Opportunity
Iowa City Community School District Bidopportunities #25-06-49-02
Bridge Demolition and Low Water Crossing Installation at Maquoketa Caves State Park
Posted
October 04, 2023
Respond By
July 23, 2026
Identifier
25-06-49-02
NAICS
237310, 237990
This opportunity from the Iowa Department of Natural Resources focuses on infrastructure improvements at Maquoketa Caves State Park in Jackson County. - Government Buyer: - Iowa Department of Natural Resources (DNR) - Engineering Section, Project Manager: Bruce Flippin; District Engineer: Michael Dufoe, P.E. - Scope of Work: - Demolition and offsite disposal of deteriorated wooden bridge, stairs, posts, and railroad ties - Installation of two low water crossings using precast concrete pig slats - Minor grading and realignment of trail, including earthwork to tie slopes to existing grades - Placement of granular subbase (32 tons) and Class A road stone (16 tons) - Site restoration, including seeding with erosion control mix and repair of disturbed areas - Installation of treated wood railing with galvanized hardware on existing landing - Products Requested: - Precast concrete pig slats (Hog Slat, Inc. Item #1230 or approved equal), 4' x 10', 4" thick, total quantity: 27 - Granular subbase, 32 tons - Class A road stone, 16 tons - OEMs and Vendors: - Hog Slat, Inc. (specified for pig slats; alternatives allowed if approved) - Unique Requirements: - Bidders must inspect the site prior to bidding - All waste must be disposed of offsite - Sensitive areas must be protected during construction - Compliance with all applicable codes and ordinances - Proposal validity for 45 days from submission deadline - Notable: No other specific OEMs are mandated except for pig slats; alternatives must be approved as equals.
Description
This project involves the removal of a deteriorated wooden bridge and stairs, including posts and railroad ties, at Maquoketa Caves State Park. It also includes the placement of low water crossings in two locations using PCC pig slats with minor grading to realign a trail. The work requires demolition, site restoration, and installation of granular subbase under the pig slats. Bids must be submitted electronically by July 23, 2026, at 3:00 PM.