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The contents of this report reflect the views of the author(s), who is responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the Virginia Department of Transportation, the Commonwealth Transportation Board, or the Federal Highway Administration. This report does not constitute a standard, specification, or regulation. Any inclusion of manufacturer names, trade names, or trademarks is for identification purposes only and is not to be considered an endorsement.

Title:

Construction of Prestressed Concrete Single-Tee Bridge Superstructures
Authors:
Michael M. Sprinkel
Michael M. Sprinkel
Year: 1977
VTRC No.: 77-R50
Abstract: This report discusses in detail the construction of the first five precast, prestressed concrete, single-tee beam bridge superstructures to be let to contract in Virginia. The data suggest that this single-tee beam enables efficient construction of the superstructures of bridges in the short-span range, because the contractor can move from the bridge seat stage of construction to the forms-in-place stage by erecting tee beams mass produced at a fabricating plant. Using a 45-ton (4 x 104 kg) crane, several men can erect, connect, and overlay the tee beams at the rate of about one 42 ft. x 44 ft. (12.6 m x 13.2 m) span per week. With the addition of precast parapets, superstructure form work at the bridge site is almost eliminated. On-site construction time for the single-tee superstructure is controlled primarily by the time required for the site-cast concrete used in the diaphragms, overlays, and backwalls to attain the design strength. Single-tee bridge construction should be continued in a manner consistent with the conclusions of this report. Some additional research is recommended.