Directions from St. Louis Lambert International Airport (http://www.lambert-stlouis.com) to OSM's Mid-Continent Region Office in Alton, IL:

• From the Airport take Interstate 70 East. Immediately get into far left lane.
• Exit left onto Interstate 170 North. Go approximately 3 miles.
• Exit right onto Interstate 270 East. Go approximately 6 miles.
• Exit right onto Highway 367 North. Go approximately 10 miles across the Lewis and Clark Bridge at Alton.
• At the "T" in the road, turn left (after crossing the bridge
  to Alton) onto Landmarks Blvd.
• Go approximately 1 mile to 3rd stoplight (cross street Broadway).
• Go straight, on Piasa (Highway 67) .
• After 4 blocks turn left onto 6th Street (just past the Federal building).
• Turn left into the parking lot behind the Federal building.