Description
The Navajo Division of Transportation is soliciting proposals for a comprehensive road‑improvement contract on the N8066 corridor (segments 1, 2, 4) across Black Mesa, AZ. The work includes full earthwork, drainage, base and asphalt pavement installation, concrete arch‑culvert placement, fencing, cattle‑guards, gates, signage, pavement markings, utility water‑line relocation, erosion control, and associated construction‑management services. The contract is fixed‑price, requires at least 50 % self‑performance, adherence to Federal Specification FP‑14, Davis‑Bacon wage rates, Buy‑America compliance, and a 6 % Navajo Nation sales tax. The successful bidder must provide a certified field laboratory, meet a 76,800 lb truck weight limit, and supply all necessary bonding and insurance.
• Roadway construction: grading, sub‑grade stabilization, aggregate base, and Class B asphalt pavement.
• Structural work: precast concrete arch culverts, concrete headwalls, wingwalls, and articulated concrete block revetments (with possible 35 lb/ft² substitution).
• Supporting systems: drainage structures, water‑line relocation, fencing, cattle‑guards, gates, signage, and erosion‑control measures.