Teri Pope of the Georgia DOT sent us this aerial perspective of the site where the new Clarks Bridge is being constructed on Lake Lanier.
The temporary bridge built adjacent to the parking lot allows the contractor to get materials, staff and equipment to the barge.
Two of the twelve concrete caissons have been poured and are now curing (concrete doesn’t dry it “cures”).
“The second caisson was drilled to a depth of 105.55 feet to bedrock. [On Monday, March 10th] the crew is moving the barge into position to begin drilling for the third caisson this week. The next caisson is south of the two existing ones, closest to the existing bridge. This is the largest caisson on the project, 6 ½ feet diameter. Four of the twelve caissons are this size requiring special cooling tubes to ensure the concrete cures to the needed strength. Once cured the cooling tubes will be removed and the tube voids filled with high strength grout,” explained Harold Mull, Georgia DOT District Construction Engineer.
The existing bridge was built in 1958 and does not meet current design standards.
The new span will have 12-foot-wide lanes and an 8-foot-wide shoulder in each direction, suitable for bicycles. The project also builds a new pedestrian tunnel under SR 284.
This $8.7 million project for the new bridge on SR 284 over the Chattahoochee River portion of Lake Lanier at the Lake Lanier Olympic Center should be completed by December 31, 2015.
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