PROJECT SPOTLIGHT | TRANSPORTATION INFRASTRUCTURE

A major highway project is also a daily exercise in keeping a region functioning.

That challenge is coming into focus again on the Improve I-70: Warrenton to Wentzville project, where MoDOT’s latest construction notice outlines early-October traffic changes between the Foristell weigh station and Wentzville Parkway.

The notice schedules a westbound traffic shift for October 6 and a 30-day closure of the David Hoekel Parkway westbound entrance and exit ramps. All work is weather permitting, and schedules may change.

A Regional Investment With Daily Impacts

The $600 million design-build project covers approximately 20 miles of I-70, with construction anticipated to finish by the end of 2028. Its scope includes additional highway capacity and improvements to pavement, bridges and interchanges.

MoDOT’s notice says two lanes will be maintained during peak travel periods, with nightly westbound right-lane closures during construction. Those commitments highlight an important project-delivery challenge: creating enough space to build while preserving access for the people and businesses using the corridor.

The Construction Lesson Beyond the Highway

For Greater St. Louis owners, designers and contractors, this is a useful example of how temporary conditions become part of project delivery.

A facility renovation, campus expansion or industrial project can face a similar problem. Construction must advance while employees arrive, deliveries continue and existing operations remain accessible.

Teams planning work around active operations should consider:

  • Access at every phase: Identify how employees, visitors and deliveries will reach the site as work areas change.
  • Delivery coordination: Review routes and arrival windows before a closure affects a critical shipment.
  • Temporary conditions: Include signage, barriers and alternate circulation in planning discussions.
  • Clear communication: Assign responsibility for notifying affected users when the sequence changes.
  • Schedule flexibility: Establish how weather or field conditions will trigger updated instructions.

These are planning considerations, rather than findings about the I-70 team’s internal practices. But the parallel is clear: a construction schedule must account for the users who depend on the space around the work.

As the region follows I-70’s progress, the project offers more than a view of new pavement. It offers a reminder that maintaining access is itself a significant part of building infrastructure.