The campgrounds are located close to the interstate at 1260 Hwy. WW; St. Clair, MO 63077.
From Interstate I-44, Take the St. Clair exit 239 (Hwy WW/30) and turn north.  Turn left on the North Outer Service Road and go to Highway WW. 
From Highway I-70, Take the Warrenton exit 193.  Take State Hwy 47 south for 31 miles.  In Union, Mo., turn left on State Hwy 50. Go 1/2 mile and turn right on State Hwy 47 south for another 6 miles to Interstate I-44. At I-44 turn right onto the North Outer Service road and go to Highway WW. 
Turn right on Hwy WW (aka Reiker Ford Rd.).  Follow Hwy WW for 4 miles.  The campgrounds will be on the right.