Bridge deck repairs are set to start on the SR 99 Duwamish River / 1st Ave South Bridge on July 19 which means the bridge will close for brief periods. That's going be yet another pain point for drivers trying to get out of West Seattle. There are alternatives of course but with the high rise bridge closed it means detours are necessary.
It will help that the Spokane Street low bridge is open to all traffic after 9pm when the 1st Ave South Bridge work is taking place.
The replacement work will take place Sunday through Thursdays from 10 pm-5 am with a fourteen day work schedule planned.
Fourteen of the metal grid panels (hence the number of work nights) that make up the bridge deck of the northbound lanes of the bridge must be replaced The highway is a critical route between cities like Burien, Normandy Park and SeaTac, and Sea-Tac Airport to downtown Seattle. It carries about 62,000 vehicles each day.