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The following list includes projects to build new highways or improve existing ones, including roadways, bridges, and tunnels. It includes only projects that are underway or completed. Additionally, projects with multiple independent segments (e.g., I-69 Indiana-Texas Extension , Trans-Texas Corridor ) are not included, though individual ...
The construction of the Interstate Highway System cost approximately $114 billion (equivalent to $618 billion in 2023). The system has continued to expand and grow as additional federal funding has provided for new routes to be added, and many future Interstate Highways are currently either being planned or under construction.
Categories of Interstate Highways sorted by U.S. state Wikimedia Commons has media related to Interstate Highways by state . In these subcategories, the Interstate highways are listed in numerical order, based on the last two digits.
This is reflective of a national trend in escalating highway construction costs. According to national data, across the nation, project costs have gone up by two-thirds in just over three years.”
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 ...
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.
The Federal-Aid Highway Act of 1952 authorized $550 million for the Interstate Highway System on a 50–50 matching basis, meaning the federal government paid 50% of the cost of building and maintaining the interstate while each individual state paid the balance for interstate roads within their borders.
The weekend of Oct. 14 and 15 saw the last stages of paving, and this past weekend, construction for overhead signs forced the closing of the Route 46 eastbound ramp to Notch Road. Work there was ...