When we envision trusses, our minds often conjure images of sturdy roofs, providing support and shelter. Yet, the roots of truss design lie not in roofing but in the strength of bridges. Truss bridges with their intricate network of triangular structures, have stood as testament to human ingenuity and engineering since the 19th century. Initially conceived to span vast distances with minimal materials, truss bridges quickly gained popularity since they were economical to assemble. By harnessing the strength of triangles, these bridges distributed weight efficiently. The evolution of truss bridges is evidence of the ever-changing landscape of engineering. Many steel truss bridges have succumbed to the ravages of time and neglect. Thus, demolition is required, making way for newer, more efficient structures. This was the case for Empire Services’ bridge demolition project in Allentown, PA.
The project presented numerous challenges, chief among them being working over water. With the bridge spanning a creek, ensuring the safety of the crew became paramount. Additional safety protocols were implemented, ensuring that each step of the demolition proceeded with caution and precision. The crew were in personnel lifts that kept them above the water while cutting up the bridge.
The first order of business was the removal of the bridge deck. A precisely accomplished task using an acetylene torch setup. As each piece was cut away, a crane carefully hoisted it from its perch to the designated disassembly area. With each truss weighing approximately 79,000 pounds, the process demanded meticulous planning and execution. Once separated from the bridge, the trusses were deconstructed into manageable pieces, ready for transport. An excavator loaded the salvaged materials onto DVC (an Empire Group affiliate) trucks, each destined for a new purpose. With sustainability in mind, Empire Services ensured that the steel components were separated for recycling, minimizing waste and maximizing resource efficiency.
As the last remnants of the old bridge were carted away, a sense of renewal hung in the air. In its place would rise a modern bridge made of concrete and steel. The Empire Services demolition of the old truss bridge was more than just the dismantling of steel and wood. It demonstrated the power of adaptation and evolution, a reminder that even the strongest structures must yield to the march of progress.
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