ⓘ Lists of Interstate Highways by state ..

List of Interstate Highways in Alabama

The Interstate Highways in Alabama are the components of the Interstate Highway System in the U.S. state of Alabama. All numbered highways in Alabama are maintained by the Alabama Department of Transportation. Currently, there are 11 routes and 1.130 miles 1.820 km of Interstates in Alabama. The Interstate with the longest segment in Alabama is Interstate 65, covering 367.00 miles 590.63 km; the shortest is Interstate 359, covering 2.30 miles 3.70 km. There are six Interstate primary routes and five Interstate auxiliary routes serving the six largest cities in the state, and 22 of the 25 l ...

List of Interstate Highways in Alaska

The Interstate Highways in Alaska are all owned and maintained by the U.S. state of Alaska. The Alaska Department of Transportation & Public Facilities is responsible for the maintenance and operations of the Interstate Highways. The Interstate Highway System in Alaska comprises four highways that cover 1.082.22 miles. The longest of these is A-1, at 408.23 miles long, while the shortest route is A-3, at 148.12 miles long. All Interstates in Alaska are unsigned and are not generally referred to by their highway numbers. Interstates in Alaska follow the numbering system Interstate A-n, wher ...

List of Interstate Highways in Arizona

All state designated Interstate Business Loops are internally designated as State Route Business Loops by ADOT, being referred to throughout ADOT ArcGIS data and state highway logs as such. For example, all currently state designated I-10 Business Loops in Arizona are referred to as "SB010" which is the Arizona Transportation Information System ATIS code for "State Business Route 10" or "SR 10B" for short.

List of Interstate Highways in Arkansas

The list of Interstate Highways in Arkansas encompasses nine members of the Dwight D. Eisenhower National System of Interstate and Defense Highways in the state of Arkansas.

List of Interstate Highways in California

This is a list of Interstates in the U.S. state of California that have existed since the 1964 renumbering. It includes routes that were defined by the California State Legislature but never built, as well as routes that have been entirely relinquished to local governments. Each state highway in California is maintained by the California Department of Transportation Caltrans and is assigned a Route officially State Highway Route number in the Streets and Highways Code Sections 300-635. Under the code, the state assigns a unique Route X to each highway, and does not differentiate between st ...

List of Interstate Highways in Connecticut

Interstate Highways in the U.S. state of Connecticut run a total of 446.33 miles. Connecticut has three primary highways and five auxiliary highways. Most of the highways are maintained by the Connecticut Department of Transportation, with the exception of Interstate 684, which is maintained by the New York State DOT. In 1957, Connecticut received approval for the routes of its three primary Interstate highways: I-84, I-91, and I-95. This plan was extended in 1959 to include I-291 and I-491. The first Interstate Highway signs were installed on a completed section of I-91 north of Hartford ...

                                     

ⓘ Lists of Interstate Highways by state

  • The Interstate Highways in Georgia comprise seven current primary Interstate Highways and eight auxiliary Interstates In addition, two primary Interstates
  • partially in the U.S. state of Pennsylvania. In Pennsylvania, most of the Interstate highways are maintained by the Pennsylvania Department of Transportation
  • The Interstate Highways in Washington is a group of seven designated Interstate Highways within the state of Washington in the Pacific Northwest region
  • list of Interstate Highways in Arkansas encompasses nine members of the Dwight D. Eisenhower National System of Interstate and Defense Highways in the
  • of Interstate Highways in Maryland. There are currently 16 Interstate Highways that exist entirely or partially in the U.S. state of Maryland. Six of
  • Interstate Highways in Iowa form a network of freeways that cross the state Primary Interstates I - 29 crossing over the mouth of the Floyd River I - 35 approaching
  • The Interstate Highways in the U.S. state of West Virginia are owned and maintained by the West Virginia Division of Highways There are 6 primary interstates
  • the state assigns a unique Route X to each highway and does not differentiate between state US, or Interstate highways Lengths for each state route
  • auxiliary highways Most of the highways are maintained by the Connecticut Department of Transportation, with the exception of Interstate 684, which
  • The Interstate Highways in Alabama are the components of the Interstate Highway System in the U.S. state of Alabama. All numbered highways in Alabama are