Downtown Alley Reconstruction City Hall Alley – South of 5th Street

The City of Yankton is seeking bids to fully reconstruct the downtown alley adjacent to City Hall, south of 5th Street. The work includes demolition of existing concrete and asphalt, excavation, installation of a new 6‑inch Portland cement concrete (PCC) pavement, aggregate base course, curb & gutter, sidewalks, and various utility and landscape items. The contract also requires extensive traffic‑control, erosion‑control, and environmental compliance measures, including a Storm‑Water Pollution Prevention Plan. The bid must be submitted by July 16, 2026, with the lowest responsive bid expected to be awarded. • Removal of existing concrete pavement (≈ 281 SY) and asphalt, curb & gutter, and bollards. • Installation of 6″ PCC pavement (≈ 375 SY), aggregate base, new curb & gutter (≈ 389 SY), and side‑walk elements. • Comprehensive traffic‑control (24/7), erosion‑control (silt fences, geotextile fabric, vehicle‑tracking mats), and SWPPP compliance. • Required performance and payment bonds (100 % of contract price) and a 5 % bid guarantee (cash) or 10 % bid bond. • Project completion targeted for mid‑October 2026, with liquidated damages of $650 per day for overruns.