C04_Attachment 4. Scaled Copy of 1950 Plans_1240LU26Q0095.pdf

This document is a set of technical drawings and specifications for a Pack Trail Bridge over Selway River, located 1 mile above the mouth of Running Creek in a National Forest setting. The drawings are reduced prints prepared by the U.S. Department of Agriculture Forest Service, Region One, E.I. Thomas, and designed by A.J.X., with structural design by J. Truscott.

The bridge design consists of a steel truss structure with detailed engineering specifications across multiple sheets. Key structural components include main cables, hangers, cable supports, expansion joints, tower details, concrete anchors, and abutment designs. The drawings provide plan views, side elevations, roadway sections, detailed cross-sections at piers, and component-level specifications for items such as stringers, sills, stirrups, caps, rail posts, roll braces, bolts, comb/ball studs, casks, and floor beams. A bill of materials is included with lumber grades sourced from Western Wood Products Association and West Coast Lumber Inspection Bureau. Specifications reference Forest Service Standard Drawings and note that all structural steel must conform to AISC-311. The document indicates this is a reduced print and notes that concrete in beams is air-entrained with specific air content and cement specifications. Installation work is specified to consist of erection of all new bridges and sealing of existing concrete.