Follows August 24-27 weekend closure of Mercer I-5 on- and off-ramps
In a major step towards solving the decades-long “Mercer Mess,” the Seattle Department of Transportation (SDOT) announces that Mercer Street will open to two-way traffic on August 27 following the full weekend closure of the I-5 on- and off-ramps on August 24-27. While significant project work remains on Fairview Avenue N, Valley Street, and Westlake Avenue, by achieving this major milestone the Mercer Corridor Project (East Phase) will move into its third of four construction stages, continuing progress toward final completion next summer.
Full weekend closure of I-5 on- and off-ramps at Mercer Street August 24-27
During the next full weekend closure of the I-5 on- and off-ramps at Mercer Street, crews will complete the final work necessary for opening Mercer Street to two-way traffic, including concrete pavement, lane striping, and signal installation. Ramp closure hours will be from Friday at 11:00 p.m. to Monday at 5:00 a.m. Detour routes shown will be signed on roadways and may be heavily used, particularly Denny Way both eastbound and westbound.
During these closures, the I-5 on-ramp at University Street will be concurrently closed to provide more efficient traffic flow around the closed Mercer Street exit lane. Fairview Avenue N will also be closed between Mercer Street and Valley Street, and Mercer Street will be closed to through traffic between Westlake Avenue N and Fairview Avenue N. All detour routes will be clearly marked.
Beginning Thursday, August 23, a single lane on Mercer Street will be closed between Boren Avenue N and the Mercer Street I-5 on-ramps to accommodate median work near Fairview Avenue N that will facilitate the transition to two-way traffic on Mercer Street. The closure will be in effect beginning Thursday, August 23, at 7:00 p.m. through Friday, August 24, at 11:00 p.m., when the full weekend ramp closure will commence.
Mercer Street opens to two-way traffic; Stage 3 Fairview Avenue N restrictions begin August 27
Mercer Street will open to two-way traffic immediately following the full weekend closure of the I-5 on- and off-ramps at Mercer Street. The new roadway will then accommodate three lanes of westbound traffic that will travel straight off the I-5 off-ramps. Eastbound Mercer Street will maintain three lanes onto the I-5 on-ramps, in addition to a left turn lane onto northbound Fairview Avenue N as well as travel across Fairview Avenue N that allows eastbound access to Eastlake and Capitol Hill.
Stage 3 of the Mercer Corridor Project commences when Mercer Street is opened to two-way traffic and will include severe restrictions on Fairview Avenue N. Roadway users will see:
- One northbound travel lane on Fairview Avenue N between Harrison and Valley streets
- No access to Fairview Avenue N via Republican Street and no southbound access onto Fairview Avenue N at the I-5 off-ramps at Mercer Street
- One southbound lane on Fairview Avenue N from Aloha Street that connects to westbound Valley Street
- Valley Street closed to eastbound traffic east of Terry Avenue N
- Access maintained to Lake Union Park and businesses in Chandler’s Cove
This temporary configuration will be maintained during Stage 3 of construction as crews complete work on Fairview Avenue N and Valley Street. The work includes: undergrounding of electrical distribution, transmission and communication lines; replacement or relocation of water, sewer, and storm drainage systems; relocation of gas lines; widening of Fairview Avenue N ; and the installation of new pavement, sidewalks, signals, lighting, signage, intelligent transportation systems, landscaping and urban design features. Stage 3 is anticipated to continue through early 2013.
Detour information available for Stage 3 construction
Detour maps illustrating two-way traffic flow on Mercer Street as well as the Fairview Avenue N restrictions are available online for motorists, pedestrians and bicyclists at www.seattle.gov/Transportation/ppmp_mercer.htm
Impacts to transportation services
Due to upcoming construction on Fairview Avenue N, King County Metro Transit will temporarily reroute Routes 70/71/72/73, 83 and 309 beginning at 7:00 p.m. Friday, August 24. Buses will shift their routes off of Fairview Avenue N and travel instead on Eastlake Avenue N. A map of the reroute plan is online.
Also note that, unlike past weekend ramp closures, this closure will require the Seattle Streetcar to be shut down in order to accommodate the undertaking of opening Mercer to two-way operations and progress the project into Stage 3 construction. The Streetcar closure hours are to begin on Friday evening at 11:00 p.m. and extend to Monday morning at 5:00 a.m.
For more information about the project, its benefits or other factors, visit the website at www.seattle.gov/Transportation/ppmp_mercer.htm.
If you need this information translated, please call (206) 733-9990.
Si necesita traducir esta información al español, llame al (206) 733-9990.
Contact: Richard Sheridan, 1206-684-8540