Sunday night means it’s time for our weekly list of traffic alerts/notes for the week ahead – as announced so far. This week’s big highlight will be the long-awaited opening of the new westbound Spokane Street Viaduct on/offramp at 1st Avenue South; SDOT says that will happen by 6 am Friday. Here’s what else is ahead:

TONIGHT (Sunday 8/26)
99/Alaskan Way Viaduct: Closed southbound, Battery St. Tunnel to West Seattle Bridge, 9 pm-5 am

MONDAY 8/27
99/Alaskan Way Viaduct: Closed southbound, Battery St. Tunnel to West Seattle Bridge, 9 pm-5 am

TUESDAY 8/28
99/Alaskan Way Viaduct: Closed southbound, Battery St. Tunnel to West Seattle Bridge, 9 pm-5 am
Spokane Street Viaduct: Not on the SSV itself, but beneath it, northbound 1st Avenue South will close 10 pm-5 am at S. Spokane (explained here)

WEDNESDAY 8/29
99/Alaskan Way Viaduct: Closed southbound, Battery St. Tunnel to West Seattle Bridge, 9 pm-5 am
Spokane Street Viaduct: Not on the SSV itself, but beneath it, northbound 1st Avenue South will close 10 pm-5 am at S. Spokane (explained here)

THURSDAY 8/30
99/Alaskan Way Viaduct: Closed southbound, Battery St. Tunnel to West Seattle Bridge, 9 pm-5 am
Spokane Street Viaduct: Not on the SSV itself, but beneath it, northbound 1st Avenue South will close 10 pm-5 am at S. Spokane (explained here)

FRIDAY 8/31
Spokane Street Viaduct: New 1st Avenue South on/offramp from the westbound SSV is scheduled to open by 6 am today.

In case you need to refer back to this list during the week – it will remain linked atop the BIG STORIES list on the WSB sidebar.