06 Top of Base Course Cross Section Report.zip

This file is a compressed archive containing a Top of Base Course Cross Section Report related to a major road improvement project in Mojave National Preserve, California. The report documents technical specifications and design details for the base course layer of the resurfacing work planned across approximately 56.5 miles of roads, including the 19.3-mile Kelso-Cima Road, 22.3-mile South Kelbaker Road, and 14.9-mile Morningstar Mine Road. The project involves full-depth reclamation of existing pavement with placement of new asphalt, roadway width increases to a consistent 26 feet, and reinforcement of 48 low water crossings.

The Federal Highway Administration's Central Federal Lands Highway Division, in coordination with the National Park Service, is executing this improvement initiative with an estimated project cost between $80,000,000 and $120,000,000. The solicitation is issued as an Invitation for Bid under full and open competition with HUBZone price preference and includes significant environmental constraints due to the natural resource-sensitive location. The cross-section report provides essential construction documentation for contractors bidding on this project, detailing the foundational layers and specifications necessary for proper pavement installation in this sensitive desert environment.