From highway 255 (270) exit onto Telegraph Rd and turn North. Drive almost exactly 3.0 miles to the park entrance on the right, do not veer left when Telegraph Rd. deviates to the left. Stay straight and the road will transition into Kingston Dr. After you have traveled 3.0 miles from the highway, you will see Jefferson Barracks County Park entrance on the right. Enter here, pass through the stone gate, and make the first (Gark Rd.) or second (CCC Rd) left to get to the encampments.
There is plenty of free parking is available.