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What economic criteria, in terms of rehabilitation cost and/or life expectancy for a rehabilitated bridge, are states using to analyze and compare rehabilitation and replacement options? One example is found in INDOT’s Treatment of Historic Bridge on Low-Volume Local Road (Indiana Design Manual...
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Track federal and state funding for replacement, repair, rehab, and bridge maintenance. No one seems to be tracking the flow of money into each of these areas. The FHWA has said that they do not distinguish, nor do they require reporting from the states, about the proportion of funding is used for replacement...
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I tend to agree that 'purists' represent one end of the spectrum and that their adherence to fixed ideology can hinder a project. One example is the Texas SHPO wanting to preserve a guardrail made of gas pipe fittings that was 85% destroyed by corrosion. But the other end of the spectrum is occupied...