Alliance for Pioneer Square

Visit WSDOT’s website for a complete list of closures. Closure information changes frequently, so remember to check for updates throughout the week.

Highlights for Monday, June 25 – Sunday, July 1

Corridor-wide:

• The southbound SR 99 Alaskan Way Viaduct will close between the north end of the Battery Street Tunnel and the West Seattle Bridge from 9 p.m. to 5 a.m. nightly, Tuesday through Thursday for viaduct reinforcement work.
• The southbound SR 99 Alaskan Way Viaduct will close between the north end of the Battery Street Tunnel and the West Seattle Bridge from 11 p.m. Friday until 9 a.m. Sunday.

North end:

• Sixth Avenue North will close between Thomas Street and Harrison Street from 7 a.m. to 5 p.m. Monday through Friday for utility work. Local access will be maintained via Harrison Street.
• Southbound SR 99 will be reduced to one lane between Roy and John streets from 7 p.m. Monday until 5 a.m. Tuesday.
• The southbound SR 99 exit to Denny Way will close from 7 p.m. Monday until 5 a.m. Tuesday.
• Beginning Tuesday, June 26 at 5 a.m., the right lane of southbound SR 99 will close around the clock between Republican and John streets for utility work. Access to and from southbound SR 99 will be closed from Republican, Harrison, Thomas and John streets.

Central waterfront:

• The lanes adjacent to bus stop islands will close on Alaskan Way and in the ferry holding area between Madison and Columbia streets from 7 a.m. to 5 p.m. Monday through Friday while crews install hand-rails at the bus stops.

South end:

• East Marginal Way South will close between South Atlantic and South Hanford streets from 7 p.m. to 5 a.m. nightly Thursday and Friday while crews pour concrete on the new northbound SR 99 bridge deck over South Atlantic Street. Local access will be maintained.
• South Atlantic Street will be closed west of Colorado Avenue South from 7 p.m. to 5 a.m. nightly Thursday and Friday.

Quick links:

• Current Work: The most up-to-date resource for construction related to the Alaskan Way Viaduct replacement.
• Traffic: Real-time conditions on Seattle area highways and many connecting streets.
• Transit: WSDOT funded additional bus service along routes affected by construction.
• Bike/walk: We maintain a safe and reliable path for bicyclists and pedestrians through the construction area.

 

Website links

Alaskan Way Viaduct Replacement Program

SR 99 Tunnel Project | South Holgate Street to South King Street Project

 

Visit WSDOT’s website for a complete list of closures. Closure information changes frequently, so remember to check for updates throughout the week.

Highlights for Monday, June 11 – Monday, June 18

Corridor-wide closures:

• The southbound SR 99 Alaskan Way Viaduct will close between the north end of the Battery Street Tunnel and the West Seattle Bridge from 9 p.m. to 5 a.m. Monday through Thursday. The on-ramps from Elliott Avenue and Columbia Street to southbound SR 99 also will close from 9 p.m. to 5 a.m.
• Both directions of the SR 99 Alaskan Way Viaduct and all on- and off-ramps will close between the West Seattle Bridge and the north end of the Battery Street Tunnel from 11 p.m. Friday, June 15 to 5 a.m. Monday, June 18.
• These closures are necessary while crews reinforce a two-block section of the viaduct located above the route of the future SR 99 tunnel.

North end:

• Flaggers will alternate traffic on Thomas Street between Sixth Avenue North and SR 99 from 7 a.m. to 5 p.m. Monday through Friday for utility work.
• Sixth Avenue North will close between John Street and Thomas Street from 7 a.m. to 7 p.m. Monday through Wednesday for utility work. Local access will be maintained via Thomas Street.
• Sixth Avenue North will close between Thomas Street and Harrison Street from 7 a.m. to 5 p.m. Thursday and Friday for utility work. Local access will be maintained via Harrison Street.
• John Street will close between Sixth Avenue North and SR 99 from 7 a.m. to 7 p.m. Thursday and Friday for utility work. Alley access will be maintained. Local access will be maintained via Sixth Avenue North.

Central waterfront:

• Flaggers will alternate traffic in the intersection of Yesler Way and the road under the viaduct from 9 p.m. to 5 a.m. Monday through Thursday.

South end:

• East Marginal Way South will close from South Atlantic to South Hanford streets from 7 p.m. to 5 a.m. Monday through Friday while crews set girders for the new northbound SR 99 bridge over South Atlantic Street. Local access will be maintained.
• South Atlantic Street will be closed west of Colorado Avenue South from 7 p.m. to 5 a.m. Monday through Friday.

Quick links:

• Current Work: The most up-to-date resource for construction related to the Alaskan Way Viaduct replacement.
• Traffic: Real-time conditions on Seattle area highways and many connecting streets.
• Transit: WSDOT funded additional bus service along routes affected by construction.
• Bike/walk: We maintain a safe and reliable path for bicyclists and pedestrians through the construction area.

Website links

Alaskan Way Viaduct Replacement Program

SR 99 Tunnel Project | South Holgate Street to South King Street Project

 

Stadium traffic on Saturday

Traffic is expected to be particularly ugly on Saturday in the SODO area when the U of W holds its graduation ceremonies at CenturyLink Field with gates opening at 12 noon and the ceremonies wrapping up around 4:30 p.m., or later, and the Seattle Mariners taking on the LA Dodgers next door at Safeco Field starting at 4:15 p.m.  Parking has been reserved for the use of Mariners baseball fans only at four nearby garages; advise from the Mariners’ headquarters is that Saturday’s game attendees pre-purchase their parking on-line.

Westbound Spokane Street Viaduct Closure This Weekend

Also, revised nighttime closures next week

 The westbound lanes of the Spokane St Viaduct between I-5 and SR 99 will be closed this weekend from 6 p.m. Saturday, June 9 until 5 a.m. Monday, June 11.  The SR 99 southbound off-ramp to West Seattle will remain open, providing an opportunity to avoid the closure.  Please see  maps providing additional detour opportunities:

Map routes to West Seattle from north during the closure

Map routes to West Seattle from south during the closure

 Note: The eastbound Spokane St Viaduct off-ramp at 1^st Ave S remains closed, but is projected to reopen the morning of Tuesday, June 19.

The updated construction related travel lane closures and/or shifts for the coming week are outlined below, although some dates could slip depending on weather conditions.

Wednesday, June 13 – Thursday, June 14

• Eastbound lanes of the Spokane St Viaduct closed at SR 99, with all traffic diverted to northbound SR 99.  All other eastbound traffic should consider using the low level Spokane Swing Bridge.  The closure will run from 10 p.m. both nights until 5 a.m. the following morning.

• The left westbound travel lane of the Spokane St Viaduct between I-5 and SR 99 will be closed from 10 p.m. both nights until 5 a.m. the following morning.  Traffic will be maintained in the remaining westbound lane.

Sunday, June 17 – Tuesday, June 19

• Southbound traffic on E Marginal Way at S Spokane St will be detoured to the west for three nights from 9 p.m. until 5 a.m. the following morning.

Monday, June 18

• The westbound lanes of the Spokane St Viaduct from I-5 to SR 99 will be closed from 10 p.m. Monday until 5 a.m. on Tuesday morning, June 19.  The SR 99 southbound off-ramp to West Seattle will remain open, providing an opportunity to avoid the closure.

• The left eastbound travel lane of the Spokane St Viaduct from SR 99 to I-5 will be closed from 10 p.m. Monday until 5 a.m. on Tuesday morning, June 19.  Traffic will be maintained in the remaining eastbound lane.