Federal Highway Administration – Western Federal Lands Highway Division
White Shield provided survey and mapping services for this project located approximately 10 km east of the City of Thompson Falls. The project was intended to support improved public access to the Lolo National Forest and other public lands in the Thompson River Corridor that is safe, efficient, and convenient. Environmental goals included the improvement of river conditions by eliminating road surface sediment load, and decommissioning unnecessary segments of the dual road system. Besides improving access to national forest resources and recreational opportunities and to the Thompson River corridor within private timber lands, the improved road would correct current water quality problems caused by existing gravel roads. The project includes upgrading approximately 43 miles of road and eliminating many miles of nearby private and public gravel roads within the corridor.
Services included providing GPS controlled aerial photography for mapping approximately 70 km of Thompson River Road, establishing the horizontal and vertical control needed to control the aerial photography for the project, establishing pairs of horizontal and vertical control points at approximately 5-km intervals along the project for future conventional traverses, and providing controlled color vertical aerial photography for mapping of the project corridor with approximately 26 flight lines of approximately 215 exposures.