We are replacing the double-deck bridge section of SR 99 that runs along Seattle’s waterfront. This structure is called the Alaskan Way Viaduct, because it parallels the Alaskan Way surface street.

The viaduct’s south end, almost half of the structure, was demolished in October 2011, after we shifted SR 99 traffic onto a newly built section of SR 99 near the stadiums. The remaining viaduct along the downtown waterfront will be removed in 2016, after the SR 99 tunnel opens to traffic.