Seattle Department of Transportation has issued an update on all the construction work on roadways and the impact on transportation through SODO and on to downtown Seattle. Also included in this update are roadwork projects in key areas of downtown and special events that may cause traffic tie-ups or slowdowns:

Highlights:
- 4th Ave S will be fully closed between Royal Brougham and Edgar Martinez the entire weekend (Mar 19-22).
- Crews will be closing the Alaskan Way Viaduct from 6AM to 6PM both Saturday, March 27th and Sunday, March 28th for bi-annual maintenance.
- Waterline work is starting soon on 1st Ave S near S Spokane St. Lane restrictions will be in place for approximately five months, including reducing the EB off-ramp from the Spokane St Viaduct to one lane.

West Seattle Planned Construction / Events

March 27-28
6AM to 6PM daily

Maintenance Closure of Alaskan Way Viaduct

Crews will be closing the Alaskan Way Viaduct both Saturday and Sunday for bi-annual maintenance.

Through Apr 5
24/7

Road closure on SW Oregon Way/23rd Ave SW

Crews will close SW Oregon St /23rd Ave SW/22nd Ave SW in West Seattle near Delridge Way SW for a contractor to install underground utilities.

Through
Jun 2010

Spokane Street 4th Avenue Eastbound Off-Ramp and Widening Projects (SDOT)

Eastbound S Spokane St between East Marginal Way S and 6th Ave S is closed.

Through
Dec 2012

Westbound S Spokane St between 6th Ave S and East Marginal Way S is closed.

Through
March 2010

1st Ave S is reduced to two travel lanes in each direction from approximately S Hanford to S Dakota Streets. Parking is also be removed in this area.

Through
Dec 2010

4th Ave S is reduced to one travel lane in each direction from approximately S Hanford to S Dakota Streets.

SODO Planned Construction / Events

Mar 19-22
7PM thru 5AM

Full closure on 4th Ave S for falsework removal

4th Ave S will be fully closed between Royal Brougham and Edgar Martinez Dr S to remove falsework underneath the new ramp the entire weekend.

as early as
Mar 22-Aug 2010

Waterline work on 1st Ave S

Crews will be installing a water main on 1st Ave S between Horton and Dakota streets. One lane of travel will be open in each direction and the eastbound off-ramp from the Spokane St Viaduct to 1st Ave S will be reduced to one lane.

Mar 22
Through
Summer 2010

Airport Way S Paving - Phase 1

Crews will be paving Airport Way S between S Royal Brougham Way and S Spokane St. Two lanes of traffic will be open in the peak direction, one lane in the opposite direction.

Mar 22-23
9PM to 5AM

Closure of all ramps to/from Edgar Martinez Dr (No Access to I-90 overnight from Edgar Martinez)

Crews will close all of the ramps to and from Edgar Martinez Drive S and both directions of Edgar Martinez Drive S both nights. These closures will block access to I-90 EB at this location. A signed detour will guide drivers around the closures.

Mar 22-Apr 16
9AM to 3PM

Lane closures on 1st Ave S near Royal Brougham Way

Crews will reduce 1st Ave S to one lane in each direction to install a new duct bank.

Through Mar 26
9PM to 5AM

Westbound I-90 Off-ramp to 4th Ave S closed nightly

Crews will close the I-90 westbound off-ramp to 4th Ave S nightly. A detour will be provided.

Through Mar 30
7AM to 4PM

Periodic lane closures on Utah Ave S

Crews working for SODO Builders LLC will periodically close one lane of northbound or southbound Utah Ave S between S Atlantic St and S Massachusetts St each weekday.

Through Apr 2
7PM to 5AM

Closure of Alaskan Way S from Atlantic to Massachusetts

Crews will close Alaskan Way S between S Massachusetts St and S Atlantic St nightly.

Through Mar 26
9PM to 5AM

Closure of 4th Ave S near Qwest Field

Crews will close 4th Ave S between S Royal Brougham Way and Edgar Martinez Dr S nightly.

March 27-28
6AM to 6PM daily

Maintenance Closure of Alaskan Way Viaduct

Crews will be closing the Alaskan Way Viaduct both Saturday and Sunday for bi-annual maintenance.

Through April
24/7

Center Turn Lane removed on Alaskan Way S in SODO

Crews will close the center turn lane on Alaskan Way S between Massachusetts and Atlantic around the clock.

Mar 25
6:30PM

Seattle Sounders FC vs Union

At Qwest Field

Mar 29-30
9PM to 5AM

Closure of all ramps to/from Edgar Martinez Dr (No Access to I-90 overnight from Edgar Martinez)

Crews will close all of the ramps to and from Edgar Martinez Drive S and both directions of Edgar Martinez Drive S both nights. These closures will block access to I-90 EB at this location. A signed detour will guide drivers around the closures.

