Single Point Urban Interchanges

AASHTO LRFD design Post tensioned box girders with complex geometry Multi-column integral frame piers with individual spread footings

AASHTO LRFD Design AASHTO Ty. BII-36 box beams Integral abutments founded on precast concrete piles Transverse post-tensioning design of the girders to eliminate longitudinal cracking in the composite deck slab

AASHTO LRFD design Tall closed-face seat abutments on spread footings Strut and tie modeling of post-tensioned anchorage zones

AASHTO LRFD design. Simple span superstructures made continuous for live load with solid pier diaphragms. Multi-column frames piers and abutments with drilled shaft and spread footing foundations. Complicated seismic design due to highly skewed substructures.