Site work for a bridge / tunnel in Isle, Minnesota. Conceptual plans call for site work for a bridge / tunnel.

MnDOT requests letters of interest to replace the box culvert over Marmon Creek along Trunk Highway 18 in Aitkin County, Minnesota. When this portion of Trunk Highway 18 was constructed in the 1930s, it bisected a large habitation and mortuary precontact period archaeological site known as the Malmo Site (21AK1). The Malmo Site (21AK1) is on the National Register of Historic Places, the State Register of Historic Places, and is a burial ground. The construction project has federal funding and the Section 106 finding for the undertaking is "No Adverse Effect." The Minnesota Indian Affairs Council (MIAC), the Office of the State Archaeologist (OSA), and the consulting tribes have all expressed concerns about displaced human remains or grave goods within the project area. All the areas of ground disturbance for this undertaking are contained within the "Cultural Resource Monitoring Area", which measures about 750 feet by 180 feet. MnDOT requests Letters of Interest for archaeological construction monitoring within the "Cultural Resource Monitoring Area". This construction monitoring will follow the plan outlined in the Cultural Resources Construction Monitoring Plan for The Malmo Box Culvert Project (SP 0102-29) Aitkin County, Minnesota (Monitoring Plan). 1. Execute the Monitoring Plan. This plan has already been developed in consultation with MIAC, OSA, and the State Historic Preservation Office (SHPO), and the consulting tribes. 2. Monitor construction for evidence of intact and significant archaeological components associated with 21AK1 or other archaeological sites. 3. Monitor construction for evidence of human remains and grave goods Prospective, pre-qualified responders who have any questions regarding this request for letters of interest must submit questions, by e-mail, to the Contract Administrator: Michael Friberg Michael.friberg@state.mn.us Questions regarding this announcement must be received, via e-mail, by the Contact Administrator identified above no later than 2:00PM Central Time on 09/15/2025. MnDOT anticipates posting answers to all questions received by 2:00PM Central Time on 09/17/2025. MNDOT: RFP Engineering - Archaeological Construction Monitoring for the Malmo Box Culvert Replacement Project