Serb guardrail in-service evaluation : S. Ashland to California State Line, F.A.P. IR-5-1(113)00, Jackson County : experimental features construction-report.
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1990-03-01
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Alternative Title:Serb guardrail in-service evaluation OR 88-02, S. Ashland to California State Line, F.A.P. IR-5-1(113)00, Jackson County.
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Abstract:This report covers the installation of two Self-Restoring Barrier (SERB) guardrails on Interstate-5 south of Ashland Oregon. The SERB design was developed to reduce repair cost and increase safety when compared to conventional barriers. This is accomplished by a design that allows the rail to deflect up and back on impact. This allows the vehicle to be redirected smoothly and minimizes rail damage. The installations were performed by contract and all work was inspected by Oregon Department of Transportation personnel. The contractor did not have any major problems with the installation but found the SERB rail to be heavy and cumbersome to work with. Ongoing evaluation will determine the cost-effectiveness and safety of the design. Part of the cost issue is concerned with the ease and cost of repair. As a preliminary evaluation, it appears that the internal splice design will make the rail difficult to repair. The manufacturer (SYRO Steel) recommends that future installations use a "lap-splice" design to improve the SERB's repairability.
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