LAST WEEKEND TO GO TO COSTCO THE USUAL WAY: By Tuesday morning, the sign beneath the sheeting should be unmasked, to point you toward the detour that will kick in from the 1st Avenue South exit on the eastbound West Seattle Bridge – because that’s when eastbound lower Spokane Street will close 1st-5th to all but local (deliveries etc.) traffic. You’ll have to turn left on 1st at the bottom of the offramp, head to Lander, then up to 4th, and then to Costco (etc.). It’s the very first phase of work that in 3 years will result in a double-the-current-width Spokane Street Viaduct (archived WSB coverage here).

PARKING ALERT: Long stretches of California SW between Alaska and Morgan Junctions are marked by “no parking” signs in effect for today; we’ll be checking shortly on exactly what sort of road work this is for.

ANOTHER TRAFFIC NOTE: Another reminder, the eastbound Fauntleroy end of The Bridge will have the outside lane blocked off for the West Seattle Gateway Cleanup most of the day today (hundreds of volunteers; not too late to join them, here’s how).

SPEAKING OF VOLUNTEERS: The volunteer hours and donated $ that communities contribute to city Neighborhood Matching Fund-assisted projects are celebrated today in an NMF 20th-anniversary open house at Youngstown Arts Center, 10 am-2 pm.

IT’S COOKIN’ ON ALKI: Only a couple tents were set up as of late last night but lots more should be showing up this morning for the weekend-long Evergreen State Barbecue Championships along the Alki promenade. More here (including a famous food-seller!).

CLEAN CARS FOR A CAUSE: Latest fundraising car wash – West Seattle High School girls’ volleyball team, 10 am-2 pm at the WSHS parking lot.

BONAFIDE BELL-RINGING: With a month and a half to go till the election, your doorbell’s going to start ringing a lot. Today, it just might be the folks trying to rev up support for the Sound Transit ballot measure, “Mass Transit Now”; they’re gathering at midmorning in Morgan Junction to launch a round of West Seattle canvassing.

Much more – live music! live theater! plant sale! rummage sale! fish-b-q! — in the West Seattle Weekend Lineup; here’s a quicklink to today’s events.