Request for Proposal for San Miguel County Road 58P Retaining Wall Construction

San Miguel County is requesting proposals for the design and construction of a mechanically stabilized earth (MSE) retaining wall on a portion of County Road (CR) 58P located north of the Town of Sawpit, Colorado.

San Miguel County is seeking qualified contractors to design and construct a mechanically stabilized earth retaining wall to stabilize a roadway embankment along CR 58P. The project area includes existing infrastructure such as guardrail and utilities, which must be considered during design and construction.

Due to site constraints, minimizing disturbance and material loss is a priority. The selected solution should provide long-term roadway stability while maintaining a low-profile wall design.

The selected contractor shall provide full design, engineering, permitting support (if required), and construction services for the retaining wall. At minimum, the scope includes:

• Design of a mechanically stabilized earth (MSE) retaining wall system
• Construction of a low-profile retaining wall supporting a roadway width of at least 20 feet
• Structural design calculations prepared and stamped by a Professional Engineer licensed in the State of Colorado
  1. Detailed engineering drawings including:
  2. Wall geometry and dimensions
  3. Anchoring and reinforcement systems
  4. Drainage components (if applicable)
  5. Full material specifications and quantities
  6. Construction planning and execution, including:
     1. Mobilization and demobilization of personnel, equipment, and materials
     2. Construction sequencing and schedule
     3. Site safety and access management
  7. Traffic control plan due to roadway location and constrained width conditions
  8. Identification and mitigation of impacts to existing utilities and guardrail infrastructure
  9. Minimization of site disturbance and excavation
  10. Any required rock removal, if encountered, must be performed using non-explosive methods only, clearly described in the proposal
  11. Final deliverables shall include:
      1. Stamped engineering plans
      2. Construction schedule
      3. Traffic control plan
      4. Materials list and specifications
      5. As-built documentation upon completion

• RFP Issued April 27 ^th , 2026
• Pre-Bid mandatory on site meeting on May 7 ^th at 1:00 PM Mountain Time (Site location approximately 0.5 miles north of the town of Sawpit on County Road 58P)
• Questions Deadline on May 14 ^th , 2026 at 5:00 PM Mountain Time
• Questions Response deadline, May 19 ^th , 2026 at 5:00 PM Mountain Time
• Proposal Due by May 26 ^th , 2026 at 5:00 PM Mountain Time
• Notification of Selection (Tentative) May 28 ^th , 2026, 4:00 PM Mountain Time
• Contract (Tentative)
• Project Kickoff (TBD)
• Project completion October 15 ^th , 2026.

All dates are subject to change at the discretion of the County.

Inquiries or questions on the contents and requirements of the RFP will be accepted in written electronic form only. Inquiries can be emailed to the attention of: Ryan Righetti to For security reasons, you must enable JavaScript to view this E-mail address. using the subject line “CR 58P Retaining Wall RFP Questions”. The deadline for inquiries is May 6 ^th at 4:00 PM Mountain Standard Time, after which no further inquiries will be addressed.

Substantive requests for information received may be responded to in writing by the County in the form of an addendum to this RFP and sent to all recipients of the RFP.