Truss bridges are one of the oldest bridge types in America. In fact, even novice bridge enthusiasts can easily spot one, since they are identified by their singular design feature: the truss, which forms triangular units. Truss bridges are used for a variety of reasons, mainly because they can easily accommodate dynamic loads. A through-truss bridge is one in which the roadway dissects the truss, meaning the truss is seen both above and below the deck. Here are a few interesting facts about the optimal design of through-truss steel bridges.
Factors that Impact Truss Steel Bridge Design
When studying through-truss steel bridges, engineers are primarily concerned with three things: optimum weight, optimum height and building material. A combination of these factors greatly impacts not only the cost of the bridge, but also its longevity and usefulness. Additional factors such as weather and use are also taken into consideration.
Determining the Optimal Through-Truss Design
In 2014, students at the civil engineering school at the University of Manchester in the UK studied through-truss bridge design with the goal of understanding the best combination of the above. They were most concerned with bridge stability, longevity, and cost-effectiveness. They determined that the element with the most impact on bridge design was the decking material. While minor adjustments can be made in the width and height, the weight of the decking material has the largest impact on the longevity of the bridge. They also realized that reinforced concrete decking is the most cost-effective; however, when reducing weight is the primarily concern, steel is the best option.
Through-Truss Bridges and U.S. Bridge
U.S. Bridge has been a leader in bridge building since 1936. Our expert staff of engineers, builders, and designers are well-versed in all bridge types, including through-truss steel bridges. Still family-owned and operated, U.S. Bridge is committed to providing customers with the latest in bridge design and construction. Our past clients include state and local governments, as well as businesses.
If you would like to find out more about U.S. Bridge, our work and our team of experts, please contact us today. We are happy to discuss your steel bridge needs and look forward to working with you.