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A field load test program was conducted to evaluate three open-deck timber railroad trestle bridges. The bridges included part of a 31-span bridge, a 4-span bridge with skewed interior bents and a 3-span bridge. Plies of the chords of the bridges were evaluated non-destructively for material properties...
The concept of combining wood and concrete in layered composite bridge deck was investigated. A shear key/anchor detail recently used in Europe to construct floors in office buildings was adapted for this study. This connection detail provides the interlayer shear transfer between the layers. Laboratory...
The present research suggests a new approach to the use of composite materials technology for repair of timber structural members. Due to the small aspect ratio of the typical railroad bridge span timbers, stiffness degradation can be related to decrease in the beam's shear performance. To rejuvenate...
This research considers the influence of different construction materials on the dynamic impact factor of bridges. The general concept of the dynamic impact factor and typical evaluation methods are reviewed.
This report is an interim report for the first phase of an ongoing project entitled "Moderate Weight Bridge Guardrail for Rural Sites." The objective is to examine the potential of a new bridge guardrail concept as a means of increasing the safety of travel over rural bridges. This project is conducted...
The objective of this project is to provide local transportation officials with the information required to make sound decisions on the management of the bridges within their jurisdiction. Automated procedures were developed to prioritize the required maintenance, rehabilitation, or replacement (MR&R)...
The finite strip method was used to develop an automated procedure for determining the distribution of load on highway bridges subjected to both standard truck loads and overload permit vehicle loads. The distribution factors obtained by this procedure are used in the design and load rating of highway...