Last updated: 1:04 p.m., Thursday, May 24, 2012 

This webpage contains information about WSDOT construction projects affecting vehicle or pedestrian traffic on I-5, SR 99, I-5/I-90 interchange, SR 519 and city streets through downtown Seattle and SODO.

Visit our What's Happening Now website  for current conditions in the downtown and SODO area. 

Heading to/from the Seattle Ferry Terminal?
Visit our Ferry Access and & Alaskan Way S. Closure  website  to see how to access the ferry terminal (Colman Dock) and Alaskan Way S. on foot and from I-5 and I-90.

Downtown Seattle and SODO construction map View (pdf 735 KB) our downtown Seattle and SODO area construction map to see what city streets and area highways will close.

Last update: 10:28 a.m., 5/24
SR 99: S. Holgate Street to S. King Street Viaduct Replacement Project Get project information  

Next week:

Tuesday, May 29 until the morning of Wednesday, May 30 – The southbound SR 99 off-ramp to South Atlantic Street will be closed from 9 p.m. to 5 a.m.

Last update: 10:34 a.m., 5/24
SR 99 Tunnel Project
Get project information

This week:

• Monday, May 21 – Wednesday, May 23 – Sixth Avenue North between Thomas and Harrison streets will be closed around-the-clock.
• Thursday, May 24 – Friday, May 25 – Northbound Sixth Avenue North between Thomas and Harrison streets will be closed from 7 a.m. to 5 p.m. daily.
• Monday, May 21 – Friday, May 25 – John Street will be closed between Taylor Avenue North and Sixth Avenue North from 7 a.m. to 5 p.m. daily. Alley access will be maintained.

Next week:

• Tuesday, May 29 – Friday, June 1 – John Street will be closed between Taylor Avenue North and Sixth Avenue North from 7 a.m. to 5 p.m. daily. Alley access will be maintained.
• Tuesday, May 29 – Friday, June 1 – Northbound Sixth Avenue North between Thomas and Harrison streets will be closed from 7 a.m. to 5 p.m. daily.
• Tuesday, May 29 – Friday, June 1 – Flaggers will alternate one-way traffic on Thomas St. between SR 99 and Sixth Avenue North from 7 a.m. to 5 p.m. 

Last update: 10:24 a.m., 5/24
City of Seattle: Mercer East Phase I
Get project information

Ongoing closures:

• Through fall 2012 - Eastbound Broad Street is closed between Fifth Avenue North and Ninth Avenue North. Westbound Broad Street will remain open.
• Through fall 2012 - Mercer Street between Fairview Avenue North and Minor Avenue North is closed for utility work.
• Through mid-2013 - Boren Avenue North is closed between Valley Street and Mercer Street until the end of the project.

This week:

• Monday, May 21 – Friday, May 25 – Northbound Ninth Avenue North will close between Republican and Mercer Streets from 7 p.m. to 6 a.m. construction closures are scheduled this week.

Last update: 10:35 a.m., 5/24
City of Seattle: Mercer West Phase II
Get project information

This week:

• No construction closures are scheduled this week.

Last update: 10:58 a.m., 5/17
City of Seattle: Terry Avenue North Street Improvement Project

• Until May 25  – Terry Avenue North between Mercer and Harrison streets will close around-the-clock. Sidewalks and intersections will remain open throughout the project.

Last update: 10:59 a.m., 5/10
Seattle City Light - various projects

• Until further notice  – Harrison Street between SR 99 and the alleyway, west of SR 99, will close around-the-clock.

Last update: 10:36 a.m., 5/24
Private construction: Gates Foundation Project

Ongoing closures:

• Until Wednesday, June 20 – The southbound SR 99 Aurora Avenue North exit to Broad Street will be closed close around-the-clock.

This week:

• No construction related closures are scheduled. 

