Castle Creek Channel Reconstruction and Restoration

The City of Madison is seeking a contractor to reconstruct the Castle Creek channel at Warner Park, including channel excavation and widening, storm sewer improvements, riprap placement, bridge work, and native plant restoration.

City of Madison > Engineering Division


General
Open
9585
Nov 05, 2026 08:00 PM
Oct 23, 2026 06:33 PM
Small Business
Invitation for/to Bid (IFB/ITB)
Local
Ask AI about this solicitation
Contact
rstenjem@cityofmadison.com
+16082664913
Submission Instructions
Online

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Hand delivery
Description

The City of Madison seeks a contractor for channel improvements involving removal of approximately 980 linear feet of reinforced concrete channel lining, excavation and grading to lower and widen the channel, and construction of a low-flow channel and floodplain benches. Work also includes storm sewer pipe and structure installation or modification, riprap and erosion-control measures, and restoration with native seed mixes and plantings. The contractor will protect and work around existing pedestrian bridges, temporarily relocating or disassembling portions as needed and restoring them after construction. The scope also includes tree clearing, invasive-plant control and ecological restoration through 2028, path repairs, stormwater and groundwater control, and construction-site stabilization. The bid requires City prequalification in applicable work categories, a 12% Small Business Enterprise utilization goal or documented good-faith efforts, and a 5% bid bond.

Classification Codes
NAICS237110Water and Sewer Line and Related Structures Construction
PSCZ2KZREPAIR OR ALTERATION OF OTHER CONSERVATION AND DEVELOPMENT FACILITIES
Smart Codes
channel reconstructionstorm sewer improvementsnative plant restoration
Specifications
Supply & Service
Timeline
Oct 29, 2026 07:00 PM-Pre-Bid Meeting (optional)
Virtual meeting; advance registration is required through the City Engineering Division's SBE Meeting webpage.
Oct 29, 2026 07:00 PM-Prequalification Application Due
Nov 05, 2026 08:00 PM-Bid Submission Deadline
Nov 05, 2026 08:30 PM-Bid Opening
Nov 30, 2026 06:00 PM-Contract Documents Due for Execution
Dec 14, 2026-Contractor May Begin Work
Requirements
Required
  • Bid Bond — 5%
  • Payment Bond
  • Performance Bond
Required
  • Minimum 3 references
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