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Second bridge span lifted on Huey P. Long Bridge
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- Description: Using multiple barges and a complicated strand jack system, the second of three massive bridge segments was lifted into place on November 20 at the US$ 1.2 billion Huey P. Long Bridge Widening Project. The bridge segment, larger than a football field, will provide the narrow bridge with the capacity to add new lanes. Due to the sensitive nature of the event, the four-span bridge, which serves as one of three major Mississippi River crossings in the New Orleans metro area, road and river traffic was restricted for the 48 hours of the lift. A traditional stick-built construction method is being used to widen one of the spans. On the remaining three spans, the contractor has opted to use a progressive technique called the span-by-span construction method. It involves pre-assembled span sections to be hoisted into position using hydraulic jacks with steel cables, known as strand jacks. Due to the size and weight (almost 1362 tonnes) of the span segments, these kinds of lifts are very rare, especially in bridge work. When completed, the widen truss will allow the narrow bridge to have three 3.35 m-wide lanes, along with new inside and outside shoulders in each direction.
- Category: Flag video