This weekend’s big events in West Seattle – the Alki Car Show on Saturday, the West Seattle Outdoor Movies debut Saturday night (“Mamma Mia!”), the West Seattle Garden Tour on Sunday (latter two co-sponsored by WSB – aren’t blocking streets. But elsewhere around the city, this weekend’s big events might land you in the middle of some changes. Read on for the latest list from SDOT:

It’s a big weekend coming up packed with events from Friday morning, July 16, through Sunday night, July 18. Over nine thousand bicyclists will test their stamina this weekend with the big Seattle to Portland (STP) bicycle ride; while another two thousand will swim, ride and run in the Seafair Triathlon taking place along the shores and in the waters of Lake Washington. Yet thousands more will put their taste buds to the test as they try different foods at the Bite of Seattle taking place at the Seattle Center. Other Seafair celebrations drawing huge crowds include the Bon Odori Festival, the Indian Days Pow Wow and the Classic Hot Rod Show.

The Seattle Department of Transportation warns motorists that there will be traffic congestion accompanying the various events and to plan accordingly. Drivers are encouraged to consider taking alternate modes of transportation – the Sounder commuter train, Link light rail, Metro Transit, car pool, bicycle or walk, if feasible. Please see the following schedule of events for areas where traffic will be impacted.

Friday, July 16

Bite of Seattle: 11 a.m. – 9 p.m.
Seattle Center
15,000 expected
Expect congestion in the area around the Center.

25th Annual Seafair Indian Days Pow Wow: 4 – 10 p.m.
Discovery Park
10,000 expected
Anticipate congestion in the area.

Saturday, July 17

Seattle to Portland 2010: 4:45 a.m.
Bike ride starts at University of Washington E-1 parking lot
9,700 participants
Waves of 500 to 900 cyclists will leave every ten minutes; all riders should be out onto the course by 7:30 a.m.; Seattle Police will escort riders until they reach Lake Washington Boulevard; expect congestion in the area

Classic and Hot Rod Show on Alki: 8 a.m. – 4 p.m.
Alki Beach Promenade
6,700 expected
No street closures, but anticipate congestion in the area.

Fat Water Open Water Swim: 8:30 a.m.
450 participants
Event takes place on Lake Washington between Day Street Boat Launch and Madison Park beach ; plan on congestion in the vicinity of Madison Park beach.

Seafair Triathlon Expo: 9 a.m. – 2 p.m.
Triathlon participants will pick up their race packet prior the Sunday’s event;
1,020
Event will close Ninth Avenue between Seneca and University streets from 7 a.m. to 3 p.m.; Anticipate congestion in the area.

25th Annual Seafair Indian Days Pow Wow: 10 a.m. – 10 p.m. at Discovery Park;
10,000 expected
Anticipate congestion in the area.

Bite of Seattle: 11 a.m. – 9 p.m.
30,000 expected
Anticipate congestion in the area around the Center.

Bon Odori Festival: 4 – 10:30 p.m.
Seattle Buddhist Temple (1427 S Main Street)
4,700 expected
Event will close S Main Street between 14th Avenue S to 16th Avenue S from 5 p.m. on Friday, July 16 through 11:59 p.m. on Sunday, July 18.

Sunday, July 18

Seafair Triathlon: first wave starts at 6:55 a.m.
Event takes place at Seward Park, in Lake Washington, and on surrounding roadways
2,025 participants
Lake Washington Boulevard S will be closed from Seward Park to I-90 from approximately 6:30-11 a.m. I-90 Express Lanes will be closed between Lake Washington Boulevard S and Mercer Island from approximately 6:30 – 10 a.m.; Bicycle Sunday follows on Lake Washington Boulevard.

25th Annual Seafair Indian Days Pow Wow: 10 a.m. – 10 p.m.
Discovery Park;
10,000 expected
Anticipate congestion in the area.

Bite of Seattle: 11 a.m. to 8 p.m.
Seattle Center
30,000 expected
Anticipate congestion in the area around the Center.

Bon Odori Festival: 3 – 8:30 p.m.
Seattle Buddhist Temple (1427 S. Main St.)
4,700;
Event will close S Main Street between 14th Avenue S and 16th Avenue S from 5 p.m. on Friday, July 16 through 11:59 p.m. on Sunday, July 18.

Seattle Sounders versus the Celtic: 12 noon – 2 p.m.
Qwest Field
45,000 expected
Anticipate congestion before and after the game in the SODO area.