# Lewis Opengov #CMP 2653

Engineering and geotechnical design services for the Davis Lake Road slide repair

**Posted:** October 08, 2026
**Respond By:** November 13, 2026
**Identifier:** CMP 2653
**NAICS:** 541330

Lewis County is seeking engineering and geotechnical consulting services to develop a permanent repair for the Davis Lake Road slide near milepost 1.67.
- **Buyer:** Lewis County Public Works—Roads; project RFQ CMP 2653, also identified as Federal Aid project ER-2602(004).
- **OEMs and vendors:** No OEMs, product vendors, or specific consulting firms are named. Referenced public entities include the Washington State Department of Transportation (WSDOT), Washington State Department of Ecology, DAHP, and the U.S. Army Corps of Engineers (USACE).
- **Requested services:** Site investigation and historical research; at least two drilled borings, assumed to be 40 feet deep or less, with samples collected every 2.5 feet; subsurface analysis, a geological cross-section, a geotechnical report, and earthwork recommendations.
- **Repair concepts:** Develop three alternatives with probable cost estimates. Examples include weighted toe support, a cantilevered soldier pile wall, and a soldier pile wall with tiebacks; other suitable options may be considered.
- **Design deliverables:** Develop the County-selected alternative through 60%, 90%, and 100% plans, specifications, and estimates, including geotechnical details, special provisions, quantities, cost estimates, and a final geotechnical report. Plans must follow the Lewis County CADD Standards Manual and applicable standards and permitting requirements.
- **Additional work:** Conduct a cultural resources survey for the selected design, assuming up to 30 shovel probes, and prepare draft and final reports. Provide project coordination, quality assurance and quality control, progress schedules, and monthly coordination meetings.
- **County-provided information and access:** Lewis County will provide right-of-way and topographic survey data and obtain private-property right-of-entry agreements. Construction archaeological monitoring or future construction-phase support may be added separately.

### Description

Lewis County seeks qualifications from consulting firms with geotechnical analysis and structural design expertise for a permanent roadway slide repair. The work includes site investigation and drilling, geotechnical analysis, and conceptual plans and cost estimates for three repair alternatives. The selected alternative will be developed through final plans, specifications, and estimates for construction advertisement, alongside a cultural resource survey and project coordination. The anticipated agreement is approximately 18 months, with options to extend or supplement it for future services.

[View original listing](https://procurement.opengov.com/portal/lewiscountywa/projects/311620)