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March 1, 2012

Long-term lane closure coming to southbound SR 99/Aurora Avenue North

Posted on March 1, 2012

Drivers face increased congestion for the next six weeks on southbound State Route 99/Aurora Avenue North approaching downtown Seattle. Anticipated backups begin March 6 when crews building the SR 99 tunnel narrow southbound Aurora from three lanes to two between Republican and John streets, just north of the Battery Street Tunnel.

The lane closure is scheduled to last through at least mid-April and will give crews space to relocate utilities buried up to 15 feet beneath the westernmost lane of the roadway. Relocating the utilities will allow crews to begin building the SR 99 tunnel’s north portal, which will be located near Harrison Street between Sixth Avenue North and Aurora.

As a result of the lane closure, King County Metro Transit will begin detouring buses that use this section of southbound SR 99/Aurora Avenue North at 9 p.m. Monday, March 5. More information will be available soon at King County Metro’s Alert Center.

Drivers can find regularly updated traffic closure information for downtown Seattle on the construction traffic update.