This project provides for the improvement of Boise X Connection #3055A Bridge on SE Mud Mountain Road in King County by clearing and grubbing; installing erosion control measures; cofferdams, stream diversion pipe and dewatering system; constructing bridge and walls, removal of structures and obstructions; roadway excavation including haul; removal of existing bridge and wingwall; installing shoring; construction of geosynthetic reinforced soil wall; placement of streambed materials; precast bridge construction with UHPC shear keys; surfacing with crushed surfacing base course; paving with hot mix asphalt; installing beam guardrail; stream channel and site restoration; project temporary traffic control, and other work.