Last update: 10:37 a.m., 5/24
SR 99 Tunnel Project
Get project information

Long-term closures:

• Permanently closed - Parking beneath the viaduct between South King Street and Spring Street.
• Until further notice -  Until further notice - Bicycles and pedestrians on Alaskan Way South will use a new path under the viaduct between South King Street and Yesler Way.

This week:

• Monday, May 21 – Friday, May 25 – The lanes adjacent to bus stop islands will be closed on Alaskan Way and in the ferry holding area between Madison and Columbia around-the-clock.
• Tuesday, May 22 – Saturday, May 26 – The southbound direction of the road beneath the viaduct will be closed between Yesler Way and Columbia Street from 9 p.m. to 5 a.m. nightly.

Next week:

• Tuesday, May 29 – Friday, June 1 – The lanes adjacent to bus stop islands will be closed on Alaskan Way and in the ferry holding area between Madison and Columbia around-the-clock.
  Tuesday, May 29 – Friday, June 1 – Flagger will alternate traffic in the intersection of Yesler Way and road under the viaduct from 9 p.m. to 5 a.m. nightly.
  

Last update: 10:41 a.m., 5/24
City of Seattle: Post Avenue Areaway Project

This week:

• No construction related closures are scheduled.

Last update: 10:44 a.m., 5/24
Seattle City Light: 115KV Transmission Line – Mid Mountain

Long-term closures:

• Until further notice - The pedestrian path on the east side of Alaskan Way South between Yesler Way and Madison Street is closed. Pedestrians, bicycles and other path users are detoured to the western sidewalk.

This week:   

• Monday, May 21 – Friday, May 25 – Western Avenue will be reduced to one shared lane of traffic, north of University Street from 7 a.m. to 10 p.m. Uniformed police officers will be on-hand to assist traffic.Western Avenue will be reduced to one shared lane of traffic, north of University Street from 7 a.m. to 3:30 p.m. daily. Uniformed police officers will be on-hand to assist traffic.

Next week:

• Monday, May 28 – Tuesday, May 29 – Western Avenue will be reduced to one shared lane of traffic, north of University Street from 7 a.m. to 10 p.m. Uniformed police officers will be on-hand to assist traffic.
• Monday, May 28 – Friday, June 1 – The roadway beneath the Alaskan Way Viaduct will be reduced to one lane between Spring and Seneca streets from 7 a.m. to 3:30 p.m.

Looking ahead:

• Monday, June 4 – Thursday, June 7 – The roadway beneath the Alaskan Way Viaduct will be reduced to one lane between Spring and Seneca streets from 7 a.m. to 3:30 p.m.

Last update: 10:45 a.m., 5/24
City of Seattle: First Hill Streetcar

Looking ahead:

• Saturday, June 2 – One lane will be maintained on South Jackson Street between Fifth Avenue South, on Sixth Avenue South at South Jackson Street, and on Fifth Avenue South at South Jackson Street from 7 a.m. to 7 p.m.
• Sunday, June 3 – One lane will be maintained on South Jackson Street between Fifth Avenue South, on Sixth Avenue South at South Jackson Street, and on Fifth Avenue South at South Jackson Street from 8 a.m. to 5 p.m.

Last update: 10:45 a.m., 5/24
Private construction: Comcast

• Wednesday, May 23 – Friday, May 25 – Northbound First Avenue South will be reduced to one lane between South Main Street and Yesler Way from 9 a.m. to 3 p.m. and then from 7 p.m. to 6 a.m.
• Friday, May 25 to the morning of Monday, May 28 - Northbound First Avenue South will be reduced to one lane between South Main Street and Yesler Way from 9 a.m. to 6 a.m.
• Tuesday, May 29 – Friday, June 1 – Northbound First Avenue South will be reduced to one lane between South Main Street and Yesler Way from 9 a.m. to 3 p.m. and then from 7 p.m. to 6 a.m.
  

Last update: 12:15 p.m., 5/24
SR 99: S. Holgate Street to S. King Street Viaduct Replacement Project #7847
Travis Phelps , WSDOT Communications, 206-805-2861
Get project information

• Until May 31 – East Marginal Way South is reduced to two lanes of traffic between South Atlantic Street to South Massachusetts Street around-the-clock.

