Coming from northern Illinois

Directions to Principia College coming from northern Illinois on I-55

Proceed south on I-55, take the IL-140 exit, exit number 30, towards Alton.
Stay on IL-140 until it ends in Alton, and then take a right on Broadway.
Go through the center of Alton, and stay on W. Broadway, which turns into IL-100.
Proceed along the "River Road" IL-100 to the Elsah exit 11 miles
Go on Mill Street to the intersection of Maple Street 1 mile
Go right at the stop sign on Maple Street, up the hill 1 mile
Go right at the entrance to Principia College. Check in at the gatehouse. Park in the first parking lot on the right. 1/3 mile
Proceed in the same direction by foot along the road to the Science Center on the left. ¼ mile