Shoulder Rumble Strips at Narrow Bridgesby Jerry W. Emerson, Federal Highway, Administration/Kuwait, Washington, DC, USA,
Leonard B. West, Jr., Federal Highway, Administration/Kuwait, Washington, DC, USA,
Abstract: The highways in the United States have thousands of minimum design narrow bridges. Replacement of these bridges with current state of the art designs is not cost effective nor feasible in the forseeable future. An interim countermeasure, shoulder rumble strips, has been installed at several hundred bridge approaches on the Oklahoma Turnpikes. Accident data from the before and after period was analyzed using detailed traffic and injury rates of 50 percent and a benefit cost analysis showed a cost effectiveness range from 29:1 to 154:1. It was concluded shoulder rumble strips are an effective countermeasure that should be placed on approaches to narrow bridges.
Subject Headings: Highway bridges | Traffic accidents | Highway and road shoulders | Bridges | Bridge design | Traffic analysis | Highways and roads | North America | United States | Oklahoma
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