Description
The City of Ann Arbor is seeking a qualified contractor to restore approximately 158 ft of Liberty Street Creek and associated drainage infrastructure. The work includes creek clean‑out, removal of existing concrete walls, installation of toe‑wood bank stabilization, placement of rip‑rap, cross‑vanes, constructed riffles, extensive native‑plant landscaping, tree removal and re‑planting, and comprehensive erosion‑ and sediment‑control measures. The contract also requires a one‑year landscape‑maintenance warranty (with an optional second‑year warranty) and compliance with prevailing‑wage, living‑wage, and non‑discrimination statutes.
• Creek clean‑out, wall demolition, earthwork, and in‑stream structure installation (cross‑vanes, riffles, ledge rock).
• Bank stabilization using toe‑wood, rip‑rap, and native vegetation (≈ 2,300 sq yd seed mixes, 1,110 native plant plugs, 91 trees).
• Full erosion‑control package (silt fence, sediment traps, mud mats) and post‑construction site restoration within 7 days of work completion.
• Mandatory documentation: prevailing‑wage, living‑wage, conflict‑of‑interest, non‑discrimination declarations, bid security (5 % of bid), performance and labor‑material bonds, and insurance minimums.