Hamilton County, TN - U.S. 27 ReconstructionContact Us
The Hamilton County project is owned by the Tennessee Department of Transportation. The project is 2.602 kilometers in length beginning north of the Olgiati Bridge and extending north on U.S. 27 to Signal Mtn. Blvd. Major element s of construction include 460,365 m3 of excavation; 213,300m3 of borrow excavation (graded solid rock); 15 EA anchored soldier pile retaining walls with concrete facing totaling 18,150 m2; 15 EA MSE block retaining walls totaling 5,870m2; 2,915m of storm drainage installation ranging from 375mm to 1650mm in size; 7 EA overhead sign structures; ITS communication throughout the project; 5 EA concrete blub-tee beam bridges; 1EA curved steel girder bridge; and other miscellaneous associated work items.
The anchored soldier pile retaining walls with concrete facing are constructed with top down construction techniques. Soldier piles for the walls are installed then excavation in 5FT to 10 FT lifts then commences with the installation of wood lagging for shoring being placed in between the piles. As a lift of excavation and shoring is completed tie back anchors are then installed in the wall. Once the walls are fully excavated and all anchors are installed reinforced concrete facing is then installed on the front of the walls.
As this is a reconstruction project all work activities have to be completed around an active highway system and railroad. Due to the close proximity to the railroad extensive shoring and planning is required for bridge construction. High highway traffic volumes require great detail being given to the phasing / traffic control of the project. Additionally due to high traffic volumes and railroad track times a significant amount of our work has to be completed during nighttime hours.