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Roadway Data

Information about Minnesota's roads from the Transportation Information System database

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National Highway System (NHS)

Information and updates concerning our nation's vital roads


The National Highway System (NHS) consists of roadways important to the nation's economy, defense, and mobility, and was developed by the Department of Transportation (DOT) in cooperation with the states, local officials, and metropolitan planning organizations (MPOs). The NHS includes the following subsystems of roadways (a specific highway route may be on more than one subsystem):



NHS and MAP-21


Moving Ahead for Progress in the 21st Century (MAP-21) has elevated the priority of the NHS system by increasing the share of federal aid dollars targeted to the system and by requiring regular reporting of performance for the condition and the function of this system. MAP-21 authorizes funding for five formula programs, the largest of which is the National Highway Performance Program (NHPP). The goals of the NHPP are:

    1. provide support for the condition and performance of the National Highway System (NHS)
    2. provide support for the construction of new facilities on the NHS
    3. ensure that investments of federal-aid funds in highway construction are directed to support progress toward the achievement of performance targets established in a state's asset management plan for the NHS


Changes to the NHS in Minnesota


MnDOT must submit any proposed NHS changes to the FHWA for approval. For state owned roads this process is initiated by the district engineer, for non-state owned roads this is initiated by the District State Aid Engineer (DSAE).