The National Highway Planning Network

The National Highway Planning Network (NHPN) is a 1:100,000 scale network database that contains line features representing just over 450,000 miles of current and planned highways in the U.S. The NHPN consists of interstates, principal arterials, and rural minor arterials.

Metadata for NHPN (TXT, HTML) - metadata for NHPN version 2005.08 (signifies release date: year-2005, month-August)

The NHPN v2005.08 is now available for all 50 States, the District of Columbia and Puerto Rico. These files are in zipped Shapefile format.

Whole U.S. (44 MB)

Alabama (1.1 MB)
Alaska (330 KB)
Arizona (533 KB)
Arkansas (920 KB)
California (3.1 MB)
Colorado (841 KB)
Connecticut (412 KB)
Delaware (104 KB)
District of Columbia (39 KB)
Florida (1.3 MB)
Georgia (1.9 MB)
Hawaii (134 KB)
Idaho (487 KB)

Illinois (1.2 MB)
Indiana (664 KB)
Iowa (669 KB)
Kansas (621 KB)
Kentucky (1.1 MB)
Louisiana (816 KB)
Maine (518 KB)
Maryland (546 KB)
Massachusetts (855 KB)
Michigan (1.2 MB)
Minnesota (941 KB)
Mississippi (774 KB)
Missouri (1.0 MB)

Montana (564 KB)
Nebraska (511 KB)
Nevada (409 KB)
New Hampshire (270 KB)
New Jersey (536 KB)
New Mexico (727 KB)
New York (2.3 MB)
North Carolina (1.5 MB)
North Dakota (350 KB)
Ohio (927 KB)
Oklahoma (703 KB)
Oregon (960 KB)
Pennsylvania (1.9 MB)

Puerto Rico (951 KB)
Rhode Island (172 KB)
South Carolina (762 MB)
South Dakota (345 KB)
Tennessee (801 KB)
Texas (3.4 MB)
Utah (388 KB)
Vermont (297 KB)
Virginia (881 KB)
Washington (747 KB)
West Virginia (661 KB)
Wisconsin (1.1 MB)
Wyoming (560 KB)

Contact

Mark Sarmiento, mark.sarmiento@fhwa.dot.gov, 202-366-4828