Zelienople Municipal Airport: Design-Build of Proposed Snow Removal Equipment Building Zelienople Municipal Airport: Design-Build of Proposed Snow Removal Equipment Building May 5, 2023 Widmer Engineering For full details see the main Bid page. Widmer Engineering May 5, 2023 Categories:Beaver County, Job up for bid, Website News, Widmer Engineering, Zelienople, Zelienople Municipal Airport