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Big Bend National Park Road Repairs

Project Description

This project will focus on the upper 2 miles of the Chisos Basin Road, starting near Chisos Basin Visitor Center, including road rehabilitation on the current alignment and current width. The rehabilitation will consist of pulverizing the existing asphalt for additional base, reshaping as needed, and compacting and repaving with approximately 3 inches of asphalt. Road drainage will be reviewed to incorporate appropriate improvements to insure proper roadway drainage.

The first section of repair work on the West Entrance Road will begin at the Park Boundary and continue for approximately 1.1 miles. Repair of this section will include approximately 50 percent of the length being subexcavation of 1.5 to 2 feet, replacement of the subgrade and base, and repaving. The remaining road length will be pulverized, shaped, and paved. The second section needing repair is at milepost 7.5 of the West Entrance Road. This bentonite soils area is approximately 500 feet in length and will need further investigation to determine the appropriate treatment. An initial possible solution for estimating purposes will be subexcavation of 1.5 to 2 feet, replacement of the subgrade and base, replacement of three sections of concrete paved ditch, and repaving.

On the North Entrance Road, approximately a 500-foot section of roadway, is showing significant pavement distortion, possibly due to expansive soils. This area will need further investigation to determine the appropriate treatment.

In addition, 2 repair sites were added on Ross-Maxwell Road at approximately milepost 14.1 and 16.3. These repair areas will entail subexcavation and patching.

Anticipated Timeline

Advertise: Fall 2020
Construction: Fall 2020 - Spring 2021

Project Photos