Capital Improvement & Infrastructure

Cost Effective Bridge Replacement through Substructure and Foundation Reuse In Reserve

With the average age of New Jersey bridges exceeding 50 years, cost effective and efficient bridge replacement strategies are becoming paramount. Although accelerated bridge construction (ABC) practices are now gaining interest in many locations around the country, the truth is that due to high population and infrastructure density, states like New Jersey have been implementing ABC practices (without the acronym) for decades. Despite all of the ABC research, the replacement of foundations and substructures remains a stubborn bottleneck, and often demands the lion’s share of time and resources. In an attempt to remove this bottleneck, the proposed project aims to develop strategies to assess substructures and foundations to identify which ones may be good candidates for reuse. The benefits of such a strategy are clear: a reduction in the impact statements and permitting requirements, reduced complexity of staging and/or realignment, and a drastic reduction in construction time/cost. Further, given the relatively low stresses these elements are exposed to, and their more protected operating environment, there is reason to believe (as well as empirical evidence) that such components have longer service lives than their superstructure counterparts. However, to take advantage of this extended service life, accurate assessment approaches are needed to clearly identify which ones are good candidates for reuse. The goal of this proposed project would be to develop and validate such approaches, which may include an integration of simulation modeling, sensing, and nondestructive evaluation (NDE) techniques.

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Archive: 2017 Ideas
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Archive: 2017 Ideas
Idea No. 36