Harmon Tunnel Highwall Scaling Services

The State of Iowa is seeking bids for rock scaling services for the Harmon Tunnel highwall at Pammel State Park in Madison County.

Natural Resources, Dept Of


General
Open
26-04-61-02
Jun 25, 2026 03:00 PM
Jun 11, 2026 04:24 PM
1 year
Request for Proposal (RFP)
State
Contact
Darin Galbraith
constructionbids@dnr.iowa.gov
+15153440055
6200 Park Avenue, Des Moines, IA, USA
Submission Instructions
Email
Description

This solicitation is for rock slope scaling services at the Harmon Tunnel highwalls in Pammel State Park, Madison County, Iowa. The work involves removing loose bedrock fragments and talus above and around the tunnel portals within a specified zone of influence. Blasting is strictly prohibited. All spoil and loose material within the zone of influence and between it and the tunnel pavement must be removed and disposed of. Key requirements include the submission of a detailed project Work Plan ten working days prior to commencement. This plan must outline the schedule, equipment to be used, qualifications of personnel, crew structure, material control and removal strategy, traffic control plan (closure of the tunnel is expected), and an emergency management plan. Protection of adjacent roadways, historic tunnel elements, and the environment are critical. Personnel qualifications require each rock slope scaling foreman and all personnel to have performed satisfactory work on three similar projects within the last five years, with a minimum of two years of full-time experience in rock slope stabilization that includes rock scaling.

Classification Codes
NAICS237990Other Heavy and Civil Engineering Construction
PSCF011Surface Mining Reclamation Services (non-construction)
Smart Codes
rock slope scalinghighwall scalingdebris removal
Specifications
Service Only
Yes
Requirements
Required
  • Public Liability Insurance — $250,000.00
  • Property Damage Insurance — $500,000.00
Required
  • Performance Bond
Required
  • Minimum 3 references
  • Within the last 5 years
Documents
TitleDate Posted
c2604b6d-49c5-4109-b807-8056567e729eJun 11, 2026 03:27 PM
22e2de8d-150c-4e58-a73a-879d210ffe1aJun 11, 2026 03:27 PM
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