Hmm directions might be a problem i just know how to get there, You go through a little trailer park then your up on the levey and you just follow it down.
If your coming out of marysville towards sac right when you cross the bridge and the track is to your left under you, you make your first exit and you go under the freeyway to a stop sign. Make a left and go all the way until your about to merge back onto the freeway going back into marysville on the bridge, Right before you get on there is a little road into a trailerpark just go on the levey from there.