I think that the bridge I was thinking of is not actually alongside of HWY 2, I think it's the one that is west of I-5 just north of HWY 2, and crosses one of the sloughs there. I would guess it's not a secret to the guys above talking about Ebey and Steamboat.

As far as sturgeon spawning in rivers other than the Sac, Col, and Fraser, this question is outside my league. It would seem to me with all the salmon in the Snohomish system, as well as the Stilly and Skagit, that there would be plenty of food there to support a spawning run. It may be interesting to note, however, that the rivers you mentioned as having spawning sturgeon also have smelt and/or shad runs, while those Puget Sound systems do not, or at least nothing like the others. I know that both shad and smelt can be good bait, so they must eat them. Someone with a better knowledge of sturgeon behavior should jump in, I'm kind of interested now.

I've fished the Columbia around Trojan, and we used big smelt with a 5/0 barbless hook. The smelt was tied onto the hook with the #80 dacron line we used as leader. If you left the rod in the rod holder until it really started to bend, the fish seemed to hook themselves, and few were missed. However, it seems to be pretty standard to catch one keeper for every 20 or 30 shakers. I've heard they're doing quite a bit better than that up near Bonneville right now.

Good luck. Fish on...
Todd.