the muck creek/tank bridge area of nisqually is on Ft Lewis but it is not on the restricted access part. although the tank bridge stays locked, you can just walk across it, you hafta go through yelm to get to the river from that side. from ft lewis, you just come on post from spanaway toward the east gate, right before you get to the gate there is a C-5 aircraft mock-up on your right, take a left there and that road will take you all the way to the bridge you will see the range signs as you go, 81, 89, 90-94, you will also pass lewis lake(which has no fish in it, it's infested with salamanders that eat all the fish eggs) you only need a range pass if you intend to hunt on an actual range, lots of guys pheasant and deer hunt out that way. at the first Y in the road stay left toward the drop zone and your golden, oh yea if you come from the yelm side don't be fooled, the gate IS locked, i have seen countless people having to reverse all the way back off the bridge, good luck!