From South County & J.B. Bridge & Columbia, IL

255 North to 270 West to Rt. 3 North to 143 West (left exit).  Stay on 143 West for approx. 6 miles. This will take you in front of the Argosy Alton Casino to a 4-way stoplight.  At the light turn left (west) onto Rt. 100 (Great River Road).  Follow Hwy 100 approx. 12 miles to the park.  We are located on the right side of the highway, just inside the Grafton city limits.