Looking ahead:

• Friday, June 1 – Monday, June 4 – East Marginal Way South will close at 7 p.m. Friday until 5 a.m. Monday.

Last update: 10:48 a.m., 5/24
SR 99 Tunnel Project
Get project information

• No construction related closures are scheduled.

Last update: 12:20 p.m., 5/24 City of Seattle: S. Spokane Street Project
Get project information

Ongoing closures:

• Through May 29 – The Eastbound Spokane Street Viaduct off-ramp to Fourth Avenue South is closed. Traffic will use the First Avenue South off-ramp.
• Until further notice – The Eastbound Harbor Island on-ramp is restricted to northbound SR 99 access only. 
   

This week:

• Thursday, May 24 – Fourth Avenue South will be reduced to one lane in each direction at South Spokane Street from 9 p.m. to 5 a.m.
• Tuesday, May 22 and Thursday May 24 – The eastbound Spokane Street Viaduct will be reduced to one lane from 9 p.m. to 5 a.m.
• Monday, May 21 – Wednesday, May 23 – Southbound East Marginal Way South through traffic will be detoured at the South Spokane Street intersection slightly west and back through the intersection from 9 p.m. to 5 a.m. Monday, May 21 – Friday, May 25 – Sixth Avenue South and South Spokane Street both will be restricted to one lane in each direction at the intersection from 9 p.m. to 5 a.m. The closure will be delayed on sporting event nights.
• Thursday, May 24 – Friday, May 25 – Northbound East Marginal Way South will be detoured at South Spokane Street to continue north under SR 99. Traffic wishing to turn west at South Spokane Street will be detoured north to South Hanford Street to U-turn back south and continue west on South Spokane Street.

Next week:

• Tuesday, May 29 – The eastbound Spokane Street Viaduct will be reduced to one lane from 9 p.m. to 5 a.m. Beginning the morning of Wednesday, May 30, the Fourth Avenue South off-ramp will reopen and the First Avenue off-ramp will close for approximately 4 weeks.
• Tuesday, May 29 – Thursday, May 31 – Sixth Avenue South and South Spokane Street will be restricted to one lane in each direction at the intersection from 9 p.m. to 5 a.m. The closure will be delayed on sporting event nights.

Looking ahead:

• Saturday, June 9 – Monday, June 11 – All westbound lanes of the Spokane Street Viaduct will be closed at 6 p.m. Saturday evening through 5 a.m. Monday morning between I-5 and SR 99. The closure time is delayed into Saturday due to events at the stadiums in SODO on Saturday.

Last update: 12:20 p.m., 5/24
City of Seattle: Airport Way South Viaduct over Argo Railroad Yard Rehabilitation Project
Get project information

• Through early 2013 – Airport Way South over Argo Railroad Yard Bridge will be closed for up to 14 months. Detours are in place via Fourth Avenue South around the construction area.

Last update: 9:42 a.m., 5/17
Private construction: SODO Builders  

This week:

• No construction related closures are scheduled this week.

Last update: 12:40 p.m., 5/24
SR 99: Aurora Bridge Seismic Retrofit
John Chi , Project Engineer, 425-489-5400

• Tuesday, May 29 to the morning of Wednesday, May 30 – Southbound SR 99 will close between North 39th Street and Queen Anne Drive from 10 p.m. Tuesday, May 29 through 5 a.m. Wednesday, May 30. Northbound will close between Western Avenue and North 39th Street from 11:59 p.m. Tuesday, May 29 through 5 a.m. Wednesday, May 30. 

Last update: 12:40 p.m., 5/24

I-5: Sound Transit

• Wednesday, May 23 to the morning of Thursday, May 24 - Sound Transit crews will close the carpool lane of southbound I-5 nea Boren Avenue, from 11:59 p.m. to 5 a.m. for construction work.

