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Interstate Highways financed with federal funds are known as "chargeable" Interstate routes, and are considered part of the 42,000-mile (68,000 km) network of highways. Federal laws also allow "non-chargeable" Interstate routes, highways funded similarly to state and US Highways to be signed as Interstates, if they both meet the Interstate ...
It was previously a part of California State Route 238 that was built to Interstate standards, and it was added to the Interstate system using the same number it had as a state highway. It was upgraded to be an auxiliary route of I-80, but no three-digit combinations were available at the time the route was designated an interstate ...
The Long Beach Freeway was approved as a non-chargeable Interstate in September 1983 by the FHWA, and on May 30, 1984, AASHTO approved the SR 7 designations to be renumbered to Interstate 710. In October 1984, the FHWA approved an additional 1.6-mile (2.6 km) extension from CA 1 to Ocean Boulevard. [ 16 ]
The Federal Highway Administration approved the continuous roadway via SR 117 and SR 125 from I-5 to the border at Otay Mesa as a non-chargeable (not eligible for federal Interstate Highway construction dollars) part of the Interstate Highway System in October 1984. [36] The Otay Mesa border crossing opened on January 24, 1985. [37]
There are 71 primary Interstate Highways in the Interstate Highway System, a network of freeways in the United States. These primary highways are assigned one- or two-digit route numbers, whereas their associated auxiliary Interstate Highways receive three-digit route numbers. Typically, odd-numbered Interstates run south–north, with lower ...
The Interstate Highway System and its numbering as approved June 27, 1958; several of these numbers were modified by 1960. This is a list of highways, mostly U.S. Routes, bypassed by Interstate Highways.
Route 238, consisting of State Route 238 (SR 238) and Interstate 238 (I-238), is a mostly north–south state and auxiliary Interstate highway in the San Francisco Bay Area of California. The southern segment is signed as SR 238 and is a divided multilane surface highway that runs parallel to the Hayward hills between I-680 in Fremont and I-580 ...
The Interstate Highway System of the United States, in addition to being a network of freeways, also includes a number of business routes assigned by the American Association of State Highway and Transportation Officials (AASHTO). These routes connect a central or commercial district of a city or town with an Interstate bypass.