Davenport Ionwave #27-14

Eastern Avenue Widening and Signal Modification Project – City of Davenport Solicitation

The City of Davenport Engineering Division is seeking bids for the Eastern Avenue Widening and Signal Modification Project, located south of the Eastern Avenue and 29th Street intersection. - Scope of Work: - Roadway widening to add a dedicated left-turn lane and a separate northbound through lane - Upgrades to traffic signals, including installation of new signals, wiring, video detection equipment, controller equipment, handholes, and related infrastructure - Concrete pavement widening, construction of sidewalks and accessible curb ramps, and replacement of driveway approach aprons - Topsoil and sod restoration, durable painted pavement markings, and erosion control measures - Products and Quantities: - Major construction materials: topsoil (13 CY), granular stabilization (78 tons), geogrid (265 SY), modified subbase (265 SY), 9" PCC pavement (198 SY), 7" PCC driveway (89 SY), 4" PCC sidewalk (16 SY), sod (117 SY) - Traffic signal modifications (1 LS), temporary traffic control (1 LS), construction survey (1 LS), and a $10,000 construction contingency - Erosion control: filter sock (300 LF), inlet protection device (1 EA), concrete washout (1 LS) - Unique Requirements: - Compliance with Iowa Statewide Urban and Design Specification (SUDAS) and city-specific supplemental specifications - Mandatory electronic bid submission - Disadvantaged Business Enterprise (DBE) participation policies - Insurance, bonding, and compliance with equal opportunity and non-discrimination clauses - Contractor responsible for all construction staking and surveying - Coordination with multiple utility providers required - Liquidated damages for late completion; monthly progress payments with retainage - No specific OEMs or proprietary products are named; solicitation is open to all qualified contractors.

Description

The City of Davenport is soliciting bids from qualified contractors for the Eastern Avenue Widening and Signal Modification Project located south of the Eastern Avenue and 29th Street intersection. The project involves widening the roadway to create a dedicated left-turn lane and a separate northbound through lane, upgrading traffic signals with new equipment, and making roadway improvements including concrete pavement widening, sidewalks, curb ramps, driveway apron replacements, topsoil and sod restoration, pavement markings, and erosion control. Bids must be submitted electronically through the City of Davenport e-bidding system by August 24, 2026. The project requires compliance with Iowa Statewide Urban and Design Specification (SUDAS) and city-specific supplemental specifications.

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