Here’s the weekly list of traffic alerts – including a look ahead to NEXT weekend, when a full 99/Alaskan Way Viaduct closure is planned from Saturday morning through Sunday afternoon:

TONIGHT (Sunday 9/30): Southbound 99/Alaskan Way Viaduct will be closed between the Battery Street Tunnel and West Seattle Bridge fromm 9 pm tonight till 5 am Monday morning.

MONDAY (10/1): Two West Seattle projects continuing all week: First: Intensified work at the Barton Pump Station Upgrade Project may lead to intermittent lane closures at and near the Fauntleroy ferry terminal as soon as today, as explained on the 2nd page of this flyer. Work hours are expected to run 7 am-5:30 pm, Mondays-Fridays. Second: Ongoing Arbor Heights sidewalk and signal work at and south of 35th/Roxbury.

TUESDAY (10/2): Same as Monday. (Added: Highland Park Way work during the day, explained here.)

WEDNESDAY (10/3): Same as Tuesday. (Added: The West Marginal Way manhole work announced Tuesday – details here.)

THURSDAY (10/4): Same as Wednesday, plus: One brief early-morning closure for the almost-complete Spokane Street Viaduct Widening Project. (Moved to Saturday)

FRIDAY (10/5): Same as Wednesday.

SATURDAY (10/6): In addition to the 99/Viaduct closure (see next item), the offramp to 1st Avenue South from the westbound Spokane Street Viaduct is scheduled for closure 3 am-9 am.

NEXT WEEKEND, AVOID 99: Both directions of 99/Alaskan Way Viaduct will be closed between the Battery Street Tunnel and West Seattle Bridge for the semiannual inspection and maintenance, 6 am Saturday 10/6 till 4 pm Sunday 10/7. And a North Seattle note: Highway 99 across the Aurora Bridge will be one lane in each direction from 9 pm Friday 10/5 till 2 pm Sunday 10/7.