Cedar Rapids Ionwave #6255001-02 Addendum 1

Cedar Rapids Seeks Bids for 7th Avenue at Cedar River Water Main Improvements

The City of Cedar Rapids Utilities Department is seeking bids for the 7th Avenue at Cedar River Water Main Improvements project, a major infrastructure initiative to install a new 16-inch ductile iron water main across the Cedar River and replace the existing main at the 8th Avenue Bridge crossing. - Government Buyer: - City of Cedar Rapids Utilities Department - Project Scope: - Installation of a 16-inch ductile iron water main (DIP, Class 52 and Class 55, zinc coated, restrained joint, owner supplied) across the Cedar River by open cut - Replacement of the existing 16-inch water main at the 8th Avenue Bridge crossing - Associated work includes pipe fittings, valves (gate, butterfly, tapping), fire hydrant assemblies, pavement and curb restoration, storm and sanitary sewer work, erosion and sediment control, temporary causeway construction and removal, contaminated soil and groundwater management, vibration and noise monitoring, and site restoration - Products and Quantities: - Over 1,000 linear feet of 16-inch DIP water main (owner supplied) - 2,419 lbs of pipe fittings by weight, 2 oversized caps (16") - Multiple valves: 6" gate valve (1), 16" butterfly valve (1), 16"x12" tapping valve assembly (1) - Fire hydrant assemblies (2), valve boxes and extensions - Pavement (887 SY, 9" PCC), curb and gutter (206 LF), storm sewer (60 LF, 15" HDPE) - Temporary causeway (installation and removal), temporary roadway surface (328 SY, 6" PCC) - Environmental controls: floating silt curtain (527 LF), filter socks, silt fence, contaminated soil and dewatering fluid handling - Site restoration: hydraulic seeding (multiple types, over 3,000 SY), sod (1,128 SY), signage, fencing - Services: - Compaction testing, construction survey, disinfection and hydrostatic testing, SWPPP management, vibration and noise monitoring, maintenance of emergency access, environmental testing and disposal services - Unique/Notable Requirements: - All water main pipe and fittings must use nitrile gaskets - Strict environmental controls due to identified soil and groundwater contaminants (PAHs, arsenic, cyanide, VOCs) - Compliance with Iowa DNR floodplain permits and Cedar Rapids Supplemental Specifications to SUDAS - Temporary causeway and boat ramp construction for river access - Incentive/disincentive payments for milestone and final completion - Project is exempt from Iowa state and local sales and use taxes - Owner-supplied materials for certain pipe and valve items - No specific OEMs are named; ductile iron pipe and fittings are specified by material and standard, not manufacturer - Estimated contract value: $2,560,000 to $2,610,000 - Open to all qualified bidders; unit price bid structure

Description

This solicitation is for the installation of a 16-inch ductile iron water main across the Cedar River by open cut installation at 7th Avenue. The project involves replacing the existing 16-inch ductile iron water main at the 8th Avenue Bridge Cedar River Crossing, located from Valor Way SW, across Cedar River, to 1st St SE. The engineer's opinion of probable cost is $2,610,000. Key milestones include completing construction, disinfection, hydrostatic testing, and connection of the water main by February 26, 2027, with final completion by April 30, 2027.

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