Last update: 12:45 p.m., 5/24
I-5 express lanes schedule changes 
WSDOT typically operates the I-5 express lanes during the weekdays in the southbound direction from 5 a.m. to 11 a.m. and northbound from noon to 11 p.m. The weekend schedule operates southbound from 7 a.m. to 1 p.m. and northbound from 2 p.m. to 11 p.m. Get the express lane schedule .

• Wednesday, May 23 to the morning of Friday, May 25 - The express lanes will close nightly at 9 p.m. for construction work. They will reopen daily at 5 a.m. in the southbound direction.
• Monday, May 28 - The express lanes will operate on the normal weekend schedule: southbound from 7 a.m. to 1 p.m. and northbound from 2 to 11 p.m.

Last update: 12:50 p.m., 5/24
I-5: Express Lane Automation #8102
Milepost: 167.02
John Chi , Project Engineer, 425-489-5402
Get project information

• Monday, May 21 to the morning of Friday, May 25 - Crews will close the right lane of northbound I-5 in various locations between Dearborn Avenue and Northeast 145th Street, nightly from 8 p.m. to 5 a.m. for construction work. 
• Monday, May 21 to the morning of Friday, May 25 - Crews will close the right lane of southbound I-5 in various locations between Northeast 145th Street and Dearborn Avenue, nightly from 9 p.m. to 5 a.m. for construction work. 
• Monday, May 21 to the morning of Friday, May 25 - Crews will close at 9 p.m. nightly, for construction work. The lanes will reopen daily in the southbound direction at 5 a.m.

Last update: 12:50 p.m., 5/24
I-5: N.E. 45th Street Sign Bridge Replacement

• Monday, May 21 to the morning of Friday, May 25 - Crews will close two lanes of southbound I-5 at Northeast 45th Street, nightly, for shaft drilling and concrete work. The first lane closes at 9 p.m., the second at 11 p.m. and both lanes reopen daily by 5 a.m.
• Thursday, May 24 to the morning of Friday, May 25 - Crews will close the Northeast 50th Street on-ramp to southbound I-5 from 9 p.m. to 5 a.m. Drivers will be detoured to the Northeast 45th Street on-ramp.
• Tuesday, May 29 to the morning of Wednesday, May 30 - Crews will close the Northeast 50th Street on-ramp to southbound I-5 from 9 p.m. to 5 a.m. Drivers will be detoured to the Northeast 45th Street on-ramp.
  

Last update: 12:49 p.m., 5/24
I-90 express lanes schedule
The express lanes operate on a schedule to assist the flow of traffic during busy travel times. These lanes are scheduled to move in the direction that will relieve the most congestion from the transportation system. Get the regular express lanes schedule.

• Saturday, May 26 - The express lanes will close to eastbound traffic at 5 a.m. and open westbound at 6 a.m. due to a baseball game. The lanes will close at 4:30 p.m. and reopen to eastbound traffic by 5:30 p.m.
• Sunday, May 27 - The express lanes will close to east bound traffic at 5 a.m. and open westbound at 6 a.m. due to a baseball game. The lanes will close at 2 p.m. and reopen to eastbound traffic by 3 p.m.
• Monday, May 28 - The express lanes will operate on the regular weekend schedule: they will be open in the eastbound direction until 11:59 p.m. and will open westbound at 1 a.m. Tuesday.

Last update: 12:34 p.m., 5/24
I-90: Two-Way Transit and HOV Operations, Stage 2, #7870
Hien Trinh , Project Engineer, 425-956-2153
Get project information  

• Until further notice - The I-90 reversible express lanes are reduced to one lane near Island Crest Way for construction.

