With no weight, the girder on the SR 99 Duwamish River Bridge rebounds to its regular position, leaving a gap into which a pen fits. Our crews installed metal shims, or pieces of metal, to fill that gap until permanent repairs can be made in early 2021.

Tags:   SR 99 Duwamish River Bridge Duwamish River bearings bridge First Avenue South bridge Seattle West Seattle SeaTac Burien repair girder

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With the weight of a truck on top of the joint, the girder is pressed down onto a deteriorating bearing pad; when the truck moves the girder rises slightly. In the long term, this can cause further damage to the bridge, so in fall 2020 we installed pieces of metal into the gap to stop the movement.

Tags:   SR 99 Duwamish River Bridge Duwamish River bearings bridge First Avenue South bridge Seattle West Seattle SeaTac Burien repair girder

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The wear on the bearing pads on the southbound SR 99 Duwamish River Bridge, also known as the First Avenue South bridge, is quite visible. In early 2021, contractor crews will replace the bearing pads and make other repairs on the bridge.

Tags:   SR 99 Duwamish River Bridge Duwamish River bearings bridge First Avenue South bridge Seattle West Seattle SeaTac Burien repair girder

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You can see the bridge move up and down slightly when the weight of vehicles go over the end of the girder, where bearing pads have worn. As a temporary fix during fall 2020, we installed shims, or pieces or metal, to stop the bridge movement. In early 2021 we will hire a contractor to perform permanent repairs.

Tags:   SR 99 Duwamish River Bridge Duwamish River bearings bridge First Avenue South bridge Seattle West Seattle SeaTac Burien repair girder

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