Looking for the heart of construction to replace the Alaskan Way Viaduct? Look no further than the massive construction zone to the west of Seattle’s stadiums. This area will change frequently between now and the time the SR 99 tunnel opens to traffic.
Our interactive simulation shows you how the area will evolve as we continue replacing the viaduct.
New look on SR 99 near stadiums
To make room for the permanent connection between the SR 99 tunnel and the rest of SR 99 near the stadiums, crews rerouted the temporary SR 99 lanes through the area. Read more here.
Transforming the SR 99 tunnel launch pit
Seattle Tunnel Partners crews are transforming the tunnel launch pit into a double-decked stacked roadway that will connect to the existing SR 99 lanes near South Royal Brougham Way. This work also includes connecting the pit to the future operations building at the tunnel's south portal. Here's some raw video of crews reconfiguring the launch pit (view on YouTube of download WMV file).
South Atlantic Street overpass open to traffic
In early 2014, we opened a new overpass to the west of Seattle’s stadiums. The overpass allows traffic to bypass a busy railroad track that crosses South Atlantic Street. Before the overpass, train activity often blocked traffic for extended periods, which not only slowed truckers traveling to and from the Port of Seattle, but also created backups that stretched onto Seattle streets and Interstate 90. The overpass saves truckers as much as 20 minutes of travel time between the port and I-5 or I-90.
The section of Atlantic beneath SR 99 will remain closed to through traffic until the SR 99 tunnel opens to traffic. Drivers will now use the new overpass to travel in both directions between Atlantic and Alaskan Way South.
WSDOT is putting the finishing touches on a new permanent connection between the on-street bike lanes south of South Atlantic Street and the shared-use path from South King Street.
The north leg of the overpass will open to the public after the tunnel opens and will eventually link traffic to the new Alaskan Way and Seattle waterfront.