This one was NOT planned, so we’re sharing it to warn everybody who heads home via 1st Avenue South southbound. Just in from SDOT:

The southbound, right hand lane of First Ave S, between the First Ave off-ramp from SR99 and Royal Brougham Way, was closed this afternoon for an emergency repair to a fiber optic line. At this time we do not have an estimated time for reopening the lane.

4:01 PM UPDATE: Another update from SDOT:

Construction crews have closed the right lane of southbound First Avenue S. between S. Dearborn Street and S. Royal Brougham Way to repair a damaged fiber optic line. The closure is not affecting the southbound off-ramp from the Alaskan Way Viaduct. It is too soon to determine how long the closure is expected to last. Repairs could last into the weekend.