The SB Highway 99 closure for this weekend, first noted here last weekend has new hours. From WSDOT:
The contractor working for the Washington State Department of Transportation has shortened the amount of time needed for paving work this coming weekend, so the closure of southbound State Route 99 through Seattle will start a little later and end a little earlier. The southbound viaduct will close at 11:59 (pm) Friday, Sept. 14 and run through 11:59 (pm) Sunday, Sept. 16.
Southbound SR 99 will be closed between the south end of the Battery Street Tunnel and South Spokane Street so crews can pour concrete near Atlantic Street. This will help advance some of the work needed to open the new SR 99 tunnel.
Looking ahead: Before the new SR 99 tunnel can open, WSDOT will have to close the viaduct for approximately three weeks. The lengthy closure is unavoidable as it is the only way crews can #realign99 into the tunnel and complete eight new entrance and exit ramps.
WSDOT does not yet have a date for the start of the three-week closure, but will give a minimum of one month’s advance notice to help travelers plan ahead as much as possible.
Back to this weekend – WSDOT has just postponed plans for lane/ramp closures on NB I-5. But the 99 work is still on as of right now.