Shawnee County Shawnee #053-26

Bridge, roadway, guardrail, and erosion-control construction at NW 78th Street over Halfday Creek

Shawnee County is seeking a contractor for bridge and roadway improvements at the NW 78th Street Bridge over Halfday Creek. - Government buyers: Shawnee County, Kansas, Department of Public Works; Kansas Department of Transportation is also identified in the project plans. - Project: S-121061.00 (OSN 182), including grading, surfacing, bridge construction, erosion control, seeding, and traffic control. - Major construction quantities: 3,326 cubic yards of common excavation; 1,430 tons of HMA, commercial grade, Class A, mix designation (8); and a 36-48-36-foot reinforced-concrete haunched slab bridge with a 30-foot roadway. - Plan quantities: 100 feet of steel plate guardrail across four 25-foot runs and four end terminals. Approved terminal options include SRT, FLEAT, and SKT; the plans do not make a specific manufacturer mandatory. - Seeding and erosion control: 1.99 acres of seeding; 318.4 pounds of 15-30-15 fertilizer; specified grass seed mixes; 4 tons of mulch; 330 feet of silt fence; 125 feet of 9-inch biodegradable log; 250 feet of 12-inch biodegradable log; and 213 feet of rock ditch check. - Services and controls: 40 SWPPP inspections and 40 water pollution control manager units; SWPPP design is also required, with quantity not legible in the source. - OEMs named in plan references: Road Systems and Trinity Industries are referenced for guardrail terminal systems. These references do not establish a required source or selected supplier. - Other named organization: Cook, Flatt & Strobel Engineers PA is identified as the design engineer. - Performance: Work is to start within a specified early-2027 window. Substantial completion is due 150 calendar days after the Construction Work Order, with final completion and acceptance due 7 days later.

Description

Shawnee County is soliciting bids for grading, surfacing, bridge construction, and seeding for the NW 78th Street Bridge over Halfday Creek (Project S-121061.00, OSN 182). Major work includes constructing a reinforced concrete haunched slab span, 3,326 cubic yards of common excavation, and 1,430 tons of HMA. Bids are due through the Shawnee County bid portal by December 9, 2026, at 2:00 PM local time. Bids must include security of at least five percent of the bid amount, including alternates.

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