Title:
Stretched-Out Precast Concrete I-Girder Bridge Spans
Author(s):
Ahmad M. Abdel Karim and Maher K. Tadros
Publication:
Concrete International
Volume:
13
Issue:
9
Appears on pages(s):
37-40
Keywords:
costs; girder bridges; precast concrete; splicing; General
DOI:
Date:
9/1/1991
Abstract:
Summarizes a state-of-the-art report of the Bridge Committee and Bridge Producers Committee of the Precast/Prestressed Concrete Institute to be published in early 1992 to address the need to develop concrete bridge I-girder systems to compete with structural steel bridges in the range of 150 to 250 ft. The article describes some of the creative ideas used to make standard I-girder shapes span longer than their simple span capabilities. An economic comparison is presented to show that a 6 ft deep standard bulb-tee girder used for a bridge of two 175-ft spans can save as much as $10/ftý in construction of the bridge deck. Additional functional benefits can be realized due to the relatively long life and low maintenance costs of precast concrete bridges.