AZ BL COLO 7528(1) Burro Creek Road_FINAL HYD Report.pdf

This is a Hydrological Report supporting a federal road resurfacing and rehabilitation project. The document analyzes hydrological conditions for the Burro Creek Road project located in Mohave County, Arizona, approximately 71 miles southwest of Kingman. The 1.3-mile roadway section, situated at elevations between 1,885 and 2,255 feet, requires comprehensive drainage analysis to inform construction design and mitigation strategies for the 3R (resurfacing, restoration, and rehabilitation) project.

The hydrological assessment evaluates drainage improvements necessary to reduce maintenance costs, erosion, and sediment control issues while improving safety along the route. Key construction activities addressed in the report include the installation of cross culverts, reconstruction of an existing headwall, ditch grading and reconditioning, bank stabilization measures, and riprap aprons throughout the project corridor. The report provides technical analysis to support the base Schedule A work encompassing primary roadway rehabilitation and Option X, which includes bridge sedimentation repairs and undercutting remediation at bridge approaches. The project involves approximately 1,600 tons of roadway aggregate, 2,000 linear feet of ditch reconditioning, 1.3 miles of Full Depth Reclamation (FDR), and associated asphalt concrete pavement work, all designed to enhance access to Burro Creek Campground while addressing hydrological and structural integrity concerns.