This project included the construction of a 900-foot precast, post-tension segmental bridge in the heart of the Appalachian Mountains in east Tennessee. The bridge has an curve geometry and an 11% sag vertical curve. Clearing limits for the project are limited to the area under the columns, and thus, the trees were topped under the deck. Additionally, the original ground under the bridge is steeper than a 1 to 1 slope.
Wilson & Associates’ duties were to lay out all precast pieces in the yard, perform as-builts for post castings and align the post-cast pieces for match casting. Also, our firm provided all layout for the field assembly of the structure and provided all geometry control for the design engineer. We serviced this project with two crews, along with a data engineer, for five to six days a week for two-and-a-half years.