Comply with the TxDOT Bridge Design Manual-LRFD and the AASHTO LRFD Bridge Design Specifications (current edition) for all aspects of foundation design, unless otherwise specified by TxDOT Bridge Division and Geotech Manual.

Drilled shafts are the most common foundation type selected for TxDOT bridges. Deep foundations could be designed considering exclusively side resistance (skin friction) or a combination of side and end resistance at the discretion of foundation geotechnical engineer.