MoDOT to close I-70 STL Airport entrance Monday night Posted on October 12, 2020 in Media Releases Missouri Department of Transportation (MoDOT) crews will close the westbound I-70 exit ramp to Lambert International Blvd. and STL Airport (exit 238A) on Monday, Oct. 12, from 8 p.m. to 6 a.m. on Tuesday, October 13. During that time, MoDOT crews will conduct maintenance repairs on the entrance. Drivers needing to get to St. Louis Lambert International Airport during this closure are encouraged to use STL Airport (exit 236) as an alternative route.