This example shows the analysis of a 120- ft single span AASHTO bulb- tee beam bridge with no skew, according to the AASHTO LRFD specifications. The structure consists of six precast, pretensioned beams spaced at 9’- 0” centers. Beams are designed to act compositely with the 8- in. cast- in - place concrete deck to resist all superimposed dead loads, live loads and impact. A ½ in. wearing surface is considered to be an integral part of the 8- in. deck. A 2 in. wearing surface will be installed in the future.
This example is similar to the one presented in the PCI Bridge Design Manual.