U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000
Data available in Excel format
By the late 1980s, the U.S. highway network was near completion. Now, virtually all population centers are linked by paved roadways. The total number of lane-miles has been increasing as highways are widened with additional lanes to carry more vehicles; on the whole, capacity has been added to existing highways rather than building new ones.
Note: In 1997, forest development roads ceased being treated as public roads. This is why Figure 1-5 (above) indicates significant drops in both centerline and lane mileage in 1998.
Data Source: US Department of Transportation, Federal Highway Administration, Office of Highway Policy Information, Highway Statistics.
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