Post-Extreme Event Damage Assessment and Response for Highway Bridges (2016) / Chapter Skim
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Pages 79-90
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From page 79... ...
79 As part of the surveys, the state engineers have shared their experiences from extreme events that resulted in emergency response actions. These experiences together with the information on emergency response planning from chapter four will provide a solid implementation procedure for the developed emergency plans.
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80 postpone permanent repairs until a full bridge maintenance crew was available. The district was advised to epoxy paint the prestressed strands within a week to prevent rust forming on any additional strands.
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81 montana Department of transportation (mDt) and Ice Impact Failure of bridge over Fish Creek: On March 6, 2014, the collapse of the bridge over fish creek in Montana was caused by the complete failure of Bent 3 timber pile resulting from ice impact (Figure A3-6)
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82 FIGURE A3-6 (left) Ice hitting the bridge; and (right )
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83 3. In addition to replacing the collapsed span, the WSDOT worked with contractors to upgrade the remaining spans of the I-5 Skagit River Bridge.
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84 At the point of impact (POI) of Girder A, the lateral translation of the girder, or girder sweep, was estimated to be 1 foot 9 in.
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85 operations division, the public information officer, and area managers, gathered at the regional headquarters in Fairbanks. The group began the process of assessing the damage and reporting what they knew to Alaska state troopers, the media, and the public.
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86 insufficient confinement and poor anchorage and splice details.) • Footing failures resulting from excessive flexural or shear demands.
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87 side inspectors determined the ground line had scoured/degraded 14 feet in less than 24 hours. This information was relayed to the hydraulic section for stability analysis.
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88 used in-house staff to place wire baskets of rock around the end of the bridge to prevent the road from washing out. The bridge and road were closed for several weeks.
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89 specifications staff developed the proposals for release to the contractors is an accelerated time frame. There were four major phases conducted by LA DOTD to repair the bridges: in the first Phase, the damaged spans were shifted from westbound to eastbound to fill in for the missing spans using Self Propelled Modular Transporters (SPMT)
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From page 90... ...
90 FIGURE A3-22 I-65 northbound detour. FIGURE A3-23 (left)
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