Precast Concrete Alternate Provides Unique Solutionfor Airport Terminal Bridge

摘要

A value engineering alternate using precast, prestressed concrete led to the resign of the 17-span bridge structure that provides two - level access to the terminal building at the new Austin - Bergstrom International airport in Austin, Texas. The $4.6 million structure is 1400 ft (427 m) long with typical span lengths of 80 ft (24.4 m). An innovative design using standard precast, prestressed trapezoidal U- beams, together with stay - in - place deck panels, was employed.