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MoDOT provides update on I‑70 reconstruction and nearby bridge work
Summary
MoDOT reported ongoing I‑70 work from Warrenton to Wentzville, contractor phasing for eastbound and westbound work, a multi‑hundred‑million dollar project cost, and planned bridge replacements and overlays affecting Warren and St. Charles counties.
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A Missouri Department of Transportation representative briefed the committee on major I‑70 work in the region, including phased construction from Warrenton to Wentzville, overnight work, traffic shifts, and planned bridge replacements.
Contractors Clarkson Construction and Emery Sapp were identified as the prime teams for different project segments; the current year’s work is focused on eastbound reconstruction with an anticipated handoff to reconstruct westbound in the next construction season. Work includes shoulder and lane shifts, concrete reconstruction, bridge replacements at Truxton and Jonesburg, and asset‑management overlays in mid‑July. Message boards and an interactive work‑zone app are being used to communicate travel times and conditions.
The briefing referenced an overall project cost on the order of several hundred million dollars (the speaker cited a figure near $677 million for a broader set of improvements), and noted legislative and local contributions for specific bridges and improvements. MoDOT also reported procurement and permitting work for railroad‑adjacent projects such as the Winsfield Curve railroad bridge.
Committee members were advised to expect lane reductions, lower overnight speed limits in work zones, temporary traffic pattern changes, and ongoing public communications as work continues through 2028 and beyond for different segments. No formal committee action was taken.

