Due to torrential rain storm, a substantial amount of water flooded Yokohl Creek and cause the east approach to be washed out along with fill behind wingwalls and the east abutment. The project utilized force account labor, equipment, materials, and contract to repair lost unclassified material and components at the bridge. Work to be completed involves the following: develop water supply; temporary traffic control; prepare storm water pollution plan; clearing and grubbing, 1 Lump Sum (LS); finishing project, 1 LS; Excavation, 524 CY; Class II Aggregate Base, 14 CY; Hot mix asphalt, 21 Tons (T); Corrugated Metal Pipe (CMP), 180 LF x 36 inches (in) diameter; reconstruct fence, 96 LF; Trench safety, 1 LS; Rock slope protection, 115 CY; and mobilization, 1 LS. Regarding develop water supply, this action entails costing out expenses for construction water which consists of a water truck going to a nearby ranch or farm and bringing water to the site. Regarding clearing and grubbing, this action will be policing the area of trash and rubbish prior to construction. The action will be limited to the shoulders. Regarding excavation, the action will involve removing unsuitable materials at each end of the bridge, 28 feet (ft) wide. The west end is 58 ft long from the bridge edge and the east end is 71 ft from the bridge edge. Fence will be repaired in-kind using like materials and within the original post holes. Hazard mitigation will be achieved through an alternate method of repair. Aggregate base rock and Hot mix asphalt will be placed over the excavations at the bridge approaches. The project plans to break culvert length, 180 LF x 36 inches (in) diameter, into four different runs and placed at the four bridge wing walls to enable waterflow into the water way. A trench will be dug using a backhoe along the roadway. Rock slope protection will be placed at the bridge’s four corners at the wing walls. Project Alternatives: (1) (No Action) This alternative would result in a risk of additional damages. If the damage is not repaired, then adverse economic and social impacts may occur and continued negative impacts may be experienced. (2) (Repair in-kind) Repairs made in kind may result in similar damages from future flood events. (3) (Relocation) Floodplain avoidance by relocating the facilities is not a practicable alternative as the facilities are a part of the county’s water management plan and changes to the facilities may lead to changes in the overall plan.
