B09_Amend_0002_Thumb_Ck_Br_Plan_0569-0669_0002.pdf

This document is a set of engineering design drawings for the Thumb Creek Bridge, a federal highway structure located in the West Thumb Bypass area near Yellowstone National Park, California. The drawings provide comprehensive structural and construction specifications for a multi-span bridge project.

The bridge design includes three main spans with detailed plans for girders, abutments, piers, and reinforcement systems. Key structural elements specified include concrete deck construction with live load capacity of 9530-44 pounds per linear foot (HS20-44 loading impact), dead load specifications of 150 pounds per square foot for roadway surface, and earth pressure calculations of 34 pounds per square foot. The design incorporates reinforced concrete with Type B Portland Cement (low alkali) and elastomeric compression joint seals manufactured by D.S. Brown Company. Reinforcement steel specifications require ASTM Grade 40 steel with minimum 2-inch covering on exposed faces. The estimated construction costs are detailed for various components: excavation for structures at $56.6 cubic yards, Class A concrete at $11.31 cubic yards, Pier 1 at $64.08 cubic yards, Pier 2 at $79.05 cubic yards, Abutments at $103.84 cubic yards, superstructure at $401.43 cubic yards, and total reinforced steel at 156,328 pounds with steel bridge railing at $140 linear feet. The drawings include detailed reinforcement bar schedules, specific dimension callouts for all structural members, foundation plans, elevation views, and construction joint details necessary for bid preparation and construction execution.