Mar 29-Apr 2
7PM to 5AM

Full closure of Royal Brougham each night

Crews will close S Royal Brougham Way between 1st Ave S and Alaskan Way S nightly.

late-April/
early-May 2010

S Dearborn St Paving

Crews will be paving S Dearborn St between 5th Ave S and 10th Ave S.

May 17, 2010

1st Ave S WB On-Ramp to the West Seattle Bridge Permanently Closed

Crews will permanently close the 1st Ave S westbound on-ramp to the West Seattle Bridge. Crews will then begin to rebuild an on/off-ramp on 1st Ave S at S Spokane St. The new structure is slated to open in 2012.

Through
Jun 2010

Spokane Street 4th Avenue Eastbound Off-Ramp and Widening Projects (SDOT)

Eastbound S Spokane St between East Marginal Way S and 6th Ave S is closed.

Through
Dec 2012

Westbound S Spokane St between 6th Ave S and East Marginal Way S is closed.

Through
March 2010

1st Ave S is reduced to two travel lanes in each direction from approximately S Hanford to S Dakota Streets. Parking is also be removed in this area.

Through
Dec 2010

4th Ave S is reduced to one travel lane in each direction from approximately S Hanford to S Dakota Streets.

Through
Feb 2010

SR 519

The sidewalk on the north side of Edgar Martinez Way is closed. Also, crews have closed the stairs and sidewalk on the southbound 4th Ave S ramp to I-5, I-90, etc.

Through
Summer 2010

3rd Ave S is closed between Royal Brougham and Edgar Martinez Dr.

Through
Summer 2010

Royal Brougham closed between Occidental Ave S and 4th Ave S. Parking access maintained before and after major events.

Through
mid-2011

East Marginal Way Grade Separation

Duwamish Ave S is closed to through traffic (except local access). The right lane of eastbound S Spokane St is also closed between Duwamish Ave S and East Marginal Way South for the duration of the project.

Through
Dec 2010

Crew work on Occidental Ave S between S King St and Royal Brougham

SPU crews will be drilling water monitoring holes on Occidental Ave S in preparation of a new vault being installed.

Downtown Seattle Planned Construction / Events

Mar 19-21
7PM to 8PM

4th Ave down to one lane through downtown (Union St to Olive Way)

Crews will reduce 4th Ave to one travel lane all weekend from Union St to Olive Way. They will be working at 3 different intersections in the corridor. An additional travel lane may open up later in the weekend as work progresses.

Through Apr 2

Parking removed on 4th Ave south of Blanchard St

Crews will remove approximately 120 feet of parking on 4th Ave, south of Blanchard St to perform pumping tests to evaluate groundwater.

Mar 20
6AM to 4PM

Paving on Mercer St

Crews will be adding a thin layer of asphalt to Mercer St to repair the street until it can be rebuilt. Two lanes of will remain open to traffic between Fairview and Westlake.

Mar 21
1PM

Iraq War 7th Annual Protest March and Rally

Beginning at Westlake Park, ending at Victor Steinbrueck Park

Mar 22
7PM to 2AM

Olive Way closed between 3rd and 4th Ave

Crews will close Olive Way between 3rd and 4th Ave overnight for paving.

March 27-28
6AM to 6PM daily

Maintenance Closure of Alaskan Way Viaduct

Crews will be closing the Alaskan Way Viaduct both Saturday and Sunday for bi-annual maintenance.

Through May 31
7AM to 2:45PM

Lane closure on Denny Way at 6th Ave

One lane of Denny Way between 6th Ave and the alley to the east will be closed for the rest of March each weekday to construct a sidewalk.

Through
May 2010

4th Ave Paving

Crews are paving 4th Ave through downtown from James St to Olive Way. Two lanes will be open to traffic. Some bus stops will be closed and closures will be posted at the stop.

Through
Aug 2010

Virginia St Paving

Crews working for SDOT will be paving Virginia Street from 1st Ave to Boren Ave. As part of this work, Seattle City Light will be installing an electrical duct bank from 1st to 8th Ave. Expect lane closures throughout the work zone.

Through
Aug 2010

Olive Way Paving

Crews will be paving Olive Way from 3rd to 6th Ave as well as 9th to Terry Ave. The project includes some sidewalk widening.

South Seattle Planned Construction / Events

Date(s) and Times

Project Name / Agency

Description of Traffic Impacts

Through Mar 22
8AM to 3PM

Lane closure on SR 99 at 14th Ave S

Crews will close the left lane of southbound SR 99 from 14th Ave S to S 102nd St each weekday.

