U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000


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Highway History

Designating the Urban Interstates

U.S. Route 3 and 20 in Boston Mass.

The interstate highway system, when completed and improved, will include only about 1 percent of the Nation's roads and streets but will carry 20 percent of the total traffic.  Many sections os the system now are as congested as US Routes 3 and 20 in Boston, Mass., shown here
The interstate highway system, when completed and improved, will include only about 1 percent of the Nation's roads and streets but will carry 20 percent of the total traffic. Many sections os the system now are as congested as US Routes 3 and 20 in Boston, Mass., shown here.

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Updated: 10/09/2013
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000