King County Metro provides RapidRide H Line construction update

King County Metro is working with the Seattle Department of Transportation (SDOT) and the city of Burien to upgrade Metro Bus Route 120 — one of the 10 busiest routes — to the RapidRide H Line. 

Following SDOT’s improvement to Delridge Way SW, King County Metro crews began construction of safety improvements throughout the project area in June 2021. Starting in fall 2022, RapidRide H Line will connect Burien, White Center and West Seattle to downtown Seattle and South Lake Union. The RapidRide H Line will improve travel times, reliability and connections to other buses and Sound Transit’s Link light rail. 

King County Metro’s construction on the RapidRide H Line project began in June 2021 and is expected to last through fall 2022. Typical work hours are Monday through Friday, 7:00 a.m. to 3:30 p.m., with some nighttime and weekend work. 

During construction, residents can expect: 

• Construction staging and parking impacts near the construction site. 
• Some sidewalk, intersection and lane closures. 
• Detours for people walking, biking and rolling. 
• Noise, vibrations and dust in the project area. 
• Temporary parking restrictions. 
• Periodic lane and driveway closures. 
• Large machinery and truck activity. 
• Flaggers to direct traffic around work areas. 
• Temporary bus detours and bus stop relocations for Route 120. 

What’s happening now 

Crews are continuing construction of safety improvements and bus station upgrades along the route. Work has already started or will begin in the coming weeks at the following locations in West Seattle, White Center and Burien. 

SW Barton Street (SW Barton Street and 25th Avenue SW intersection, and the crossing between 26th Avenue SW and 29th Avenue SW): 

• Sidewalk and curb ramp installation at the northeast corner of SW Barton Street and 25th Avenue SW. 
• Demolition and sidewalk and curb installation at the northwest corner of SW Barton Street and 25th Avenue SW. 
• Northbound and westbound station upgrades at SW Barton Street and 26th Avenue SW including electrical work and foundation and sidewalk installation. 

26th Avenue SW (SW Barton Street to SW Roxbury Street): 

• Demolition of existing pavement in the northbound lanes. 
• Signal installation at the 26th Avenue SW and SW Barton Street intersection and 26th Avenue SW and SW Roxbury Street intersection. 
• The northbound lanes of 26th Avenue SW between SW Barton Street and SW Roxbury Street will be closed to traffic. 
• People driving will not be able to access 26th Avenue SW from SW Cambridge Street. 
• The northbound bus stop at 26th Avenue SW and SW Barton Street will be temporarily relocated to SW Barton Street, within a block east of the intersection. 

Intersection at SW Roxbury Street and 15th Avenue SW (southwest, southeast, and northeast corners): 

• Storm, sewer and utilities work. 
• Sidewalk and curb ramp installation. 
• Curb and gutter installation. 
• Traffic signal modifications, 
• Northbound and southbound station upgrades at SW Roxbury Street and 15th Avenue SW, including electrical work, sidewalk and curb installation and safety railing installation. 

Ambaum Boulevard SW (SW 116th Street to SW 122nd Street): 

• Irrigation. 
• Curb installation. 
• Electrical installation. 
• Southbound station upgrades at Ambaum Boulevard SW and SW 122nd Street including demolition and retaining wall replacement.  

SW 136th Street (Ambaum Boulevard SW to 8th Avenue SW): 

• Demolition of sidewalk. 
• Electrical installation. 
• Storm drainage installation. 
• Sidewalk and curb installation.