Road construction associated with the Mercer West project is substantially complete, and North Portal construction related to the SR-99 viaduct and tunnel, is ongoing. The tunnel boring machine is expected to reach the north end of the SR-99 tunnel in early June, and the tunnel is expected to open in early 2019.
Please consider the following as you route your way to and from Seattle Center, and allow extra time in your travels during this critical period of transition on our roadways. If roads around the Mercer corridor are congested, consider other options to access I-5 and SR-99 using entry points south of Seattle Center, along 2nd Ave. and 5th Ave.
Until Further Notice: There will be weekday (6am-2pm) and Saturday lane closures north and southbound along Aurora Ave. N. on the Aurora Bridge during materials staging for the bridge painting project.
Until SR-99 Tunnel opens to traffic: 6th Ave N is closed between Thomas and Republican streets. Republican St. is closed between Aurora Ave. N and 6th Ave N.
Friday, Jan. 13 at 11pm to Monday, Jan. 16 at 5am: Eastbound I-90 will be reduced to one lane and diverted into the center roadway/express lanes between Seattle and Bellevue.
Friday, Jan. 27 at 11pm to Monday, Jan. 30 at 5am: Crews plan to close all lanes and ramps of SR-520, as well as the new floating bridge’s bicycle/pedestrian path, between 92nd Ave NE and Montlake Blvd as they continue work on removal of the old westbound SR 520 off-ramp that extends over the highway near Montlake.
Elliott Bay Seawall Project: Construction work between Pine and Pike streets is underway. This work is scheduled to be complete in mid-2017. The Seattle Aquarium and other waterfront businesses will remain open and access will be maintained at all times.
Seawall construction between Pine and Pike Streets will remove on-street parking, trees and some sidewalks. Access to the Seattle Aquarium, Waterfront Park and businesses will be maintained.
As construction expands to the Colman dock area, ferry access for bicyclists and vehicles will shift to Yesler. Please follow the direction of flaggers and signage to access your destination.