Murphsmom wrote:
You would also be only about 80 or so miles from Lewis and Clark Caverns State Park, just off I-90.
http://stateparks.mt.gov/lewis-and-clark-caverns
Definitely recommend the above!! If you only need an overnight CG in Deer Lodge and don't want to unhook, there is a CG right off the interstate, and I THINK it is called simply Deer Lodge CG. Right next door is a restaurant, the Four B's. Best tomato soup I've ever had anywhere.
On edit: It's called Indian Creek CG. Glorified parking lot with grass, but inexpensive (at least it was in 2009) with full hookups.