Site Visit Effigy Mounds National Monument

The National Park Service intends to solicit a request for proposals on or around October 20, 2026, for rehabilitation of the Visitor Center and parking and maintenance areas at Effigy Mounds National Monument in Harpers Ferry, Iowa, with no set-aside. A mandatory pre-proposal site visit is scheduled for October 21, 2026, from 0800–1100 CST; RSVP is required by October 16, 2026, at 2:30 pm MST to stormy_gallagher@ios.doi.gov.

Visitor Center work includes selective demolition and hazardous materials removal, installation of new HVAC, electrical, fire alarm, and fire suppression systems, structural modifications, new roofing and insulation, relocation of restrooms with new plumbing and electrical fixtures, elevator maintenance, new drainage systems, and construction of a new building approach and visitor plaza. Parking lot and maintenance area improvements encompass vehicle and pedestrian circulation, drainage improvements, new asphalt paving with curbs, gutters, and sidewalks, parking lot island redesign with visitor-use areas including benches and picnic tables, and improvements to park staff maintenance areas.

The anticipated period of performance is 450 calendar days. Work must minimize visitor impact as the park will remain open during construction. Bid, performance, and payment bonds will be required. The project is classified under NAICS Code 236220 (Commercial and Institutional Building Construction) with a small business size standard of $45 million. Draft specifications and drawings are attached; final documents will be provided with the RFP in late October. The solicitation number is 140PP027R0001.