Lane And Ramp Closures On Eastbound I-55/70 iIn St. Clair County Begin On May 4, 2026

IDOT said eastbound I-55/70 will be reduced to two lanes between Illinois 203 and Exchange Avenue, and the westbound I-64 ramp to eastbound I-55/70 will close through early May 6.

Dawn Johnson, IDOT Communications

May 3, 2026 8:15 AM Save

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MADISON – The Illinois Department of Transportation today announced upcoming lane closures on eastbound Interstate 55/70 in St. Clair County to allow for bridge maintenance.

Beginning at 6 a.m. Monday, May 4, traffic will be reduced to two lanes on eastbound I-55/70 between Illinois 203 and Exchange Avenue.

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In addition, beginning at 6 a.m. Monday, May 4, the ramp from westbound I-64 to eastbound I-55/70 will be closed.

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All lanes, including the ramp, are expected to reopen by 6 a.m. Wednesday, May 6.

Motorists should expect long delays and are encouraged to use alternate routes during this closure. Drivers are urged to reduce speed, be alert for changing conditions, obey all construction signage, and refrain from using mobile devices while approaching and traveling through the work zone.

For IDOT District 8 updates, follow us on the social media platform X at @IDOTDistrict8 or view area construction details on IDOT’s traveler information map on GettingAroundIllinois.com.