new icn messageflickr-free-ic3d pan white
SR 99 automated closure gates system sign | by WSDOT
Back to album

SR 99 automated closure gates system sign

This sign is part of the Alaskan Way Viaduct's new automated closure gates system at the Bell Street on-ramp in Seattle. The system closes all nine access points to the viaduct when sensors detect an earthquake. WSDOT tested the system during the viaduct's semiannual inspection and maintenance closures on March 19-20, 2011.

 

Learn more about the automated viaduct closure system and the SR 99 Alaskan Way Viaduct Replacement Program.

1,517 views
0 faves
0 comments
Taken on March 19, 2011