At 7:30 p.m. on Friday, Oct. 21, the State Route 99 Alaskan Way Viaduct, as we known it, ceased to exist.

While crews begin demolishing part of the viaduct and complete connections to new SR 99 lanes in SODO, drivers will face daily commutes without one of Seattle’s two north-south highways.

Traffic on Saturday will be especially heavy around CenturyLink Field as the Washington State Cougars play the Oregon State Beavers at 7:30 p.m. Drivers headed to the game should plan ahead for extra congestion.

The Washington State Department of Transportation urges football fans and daily viaduct commuters alike to find alternate ways to get to their destinations.

Tools for getting around:

· King County Metro http://www.kingcounty.gov/getyouthere
· Sound Transit http://www.soundtransit.org/
· Community Transit http://www.commtrans.org/
· Sound Transit Sounder Train http://www.soundtransit.org/rider-guide/sounder-train.xml
· Sound Transit Link Light Rail http://www.soundtransit.org/Rider-Guide/Link-light-rail.xml
· King County Water Taxi http://www.kingcounty.gov/WaterTaxi.aspx
· Rideshare Online and rewards http://www.kingcounty.gov/getyouthere
· SR 99 – South Holgate to South King Street project http://www.wsdot.wa.gov/Projects/SR99/HolgateToKing/

Closure details northbound

Northbound SR 99 between the West Seattle Bridge and South Royal Brougham Way will be closed from 7:30 p.m. Friday, Oct. 21 to 5 a.m. Monday, Oct. 31.

Northbound SR 99 between the South Royal Brougham Way on-ramp and the Battery Street Tunnel will be open from 5 a.m. to 7 p.m. Monday through Friday and for special events at CenturyLink Field.

Closure details southbound

Southbound SR 99 between the Battery Street Tunnel and West Seattle Bridge will be closed from 7:30 p.m. Friday, Oct. 21 to 5 a.m. Monday, Oct. 31.

Celebrate demolition progress with a commemorative walk on the viaduct

On Saturday, Oct. 22, the public is invited to take part in a commemorative walk on the viaduct as part of a farewell event to the southern mile of the structure. The walk is from 9:30 a.m. to 12:30 p.m. Elected officials will make formal remarks and celebrate this major milestone at 1 p.m. Attendees can also take home a commemorative piece of the viaduct. Check public events for details.

Parking will be available at the event site, on adjacent city streets and in nearby pay lots. We encourage attendees to take light rail or the bus. The closest light rail stop is Stadium Station. For bus route information, visit Metro's Trip Planner or call 206-553-3000.

“One Last Shot” contest winners selected

Our “One Last Shot” contest generated a great deal of interest, and we received nearly 600 submissions. A panel of judges including Program Administrator Linea Laird, KIRO’s Dave Ross and KOMO’s Ken Schram selected two winners, who will get exclusive access to the viaduct’s downtown section for 30 minutes on Oct. 22. Check the WSDOT blog later today for descriptions of the winning entries.