United States Department of Transportation
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Bridge Rail to Contain and Redirect 80,000 LB Tank Trucks
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1984-01-01
[PDF-2.12 MB]
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Edition:Final Report: Mar. 1983 - Dec. 1983
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Abstract:A standard Texas type T5 traffic rail was modified to increase its height and strength to contain and redirect an 80,000 1 b (36,300 kg) tank-type tractor trailer at 50 mph (80.5 km/h), 150 impacts. The concrete parapet was increased to 48 in. (122 cm) high, and a concrete beam was mounted on concrete posts on top of the parapet to achieve a total rail height of 90 in. (229 cm). One crash test was conducted on the bridge rail. The truck was contained and smoothly redirected. This test has shown that a bridge rail can redirect heavy tank-type trucks at speeds up to 50 mph (80.5 km/h) and 150 impacts. The cost of this rail is estimated at about $125 per foot. Typical passenger car bridge rails in Texas now cost about $35 per foot.
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