Title:
Rehabilitation of the High Street
Overhead
Author(s):
Philip C. Warriner
Publication:
Concrete International
Volume:
5
Issue:
7
Appears on pages(s):
53-57
Keywords:
bridge decks; calcium aluminates; concrete construction; deterioration; high-early-strength cements; precast concrete; repairs; structural design,
DOI:
Date:
7/1/1983
Abstract:
The High Street Overhead is a 1750 ft (533 m) long structure located on a heavily a traveled freeway in San Francisco, Calif. The 30-year-old concrete deck of the southbound truck lane had suffered severe deterioration due to heavy truck traffic, age, and apoor choice of structural details. Freeway operational requirements called for rehabilitation work which would not restrict rush hour traffic. An overnight construction sequence was used consisting of removing the existing deck and railing for one span, erecting the new deck section and rail, completing the splice and attachment work, and opening the new section to evening rush hour traffic within a 20-hr period. Precast deck elements and rapid setting calcium aluminate cement concrete were used in the project.*