A discussion of the behavior of the superstructure of a pedestrian bridge fabricated with glass-reinforced plastic under a field load test is presented. Experimental measurements of elastic vertical deflections were 1.8 times greater than those predicted by means of a finite element solution. A live load of 4.0 times the dead load of the superstructure and polymer concrete deck was used for the elastic load test. Elastic strains were uniform among the different elements of the superstructure and computed stresses did not exceed 10,000 Ibf/in² at full live load. A residual deflection in the superstructure of 0.10 in upon removal of the live load was concentrated in the supports. Creep deflection and strain measurements recorded over 61 days indicated that negligible creep occurred under a load of 3.0 times the dead load. Air temperature variations produced pronounced changes in deflection and strain readings, but were reversible. The overall structural behavior of the bridge and resistance to handling abuse exceeded expectations.
Static and cyclic load tests were conducted on a 16-ft long bridge constructed with fiberglass materials. Approximately 1.6 million cycles of loads we...
The Manual on Uniform Traffic Control Devices (MUTCD) provides little guidance on the installation of marked crosswalks, especially at locations other...
Links with this icon indicate that you are leaving a Bureau of Transportation
Statistics (BTS)/National Transportation Library (NTL)
Web-based service.
Thank you for visiting.
You are about to access a non-government link outside of
the U.S. Department of Transportation's National
Transportation Library.
Please note: While links to Web sites outside of DOT are
offered for your convenience, when you exit DOT Web sites,
Federal privacy policy and Section 508 of the Rehabilitation
Act (accessibility requirements) no longer apply. In
addition, DOT does not attest to the accuracy, relevance,
timeliness or completeness of information provided by linked
sites. Linking to a Web site does not constitute an
endorsement by DOT of the sponsors of the site or the
products presented on the site. For more information, please
view DOT's Web site linking policy.
To get back to the page you were previously viewing, click
your Cancel button.
United States Department of Transportation
[PDF-1.67 MB]
