GAOA Mesa Falls Rec Area Retaining Wall in Caribou-Targhee NF

The Caribou-Targhee National Forest, through the USDA Forest Service Region 4, is soliciting bids on repair and rehabilitation of a historic stone retaining wall at the Mesa Falls Grandview Overlook under a total Small Business Set-Aside (NAICS 238140 – Masonry Contractors), with proposals due September 3, 2026.

This is a Small Business set-aside — only small businesses as defined under NAICS 238140 are eligible.

The scope covers three primary phases: removal and repointing of failed mortar joints on the existing CCC-era stone retaining wall; replacement of missing historic lava stone and pinning pieces; and fabrication and installation of a columnar basalt wall cap across the entire 60-foot length. All repairs must match original CCC-era materials and techniques and comply with the Secretary of the Interior's Professional Qualification Standards for Historic Architecture. The contractor must demonstrate successful completion of comparable historic masonry rehabilitation projects and must perform work under direct supervision of a qualified historic preservation specialist. Submittal requirements include product data, shop drawings, samples, a detailed Construction Schedule (due within five days of commencement), a Contractor Quality Control Plan, and a Historic Treatment Program detailing methods and materials — each subject to Contracting Officer approval with 14-day review periods. Work must comply with OSHA silica dust standards and hand-tool finishing specifications prohibiting visible grinder or saw marks on final stonework. Mobilization and incidental costs are included in line-item bids rather than paid separately.

The estimated contract value is $30,000 to $40,000. The base bid duration is 60 days with a start date to be determined. The site is located in Fremont County, Idaho, with occupied work areas and public presence; utilities are unavailable but government toilet facilities are provided. Work is weather-dependent and requires protective curing procedures for mortar joints.