United States Department of Transportation
i
Identification and evaluation of pavement-bridge interface ride quality improvement and corrective strategies : executive summary report.
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2011-01-01
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[PDF-301.41 KB]
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Edition:Executive summary report.
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Abstract:Bridge owners have long recognized that the approach pavement at bridges is prone to exhibiting both
settlement and cracking, which manifest as the “bump at the end of the bridge.” This deterioration
requires considerable on-going maintenance expenditures, added risk to maintenance workers, increased
distraction to drivers, reduced steering control, increased damage to vehicles, a negative public perception
of the highway system, and a shortened useful bridge life. This problem has recently begun to receive
significant national attention as bridge owners have increased the priority of dealing with the recurring
problem.
No single factor, in and of itself (individually), leads to significant problems. Rather, it is an interaction
between multiple factors that typically leads to problematic conditions. As such, solutions require
interdisciplinary thinking and implementation. The bridge-abutment interface is a highly complex region
and an effective “bump at the end of the bridge” solution must address the structural, geotechnical,
hydraulic, and construction engineering disciplines. Various design alternatives, construction practices,
and maintenance methods exist to minimize bridge approach settlement, but each has its own drawbacks,
such as cost, limited effectiveness, or inconvenience to the public.
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