U.S. Highway 18 Bridge Repair Near Winner
Project Summary:
Low slump bridge deck overlays, PCC paving and new guardrail at six structures around Winner.
18 ft width restriction on U.S. Highway 18 from S.D. Highway 44 Jct in Winner to Colome
11 ft width restriction on S.D. 49 at Hamill
Project Updates:
May 22, 2026:
Anticipated work in June 2026: The contractor is anticipated to complete the deck overlays in the westbound lanes at both structures on U.S. Highway 18, as well as the northbound lane at the Hamill structure. Once this work is finished, traffic will be shifted to the opposite lanes. The bridge decks will then be milled, and concrete repair activities will begin at all three structures.
Completed work in May 2026: This month, new barrier walls were completed on both structures on U.S. Highway 18. Bridge decks were milled, and concrete repair work was finished at all three structures. Preparatory work was also completed for the bridge deck overlays at each structure.
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April 16, 2026:
Anticipated work in April 2026: The contractor will complete concrete placement for the new barrier wall and end blocks on the bridge over Thunder Creek. Traffic will be switched to allow work on the barrier walls and bridge deck on the westbound lanes at both structures on U.S. Highway 18. Traffic control will be set up at the structure over Moccasin Creek at Hamill. Concrete repair work will begin on all three bridge decks.
Completed work in March 2026: This month, the contractor set up traffic control to begin work on the West Branch of Thunder Creek bridge and the Thunder Creek bridge on U.S. Highway 18. Crews removed the existing bridge rail and guardrail in the eastbound lanes of both structures. New barrier walls and end blocks have been built for the eastbound lane on the West Branch of Thunder Creek bridge.
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April 1, 2026:
Work is scheduled to resume on various bridges in the Winner Area beginning Monday, April 6, 2026.
Bridge repair is scheduled over the West Branch of Thunder Creek (one mile SE of Winner) and Thunder Creek (four miles SE of Winner) on U.S. Highway 18. Traffic control will be placed on both Highway 18 bridges.
Work on the bridge over Moccasin Creek (Hamill) on S.D. Highway 49 is scheduled to begin the last week of April 2026.
Project work will consist of new concrete barrier walls, concrete removal, and repair of the existing bridge decks, followed by a concrete overlay at each location. Work will be completed in phases with one lane of the bridge being worked on at a time. Traffic at each site will be reduced to a single lane across the bridge and will be controlled by stop signs. An 18-ft. width restriction will be enforced on both Highway 18 bridges and an 11-ft. width restriction will be enforced on the Highway 49 bridge. The contractor expects the work to last up to five weeks per phase.
Removal of existing bridge rail and placement of new concrete barrier walls will follow.
March 10, 2026:
Work is expected to resume on April 6, 2026, at the bridges on U.S. Highway 18 between Winner and Colome. Traffic will be reduced to one lane across the bridges and will be controlled by stop sign.