ST. CHARLES COUNTY, MO – October 19, 2026 (STL.News) Ramp Closing – St. Charles – Drivers traveling through St. Charles County should prepare for a significant traffic change as the Missouri Department of Transportation (MoDOT) begins a scheduled 30-day closure of the ramp connecting westbound Interstate 64 to eastbound Interstate 70. The closure affects Exit 1B at the I-64/I-70/U.S. Route 61 interchange near Wentzville. Originally scheduled to begin October 12, the closure was postponed until Monday, October 19. The work is part of the $600 million Improve I-70: Warrenton to Wentzville project, which includes reconstruction of the interchange and
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