I used to fish Upper Riffe all the time growing up. Know that bridge QUITE well. Remember when you could ONLY fish it on weekends (the fishing bridge wasn't even thought of then, and logging trucks would barrel over it during weekdays). The old Red Zone for Mt St Helens was on the south side of the bridge. You could fish on it, but if you touched the road on other side there was a sheriff there to arrest you. What sucks is I used to camp for free where that park is now. Rarely anyone camped there in the 70's and 80's. Not sure when they put that park in. But remember my buddy came over from Germany and wanted to see the area I used to fish/camp. Took him up there and there was a park (was about 91'). Then, went to take him out on the peninsula (would 4x4 out to it all the time) and it was LOCKED OFF!!! One of the biggest trout I've caught was off that bridge. Actually had to horse it over and land from the shore (not hoist up to bridge). Was an 8# rainbow (not a landlocked salmon, but a nice fat bow'). That park is no secret now. Man, can't believe how they ruined a good spot. Liked the more rustic feel. Now there's a fishing bridge and a campground. Then they had nerve to shut off road access to upper Cowlitz (used to be nice flyfishing only water there years ago). Couldn't get my 4x4 through the trench they put up there. Sheesh.