05 Subgrade Cross Section Report.zip

This file is a Subgrade Cross Section Report in compressed format (.zip) supporting a federal highway construction solicitation. The report provides technical specifications and engineering documentation for road improvement work on approximately 56.5 miles of roads within Mojave National Preserve in San Bernardino County, California. The project includes full depth reclamation and resurfacing of Kelso-Cima Road (19.3 miles), South Kelbaker Road (22.3 miles), and Morningstar Mine Road (14.9 miles), with work scope encompassing pavement widening to 26 feet, reinforcement of 48 low water crossings, roadway realignment in select areas, and safety improvements including rumble strips, signage, and pavement markings. The estimated project cost ranges from $80,000,000 to $120,000,000.

This solicitation (6982AF25B000013) is issued by the Federal Highway Administration, Central Federal Lands Highway Division in coordination with the National Park Service as a full and open competition invitation for bid with HUBZone price preference. The subgrade cross section report serves as supporting technical documentation detailing subsurface conditions and engineering requirements necessary for bidders to develop accurate proposals. Given the project's location in an environmentally sensitive area with natural resource constraints, the report likely includes detailed soil composition, drainage considerations, and structural analysis to ensure construction methods comply with environmental restrictions and maintain construction schedules. Bidders must review this technical documentation along with the complete plans and specifications to understand subsurface conditions and develop compliant construction approaches.