Survey of the Interstate Resurfacing, Restoration, and Rehabilitation Program

Gao ID: 120243 October 31, 1979

The Interstate Resurfacing, Restoration, and Rehabilitation Program provides states with federal funding to help preserve their existing interstate highways. A GAO survey of the program found two operational matters which may need attention.

Federal Highway Administration (FHwA) guidelines encourage states to use open-graded asphalt friction courses to improve the skid resistance of their highway surfaces. However, discussions with field officials indicated that differences of opinion exist as to whether these courses should be funded with program funds or regular interstate funds. These varying opinions could result in inequities to the states because of different federal participation rates. The program has been used for putting down overlays to improve the strength, rideability, and safety of the interstate highways. The guidelines for determining overlay thickness and length of endurance are general and did not ensure that such overlays were cost effective.

Recommendations

Our recommendations from this work are listed below with a Contact for more information. Status will change from "In process" to "Open," "Closed - implemented," or "Closed - not implemented" based on our follow up work.

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