Mar 24
10AM to 3PM

Signal outage on E Marginal Way S and S Idaho St

Crews will shut down the signal on E Marginal Way S and S Idaho St. Police officers will direct traffic through the intersection.

Mar 25
10AM to 3PM

Signal outage on E Marginal Way S and Diagonal Ave S

Crews will shut down the signal on E Marginal Way S and Diagonal Ave S. Police officers will direct traffic through the intersection.

Apr 3
9AM to 4PM

Lane closures on the 12th Ave S Bridge over I-90

Crews will close a single lane of the 12th Ave S (Jose Rizal) Bridge over I-90. Single lane closures will occur in both directions, though not simultaneously.

May 2010

S Columbian Way Paving

Crews will be paving S Columbian Way between 15th Ave S and Beacon Ave S.

SR 99 Planned Construction / Events

Mar 20-21
7AM to 11AM

Lane closures on the Aurora Bridge

Crews will close the two right lanes of southbound traffic on the Aurora Bridge.
Sat: 7AM to 10AM, Sun: 7AM to 11AM

Through Mar 22
8AM to 3PM

Lane closure on SR 99 at 14th Ave S

Crews will close the left lane of southbound SR 99 from 14th Ave S to S 102nd St each weekday.

Mar 22
7PM to 5AM

Lane closure on Aurora Ave N at N 130th St

Crews will close up to two lanes of both northbound and southbound Aurora Ave N at N 130th St overnight.

Mar 22
7AM to 3PM

Lane closures on Aurora Ave N at Ward St

Crews will work in the one lane in each direction of SR 99 at Ward Street. The northbound lane will closed between 7AM until 2PM, and the southbound lane will be closed from 9AM to 3PM.

Mar 22-31
9AM to 2:30PM

Lane closure on the Alaskan Way Viaduct

Crews will close the northbound left lane of the Alaskan Way Viaduct at S Massachusetts St for accident rail repair.

Mar 23
7PM to 5AM

Lane closure on Aurora Ave N at N 135th St

Crews will close up to two lanes of both northbound and southbound Aurora Ave N at N 135th St overnight.

Mar 23
7AM to 2PM

Signal outage on Aurora Ave N at N Winona St

Crews will shut down the signal on Aurora Ave N at N Winona St. Police officers will direct traffic through the intersection.

Mar 24-25
7AM to 3PM

Lane closures on Aurora Ave N at Ward St

Crews will work in the one lane in each direction of SR 99 at Ward Street. The northbound lane will closed between 7AM until 2PM, and the southbound lane will be closed from 9AM to 3PM.

Mar 24
7PM to 5AM

Lane closure on Aurora Ave N at N 145th St

Crews will close up to two lanes of both northbound and southbound Aurora Ave N at N 145th St overnight.

Mar 24
10AM to 3PM

Signal outage on E Marginal Way S and S Idaho St

Crews will shut down the signal on E Marginal Way S and S Idaho St. Police officers will direct traffic through the intersection.

Mar 25
10AM to 3PM

Signal outage on E Marginal Way S and Diagonal Ave S

Crews will shut down the signal on E Marginal Way S and Diagonal Ave S. Police officers will direct traffic through the intersection.

March 27-28
6AM to 6PM daily

Maintenance Closure of Alaskan Way Viaduct

Crews will be closing the Alaskan Way Viaduct both Saturday and Sunday for bi-annual maintenance.

I-5 Planned Construction / Events

Mar 22-23
9PM to 5AM

Closure of all ramps to/from Edgar Martinez Dr (No Access to I-90 overnight from Edgar Martinez)

Crews will close all of the ramps to and from Edgar Martinez Drive S and both directions of Edgar Martinez Drive S both nights. These closures will block access to I-90 EB at this location. A signed detour will guide drivers around the closures.

Through Mar 26
9PM to 5AM

Westbound I-90 Off-ramp to 4th Ave S closed nightly

Crews will close the I-90 westbound off-ramp to 4th Ave S nightly. A detour will be provided.

Mar 29-30
9PM to 5AM

Closure of all ramps to/from Edgar Martinez Dr (No Access to I-90 overnight from Edgar Martinez)

Crews will close all of the ramps to and from Edgar Martinez Drive S and both directions of Edgar Martinez Drive S both nights. These closures will block access to I-90 EB at this location. A signed detour will guide drivers around the closures.

Mar 31-Apr 1
9PM to 5AM

I-5 SB Off-Ramp to 4th Ave S closed nightly

The I-5 southbound off-ramp to 4th Ave S will be closed both nights. A detour will be provided.

Mar 31-Apr 21
9PM to 5AM

I-5 NB Off-Ramp to 4th Ave S Closed Around the Clock

The I-5 northbound off-ramp to 4th Ave S will be closed around the clock during this period. A detour will be provided.