Description
The Navajo Division of Transportation is seeking a qualified contractor to perform comprehensive roadway improvements on the N8066 corridor (segments 3‑1, 3‑2, and 3‑4) across approximately 6.92 mi of Black Mesa, Arizona. Work includes full‑depth earthwork, sub‑grade stabilization, aggregate base and asphalt paving, installation of multiple drainage structures (pre‑cast concrete arch culvert, pipe culverts of various diameters, concrete box culverts), utility relocation/encasement, fencing, gates, signage, pavement markings, and erosion‑control measures. The contract is a fixed‑price, sealed‑bid RFP funded by the FHWA Tribal Transportation Program and subject to Navajo Nation regulations (Buy‑America, Davis‑Bacon, 6 % Navajo sales tax, etc.). The project must be completed within roughly 300 working days after the notice to proceed.
• Roadway construction: grading, sub‑grade treatment, base course, and asphalt pavement.
• Drainage & structures: concrete arch culvert, multiple pipe culverts, concrete box culverts, riprap, gabions.
• Utilities & ancillary work: relocation of 8 waterlines, protection of a sewer line, fencing, gates, signage, and pavement markings.
• Compliance requirements: field‑laboratory QC, 40‑hour work week, performance/payment bonds, Navajo‑nation subcontracting plan, Buy‑America and Davis‑Bacon adherence.