Mendota Grassman Greenway Flood Mitigation and Restoration Design

The City of Madison Engineering Division is seeking a design consultant or team to develop comprehensive design solutions for the Mendota-Grassman Greenway Flood Mitigation and Restoration project, located on Madison's west side from Old Middleton Road to Lake Mendota. The primary objectives are to enhance water conveyance capacity and reduce flood impacts in areas experiencing repeated flooding since 2016, particularly after extreme precipitation events. Key deliverables include developing design drawings at 30%, 60%, 90%, and final design phases, preparing permit applications, conducting public outreach with a minimum of two public information meetings, and supporting the bidding process. Proposals were due by September 11, 2020, at 4:00 PM CST, with electronic submissions to Jojo O'Brien. The project timeline anticipated consultant selection on September 23, 2020, with a project start date of October 12, 2020, and completion by November 22, 2021. Consultants must submit detailed cost proposals organized by task, including estimated hours by position, billing rates, reimbursable expenses, and meeting costs, and demonstrate relevant project experience from the past ten years.

The City will provide existing data including XP-SWMM watershed models, topographic surveys, tree quality assessments, wetland delineation reports, and historic flooding data. Contractors must comply with the City's Standard Terms and Conditions, including maintaining specific insurance coverages: Commercial General Liability ($1,000,000 per occurrence), Business Automobile Liability ($1,000,000 combined single limit), Workers' Compensation, and Professional Liability insurance ($1,000,000). Non-exempt contractors with 15 or more employees must file an approved Affirmative Action plan. The project budget allocates more than $100,000 for design and permits, with construction and restoration budgeted between $1 million and $1.25 million, excluding potential University Avenue culvert replacement costs. Contractors must be prepared to handle data procurement, sediment sampling plans, critical elevation surveys, and potentially support land acquisition efforts. The project is part of Madison's broader flood management program addressing increased extreme weather events and climate change impacts, with potential for a multi-package bid approach depending on budget constraints.