Davenport Ionwave #26-64 Addendum 1

Western Avenue Reconstruction Project (W 28-1/2 Street to W 31st Street) – City of Davenport, Iowa

The City of Davenport, Iowa is seeking bids for the Western Avenue Reconstruction project, spanning from W 28-1/2 Street to W 31st Street. - Government Buyer: - City of Davenport, Iowa - Offices involved: City Engineer, Purchasing Division, City Hall - Scope of Work: - Complete roadway reconstruction - Installation of ADA-compliant sidewalks and ramps - Integrated curb replacement - Resetting utility surface features to finish grade - Replacement of driveway approach aprons - Topsoil placement, sodding, and erosion control - Storm sewer installation and removal - Traffic control, signage, and construction survey - SWPPP (Storm Water Pollution Prevention Plan) management - Owner contingency allowance for unforeseen expenses ($50,000) - Products and Quantities: - Topsoil (95 CY), granular stabilization (715 TON), geogrid subgrade treatment (1027 SY), modified subbase (4570 SY) - Storm sewer (RCP, 15", 111 LF), removal of storm sewer (12", 117 LF), subdrain (845 LF), sump drain connection (1 EA) - Manholes (SW-303, 60" dia., 4 EA; SW-401, 60" dia., 1 EA), intakes (SW-501, 4 EA), manhole adjustment (1 EA), removal of manholes (5 EA), removal of intakes (4 EA) - PCC pavement with integral curb (7", C-SUD, 4108 SY), sidewalk removal (481 SY), driveway removal (38 SY) - PCC sidewalks (4", 1822 SF; 6", 328 SF; 8", 701 SF), PCC sidewalks with integral curb (4", 1692 SF; 6", 430 SF) - Detectable warning panels (260 SF), paved PCC driveways (7", 63 SY) - Temporary traffic control (1 LS), traffic signs (84 SF), perforated square steel tube posts (165 LF) - Sod (842 SY), erosion control (1 LS), construction survey (1 LS), mobilization (1 LS) - Services: - Construction survey, mobilization, SWPPP management, erosion control, temporary traffic control, contingency for unforeseen work - Unique/Notable Requirements: - Compliance with Iowa SUDAS and City of Davenport supplemental specifications - Coordination with multiple utility companies - ADA compliance for sidewalks and ramps - Submission of bid bond (5% of bid amount) and certificate of insurance - Equal opportunity employment clauses - Liquidated damages for late completion - OEMs and Vendors: - No specific OEMs or product manufacturers are named; opportunity is open to qualified construction contractors - Estimated Contract Value: - Engineer's estimate: $621,000 - Place of Performance and Delivery: - Western Avenue from W 28-1/2 Street to W 31st Street, Davenport, IA - City Hall and City Engineer's office as government facilities - Period of Performance: - Anticipated start no earlier than August, completion required by November (approx. three months duration) - Monthly progress payments with retainage; owner contingency allowance included

Description

The City of Davenport is soliciting bids for the Western Avenue Reconstruction project, which involves furnishing all labor, materials, and equipment necessary to reconstruct the existing roadway, ADA sidewalks and ramps, integrated curb replacement, resetting existing utility surface features to finish grade, replacement of driveway approach aprons, topsoil, sodding, and erosion control. Bids must be submitted electronically through the City of Davenport e-bidding system by May 21, 2026. The project requires compliance with the Iowa Statewide Urban and Design Specification (SUDAS) and includes various contract conditions, insurance requirements, and bonding provisions.

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