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MPC
Project Details

Title:Mitigation of Differential Settlement at Highway Bridge Approaches
Principal Investigators:Steven F. Bartlett
University:University of Utah
Status:Active
Year:2019
Project #:MPC-586
RiP #:01691231
Keywords:bridge approaches, geotechnical engineering, highway bridges, safety, settlement (structures), state departments of transportation
 

Abstract

Differential settlement in the transition zone between the bridge structure and the approach embankment often creates a "bump" which is a potential safety hazard and comfort issue for drivers. Studies conducted by DOTs around the country suggest that about 25 percent of the 600,000 bridges in the US are affected by bridge approach settlement, or the "bump at the end of the bridge." The settlements can result in unsafe driving conditions, rider discomfort, structural deterioration of bridges and long-term maintenance costs. Identifying additional geotechnical or structural means to mitigate this issue, which may or may not be employed in conjunction with preloading, is of benefit to many State DOTs. These benefits might be achieved by providing the project team with advantages and detriments of supplemental options in terms of their efficacy, cost, schedule and ease-of-construction. This research focuses on identifying innovative means to mitigate this issue during design and construction, whether through initial cost savings or by providing superior long-term performance, will provide value. This might be gained either through savings from initial capital investment or through life-cycle cost reductions, hence assisting in the preservation of key infrastructure.

NDSU Dept 2880P.O. Box 6050Fargo, ND 58108-6050
(701)231-7767info@ugpti.org