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As of 2022, about one quarter of all vehicle miles driven in the country used the Interstate Highway System, [6] which has a total length of 48,890 miles (78,680 km). [2] In 2022 and 2023, the number of fatalities on the Interstate Highway System amounted to more than 5,000 people annually, with nearly 5,600 fatalities in 2022.
In the United States, future Interstate Highways include proposals to establish new mainline (one- and two-digit) routes to the Interstate Highway System.Included in this article are auxiliary Interstate Highways (designated by three-digit numbers) in varying stages of planning and construction, and the planned expansion of existing primary Interstate Highways.
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, even-numbered Interstates run east–west, with lower ...
On March 15, 2022, the 2022 Consolidated Appropriations Act was signed by President Joe Biden that added the extension of I-27 north to Raton, New Mexico, and south to Laredo to the Interstate Highway System. [9] A bill introduced in March 2023 would explicitly designate the extension as I-27 with two auxiliary routes numbered I-227 and I-327. [10]
This is a list of countries (or regions) by total road network size, both paved and unpaved.Also included is additional data on road network density and the length of each country or region's controlled-access highway network (also known as a motorway, expressway, freeway, etc.), designed for high vehicular traffic.
There are gaps in the Interstate Highway System where the roadway carrying an Interstate shield does not conform to the standards set by the Federal Highway Administration (FHWA), the body that sets the regulations for the Interstate Highway System. For the most part, the Interstate Highway System in the United States is a connected system ...
The National Highway System Designation Act of 1995 (Pub. L. 104–59 (text), 109 Stat. 568, COMPS-1425) is a United States Act of Congress that was signed into law by President Bill Clinton on November 28, 1995. The legislation designated about 160,955 miles (259,032 km) of roads, including the Interstate Highway System, as the NHS.
On March 15, 2022, the 2022 Consolidated Appropriations Act was signed by President Joe Biden that added the extension of I-27 north to Raton, New Mexico, and south to Laredo to the Interstate Highway System. [47] A bill introduced in March 2023 would explicitly designate the extension as I-27 with two auxiliary routes numbered I-227 and I-327 ...