Crews break ground on new off-ramp at the tunnel’s south portal

Posted on Aug 3 2016 4:24 PM
South-end travelers will soon see their future access point from northbound SR 99 to downtown Seattle and SODO take shape near the stadiums. 
 
Crews from Interwest Construction broke ground this week on a new bridge that will connect northbound SR 99 to South Dearborn Street when the SR 99 tunnel opens to traffic. Construction of the $3.56 million ramp is expected to last approximately nine months. 
 
This work won't significantly affect the public because it will take place inside the existing south portal work zone, although it will require a few overnight closures on SR 99. We will keep the public informed as work progresses.
 
South Dearborn Street Off-ramp Bridge   
The above rendering shows the future off-ramp from northbound SR 99 to South Dearborn Street, near the stadiums. Crews from Interwest Construction broke ground on the new ramp this week (below).
 
 
Ramp construction begins