This bridge is a movable, historical monumental bridge, and it is one of the largest bascule bridges ever built. Even when closed, the bridge still offers considerable clearance for boats. This bridge is unusual because it is a movable trussed through arch bridge. The bridge also enjoys an incredible amount of local significance as it is the only highway bascule bridge in the entire state, in addition to its high level of national significance for its size and unusual design.
Chickamauga Dam Lock
Sequatchie Concrete furnished concrete for use in lock maintenance and preparations for lock replacement. At the Nickajack Dam project 132,000 cubic yards of concrete was furnished.
A super flat floor to allow distribution workers to use wire-guided lift trucks to store and retrieve inventory stacked on shelves in the 50-foot-high complex. Finished with a variance of less than .0015 of an inch across a building that spans the size of nearly four football fields.
“This may be the flattest floor in the world,” said Walter Ford, vice president of operations for Morgan Construction. “We worked really hard to maintain ideal conditions with temperature, lighting and the concrete mix to get the flattest floor imaginable.”
The concrete for this project had a maximum temperature specification of 50 degree at placement. This was achieved by using over 1.2 million pounds of ice and 9 million standard cubic feet of liquid nitrogen. Making this project one of the largest mobile nitrogen pours in the country to date. The 50-degree maximum temperature was needed to eliminate shrinkage in the many 2000 yard continuous pours and was accomplished with ambient temperatures in the mid 90’s.