A.H. Beck was contracted to install drilled shafts up to 93 feet deep at six different overpass locations to support the widening of I-275 in Tampa, Florida.
The Lane Construction Corporation contracted A.H. Beck to install drilled shafts at six overpass locations along I-275 in Tampa Bay, Florida, to support widening the interstate through a growing healthcare and economic center for the city. This project required 48-inch drilled shafts up to 93 feet deep, working in tight conditions along open roadways, working with silty sand soil overlying karst limestone, and a combination of temporary and permanent casings to construct the shafts. For the temporary casings, we used flush-joint, segmental casings set into the limestone formation and then used a casing oscillator to assist in the extraction of casings after the concrete was placed. In addition, the project required a variety of non-destructive quality control processes, including the Shaft inspection Device (SID), Thermal Image Profiling (TIP), and Cross-hole Sonic Logging (CSL) to verify the integrity of the drilled shafts.
