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Our Nation's Highways: 2008

Figure 1-4. National Truck Network

The Surface Transportation Assistance Act of 1982 authorized the establishment of a national network of highways designated for use by large trucks. On these highways, Federal width and length limits apply. The National Network (NN) includes almost all of the Interstate Highway System and other, specified non-Interstate highways. The network comprises more than 200,000 miles of highways.

See paragraph above for explanation of Figure 1-4

Data Source: Data Source: U.S. Department of Transportation, Federal Highway Administration. Note: Figure 1-4 is for illustrative purposes only. It shall not be interpreted as the official National Network nor shall it be used for truck size and weight enforcement purposes.

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Tianjia Tang
Office of Highway Policy Information
202-366-2236
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United States Department of Transportation - Federal Highway Administration