland, and Pueblo. The route is concurrent with U.S. Route 87 (US 87), which is unsigned, through the entire length of the state. I-25 replaced US 87 and most of US 85 for through traffic.
Randolph Road is a county highway in the U.S. state of Maryland. The highway is the major component of a mostly four- to six-lane 16.8-mile (27.0 km) highway spanning southern Montgomery County and northwestern Prince George's County that also includes Montrose Road, Josiah Henson Memorial Parkway, and Cherry Hill Road, and forms an important link between eastern Montgomery County and Rockville. Montrose Road begins at Maryland Route 189 in Potomac. The highway heads east through a junction with Interstate 270 (I-270) before the main course continues as Josiah Henson Memorial Parkway in North Bethesda. Josiah Henson Memorial Parkway continues through a junction with MD 355, east of which the highway becomes Randolph Road. Randolph Road intersects MD 586 and MD 185 in Wheaton, MD 97 in Glenmont, and MD 650 in Colesville. The highway continues southeast toward Fairland, where it meets U.S. Route 29. The highway continues from US 29 as Cherry Hill Road through an intersection with MD 212 in Calverton before reaching its eastern end at US 1 in College Park.
Sam Cooper Boulevard is an urban highway in Memphis, Tennessee, United States. The more recent western segment of the road follows a parkway design, while the older eastern portion, which was proposed and constructed as a segment of Interstate 40 (I-40), is built as a freeway, without at-grade intersections and traffic lights. The western terminus of Sam Cooper Boulevard is at East Parkway North. At the western termination point of the road there is a short concurrency of East Parkway North with U.S. Route 64 (US 64), US 70, and US 79. From its western end, Sam Cooper Boulevard continues east for 5.8 miles (9.3 km) to reach its eastern terminus at the I-40/I-240 interchange.
Little Rock, Arkansas is home to numerous neighborhoods. See List of Little Rock Neighborhoods for an exhaustive list.
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