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CityLink Seattle

Spokane Street Viaduct Construction Traffic Changes, Aug 3-17

The following traffic changes will occur during the next two weeks for work on the Spokane Street Viaduct Widening Project:

The eastbound travel lanes on the Spokane Street Viaduct will be closed at First Avenue South overnight on Friday, August 3, from 10 p.m. until 5 a.m. on Saturday morning.  During the closure, all eastbound traffic will exit at the First Avenue South off-ramp.  Motorists wishing to access the I-5 or Columbian Way on-ramps can continue eastbound on surface S Spokane Street to Sixth Avenue S, where they can connect to the ramps.

Staring Monday, August 6, First Avenue S between S Horton and S Spokane Streets will be reduced to one lane in each direction 24/7 for approximately eight weeks.

The westbound travel lanes of the Spokane Street Viaduct between I-5 and SR 99 will be closed for two nights next week, Monday, August 6, and Tuesday, August 7.  The closures will begin both nights at 10 p.m. and run until 5 a.m. the following morning. Click the links below for detour maps:

Map routes to West Seattle from north during the closure
Map routes to West Seattle from south during the closure

The eastbound travel lanes of the Spokane Street Viaduct will be closed Wednesday and Thursday nights, August 15 and 16, from 10 p.m. until 5 a.m. the following mornings.  All traffic on the West Seattle Bridge will be diverted to northbound SR99.

The Harbor Island on-ramp to the eastbound travel lanes of the Spokane Street Viaduct will reopen at 5 a.m. on Friday, August 17.