ASCE national historic civil engineering landmark award nomination package, 2019, for the Portage Lake Bridge. The package was compiled by Michael Prast and Emma Beach with Dr. Tess Ahlborn of the Civil, Environmental, and Geospatial Engineering Department at Michigan Technological University. Included are nomination letters from ASCE Michigan section president, Christopher Owen, and the authors to the ASCE History & Heritage Committee; as well as the official nomination form and 10 sections outlining the history of the bridge, its significance, and references. Supporting documentation consists of copies of historic images, documents, correspondence and other material. The collection also includes one commemorative coin from the 2022 dedication of the bridge following the successful application for designation.