Is it OK to use Weathering Steel (sometimes called Cor-Ten, A-588, or Rusting Steel) in longitudinal barriers?.William (Will) Longstreet at you have a special need for guidance in any of those areas, or to suggest others.
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A similar project (NCHRP 20-7(257)) synthesizing information on portable concrete barrier shapes, connections, anchorages, and other considerations will also be completed soon.Īs noted at the end of the FAQ list, we expect to develop additional guidance in this format. Additional guidance on cable barrier selection and placement on sloping terrains and adjacent to median ditches will be provided in conjunction with National Cooperative Highway Research Project 22-25, scheduled for completion in early 2010. The Office of Safety's July 20, 2007, memorandum on Cable Barrier Considerations dealt with numerous issues of cable barrier design, selection, and placement. In general the questions relate to rigid and semi-rigid barrier systems. They are the considered opinions of engineers in the FHWA Office of Safety Design and the FHWA Resource Center with helpful input from members of the American Traffic Safety Services Association's Guardrail Committee. These questions and answers offer clarification on the use of roadside hardware for issues not covered by FHWA policy or topics that simply need additional explanation. However, FHWA field offices often raise numerous issues that involve interpretations, extrapolations, device selection, hardware deployment, or simply trying to fit safety devices into real world conditions.
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If you’d like to know more about our bridge construction or have any questions, please contact us today and get a free quote.FHWA barrier guidance is contained in the AASHTO Roadside Design Guide.
Our team will help you choose and create the right bridge for your project. Bridge has been connecting communities with long-lasting bridges for decades, so you can feel confident in investing in our expertise. Or use our chatbox below and we’ll be in touch soon. Still not sure which railing best fits your project? Check our website for more details in our railings. However, there are ways to help open visibility while still keeping the concrete railing’s thick strength such as combining wall barriers with a tubular railing system.Ī bridge’s railing is dependent on factors such as the construction’s budget, bridge deck material, and mandated state specifications. Keep in mind, this railing has a high initial cost and its thick appearance can impede an open road view. Concrete railings are a great idea for urban locations or for bridges that receive heavy truckloads. These sturdy railings are ideal for high traffic roadways or areas where run-off the road accidents are frequent. A concrete railing attaches to the bridge’s deck slab and creates a powerful vehicular barrier. Due to its popularity, the specifications required for building steel railing systems varies for each state.Īs a local resource, concrete is one of the most common materials to choose for bridge construction. Many pedestrian and steel bridge railings can receive extra finishes such as paint coatings or galvanization. Similar to the W-Beam, the Thrie Beam is another steel railing but works best in areas with heavier traffic flow.
The W-Beam is a simple steel railing system but it can be doubled to maximize its strength. This railing system attaches to steel posts or truss girders and is typically 27 inches from the top of the bridge to the pavement. These railings tend to be thinner and more decorative than other railings and provide pedestrian protection on bridges.įor smaller bridges or roads with less traffic consider the W-Beam railing. Ornamental or architectural steel railings are commonly used for pedestrian and low-vehicular traffic. The combination of the railing system’s beams and posts provide the strength necessary to make this a sturdy barrier. This railing can be built alone or integrated into a concrete curb or low barrier wall, thus providing flexibility to various building projects. The most common steel bridge railing is the tubular rail system. So how do you decide which railing is ideal for your bridge? We’ve compiled a small guide of the different types of bridge railings we provide so that you can make the best decision for your construction project.
The railing adds safety for pedestrians, aesthetics, and a custom touch to bridge construction. Common Types of Bridge RailingĪ bridge’s railing depends on various factors such as location, material, and purpose. Bridge, we have several options for bridge railing to best fit each of our construction projects. But like choosing the right deck material, bridge railing proves to be vital for every bridge design.Īt U.S. With so much going into a project, bridge railing may appear to be an afterthought for bridge construction.
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