MC26-01 Highway 151 Improvement and Cement Treated Subgrade

The Minnehaha County Highway Department is soliciting contractors to improve a 4.30‑mile segment of County Highway 151 (I‑90 to SD 42) by milling the existing surface, removing the base, cement‑treating the sub‑grade, installing a new base course, and placing a 5‑inch asphalt‑concrete composite pavement with rumble strips and striping. An alternate option permits re‑using milled asphalt in the base course. Bids must be submitted electronically via QuestCDN vBid or as sealed paper to the County Auditor’s Office by 10:15 a.m. on March 11 2026. A $22 non‑refundable fee is required to download the bid package. The county will award the contract to the lowest responsive bidder, though it reserves the right to reject any or all proposals. • Scope: mill, remove, cement‑treat subgrade, install new base, pave 5‑in. AC composite, add rumble strips & striping. • Length: approximately 4.30 mi of roadway in Minnehaha County, SD. • Submission: electronic (QuestCDN vBid, Project # 10075382) or sealed paper; deadline March 11 2026 10:15 a.m. • Required forms: county‑provided proposal form only; $22 bid‑document fee. • Alternate 1: reuse milled asphalt for base course if it meets specifications.