The new SR 99 tunnel under downtown Seattle
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pass for the SR 99 tunnel
The new tunnel provides a direct route under downtown from the stadiums to the Space Needle. The south end connects to Alaskan Way and downtown, the north end connects to Seattle Center and South Lake Union.
With the tunnel open, work has begun on removing the Alaskan Way Viaduct and closing the Battery Street Tunnel. Three blocks of Aurora Avenue North where the Battery Street Tunnel once connected to SR 99 are also being rebuilt.