Banner Way NE and NE 80th Street closed this weekend

Sound Transit

Starting the weekend of Friday, Oct. 2 at 8 p.m. Sound Transit’s contractor will close Banner Way NE just north of NE 80th Street to install dewatering wells. This work is needed to construct the cross passages for the future light rail tunnels. This will close the northbound I-5 on-ramp and access to N 85th Street at this location (see map). This work will take approximately four weekends during the month of October to complete.

What to expect:

Traffic Impact: Access to northbound I-5 on-ramp and N 85th Street at Banner Way NE and NE 80th Street will be CLOSED on the weekends below. Follow signage for detours:
o Friday, Oct. 2, 8 p.m. – Sunday, Oct. 4, 7 p.m.
o Saturday, Oct. 10, 7 a.m. – Sunday, Oct. 11, 7 p.m.
o Saturday, Oct. 17, 7 a.m. – Sunday, Oct. 18, 7 p.m.
o Saturday, Oct. 24, 7 a.m. – Sunday, Oct. 25, 7 p.m.

Construction Activities: Drilling into the concrete, removing ground material and installing the dewatering well. Drilling will  sound similar to a truck running with occasional hammering sounds. The vacuum truck will make noise while soil material is being removed. Drill rigs and support equipment may be temporarily stationed on streets during this work.

Equipment: Drill rig, trucks, traffic signage, cones, and vacuum trucks.

Access: Local access will be maintained. Traffic cones, No Parking signage, roadway signage, uniformed officers and flaggers may be used when travel lanes or parking areas are affected during this work.

The work is necessary to pump the ground water and temporarily lower the water table to construct the future Link light rail tunnel’s cross passages. A cross passage is a passageway that connects the twin tunnel light rail line located underground. Safety regulations require the installation of cross passages along the entire underground alignment about every 800 feet.

Sound Transit plans, builds and operates regional transit systems and services to improve mobility for Central Puget Sound. For information about Sound Transit projects or services, visit or call 1-800-201-4900 / TTY relay: 711.

24-hour construction hotline: 1-888-298-2395

The dewatering wells will be turned on as soon as they are installed. This work is only for the installation and development of the wells. This map shows the cross passage locations in the Maple Leaf and Roosevelt area where additional cross passage work will occur at a later date. This work is related to cross passage No. 39

What is Northgate Link Extension?
Northgate Link Extension will connect the Northgate, Roosevelt and U District neighborhoods to downtown Seattle and Sea- Tac airport. Fast, reliable service will provide relief to one of the region’s most congested traffic areas.
The 4.3 mile extension is expected to be open for service in 2021.

For further information, please contact Rhonda Dixon, Sound Transit Community Outreach Specialist, at 206-370-5300 or

For issues that need immediate attention after normal business hours, call Sound Transit’s 24- hour Construction Hotline at 1-888-298-2395.