Interstate Access Policy

The Interstate System is a critical element of the surface transportation system, providing a network of limited access freeways which facilitate the distribution of virtually all goods and services across the United States. The Interstate System also influences the mobility and safety of people and goods by providing access to local highway and networks of public streets. As a result, it is in the national interest to preserve and enhance the Interstate System to meet the needs of the surface transportation system of the United States for the 21st Century.

The FHWA's Policy on Access to the Interstate System provides the requirements for the justification and documentation necessary to substantiate any proposed changes in access to the Interstate System. This policy also facilitates decision-making regarding proposed changes in access to the Interstate System in a manner that considers and is consistent with the vision, goals, and long-range transportation plans of a metropolitan area, region, and State. All new or modified points of access must be approved by FHWA and developed in accordance with federal laws and regulations (as specified in 23 U.S.C. 109 and 111, 23 C.F.R. 625.4, and 49 C.F.R. 1.48(b)(1)). The complete text of this policy and the previous policy may be viewed at the following links:

• Current Policy on Access to the Interstate System (8-18-09)
• Previous Policy on Access to the Interstate System (2-4-98)