01626644

Component

Research in climate change trends has shown with certainty a future increase in the frequency and duration of extreme precipitation events across the U.S. with the Midwest and the Northeast projected to experience the largest increase. These changes could result in higher flow depth and flow speed. With respect to scouring of the foundation the higher flow speed and frequency of its occurrence would result in an increased likelihood of damage due to the bridge. With the understanding of increased risk to the bridges due to scour, transportation agencies are developing strategies to adapt the transportation infrastructure to the ever changing climate. This study benefits from a previously conducted pilot climate change study in the state of Iowa and applies the proposed procedure on the US 30 bridge over South Skunk River in Iowa as a case study. The paper presents five different countermeasures to reduce the risk of failure of the bridge due to increased scour and compares the cost to benefit ratio of each method.

This paper was sponsored by TRB committee A0020T Special Task Force on Climate Change and Energy.

01618707

17-04559

English

15p

2017

Transportation Research Board 96th Annual Meeting

Digital/other

Figures; Maps; Photos; References; Tables

Benefit cost analysis; Case studies; Climate change; Coast and river protective works; Countermeasures; Failure; Flood damage; Highway bridges; Scour

Iowa

Bridges and other structures; Environment; Highways; Maintenance and Preservation

Transportation Research Board Annual Meeting 2017 Paper #17-04559

TRIS, TRB, ATRI

Dec 8 2016 11:44AM