Project: I-20 over Alcovy River & Alcovy Watershed Grid Manufacturer: Bailey Bridge
Location: Newton County, GA Contractor: Massana Construction
Install Date: 2014. Design Engineering Company: Atkins
Bridge Owner: Georgia DOT
Project Description: With no viable detour and heavy peak traffic occurring on weekends for this section of I-20, the Georgia DOT was forced to limit lane closures for deck replacement to a single-lane shut down on weekdays only. To allow for this short closure schedule, precast grid reinforced concrete deck panels (208 of them) were used. The contractor, Massana Construction was able to replace nearly 34,000 square feet of bridge deck in only nine closure periods.
Notable Features of Project: Staged construction with short five-day closures was possible using precast grid reinforced concrete bridge deck panels, with two unique details utilized to connect the panels. One detail used a simple shear key splice, and the other used overlapping shear studs in the negative moment regions over the piers to develop tension in the panels. Rapid setting concrete was used for the closure pour areas over the supports and between panels, allowing traffic to be put back on the bridge less than one day after the pour. There was a $500 per hour penalty for opening the bridge late (after 10 pm on Fridays).