Last update: 11:19 a.m., 5/24
SR 520: Medina to SR 202 Eastside Transit and HOV project # 7963
Mark Allison , Project Engineer, 425-998-5255
Get project information   

This week:

• Monday, May 21 to the morning of Friday, May 25 - Crews will close the 84th Avenue Northeast on-ramp to westbound SR 520, nightly from 9 p.m. to 5 a.m. for lighting and deck work.  
• Monday, May 21 to the morning of Friday, May 25 - Crews will close the right lane of westbound SR 520 from 84th Avenue Northeast to to Evergreen Point Road, nightly from 9 p.m. to 5 a.m. for lighting and deck work.
• DRIVER ALERT - Tuesday, May 22 to the morning of Thursday, May 24 - Crews will close eastbound SR 520 from Montlake Boulevard to 92nd Avenue Northeast, nightly from 11 p.m. to 5 a.m.
• Thursday, May 24 to the morning of Friday, May 25 - Crews will close the right lane of eastbound SR 520 from Evergreen Point Road to 84th Avenue Northeast, from 11 p.m. to 5 a.m. for utility, lighting and deck work.

Next week:

• Wednesday, May 30 to the morning of Thursday, May 31 - Crews will completely close westbound SR 520 floating bridge and highway from 92nd Avenue Northeast to Montlake Boulevard from 11 p.m. to 5 a.m.

Thursday, May 24

• Tutankhamun: The Golden King and the Great Pharaohs, Pacific Science Center, 10 a.m.
• Seattle Mariners vs. Los Angeles Angels, Safeco Field, 7:10 p.m.
• Roger Waters - The Wall Live, Key Arena, 8 p.m.

Friday, May 25

• Tutankhamun: The Golden King and the Great Pharaohs, Pacific Science Center, 10 a.m.
• Seattle Mariners vs. Los Angeles Angels, Safeco Field, 7:10 p.m.

Saturday, May 26

• Tutankhamun: The Golden King and the Great Pharaohs, Pacific Science Center, 10 a.m.
• Seattle Mariners vs. Los Angeles Angels, Safeco Field, 4:15 p.m.

Sunday, May 27

• Tutankhamun: The Golden King and the Great Pharaohs, Pacific Science Center, 10 a.m.
• Seattle Mariners vs. Los Angeles Angels, Safeco Field, 1:10 p.m.

Friday, June 1

• Seattle Storm vs. Tulsa Shock, Key Arena, 7:00 p.m.

Saturday, June 2

• Sorry for Party Rocking Tour Featuring LMFAO, Key Arena, TBD

Sunday, June 3

• Susan G. Komen Puget Sound Race for the Cure, Seattle Center, 7 a.m.

Wednesday, June 6

• Chickenfoot, WaMu Theater, 7:30 p.m.

Friday, June 8

• Seattle Mariners vs. Los Angeles Dodgers, Safeco Field, 7:10 p.m.

Saturday, June 9

• University of Washington Graduation, CenturyLink Field, 12 p.m.
• Seattle Pacific University Commencement, Key Arena, 12:30 p.m.
• Seattle Mariners vs. Los Angeles Dodgers, Safeco Field, 4:15 p.m.
• Thrice, Showbox SoDo, 7:30 p.m.

Sunday, June 10

• Seattle Mariners vs. Los Angeles Dodgers, Safeco Field, 1:10 p.m.
• Seattle University Commencement, Key Arena, 8:30 a.m.

Tuesday, June 12

• Seattle Mariners vs. San Diego Padres, Safeco Field, 7:10 p.m.

Wednesday, June 13

• Seattle Mariners vs. San Diego Padres, Safeco Field, 7:10 p.m.

Thursday, June 14

• Seattle Mariners vs. San Diego Padres, Safeco Field, 7:10 p.m.

Friday, June 15

• Seattle Mariners vs. San Francisco Giants, Safeco Field, 7:10 p.m.

Saturday, June 16

• Seattle Mariners vs. San Francisco Giants, Safeco Field, 7:10 p.m.

Sunday, June 17

• Seattle Mariners vs. San Francisco Giants, Safeco Field, 1:10 p.m.
• Seattle Storm vs. Minnesota Lynx, KeyArena, 6 p.m.