Lambert St. Louis International Airport (STL) : Head Southwest on Formosa Road to Edwardsville Road. Turn left to merge onto I-55 N. Take exit 20B to merge onto I-270 West towards Kansas City. Once on I-270 West, travel 23.7 miles to exit 26A for I-170 S. Travel for 2.7 miles to take exit 7B to I-70W. Travel .7 miles to take exit 238A to Lambert/St. Louis Airport.
Travel on I55 S to Troy Take exit 18.
via I255 N and I55 N I70E
Follow I255 N and I55 N I70 E to Troy Take Exit 18 from I55 N I70 E
Travel on I70 W to Troy Take exit 18 from I55 S I70 W
Travel on I270 E to Troy Take Exit 18 from I55 S I70 W