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A pontoon bridge is a collection of specialized, shallow draft boats or floats, connected together to cross a river or canal, with a track or deck attached on top. The water buoyancy supports the boats, limiting the maximum load to the total and point buoyancy of the pontoons or boats. [ 2 ] The supporting boats or floats can be open or closed ...
22,300 (2007) Location. The Tyngsborough Bridge is a steel tied-arch bridge located in Tyngsborough, Massachusetts and carries Route 113 over the Merrimack River. With a span of 547 feet, it has the longest span of any steel rib through arch bridges in Massachusetts. It is also the 2nd oldest steel rib through arch bridge in the state.
None. A Bailey bridge is a type of portable, pre-fabricated, truss bridge. It was developed in 1940–1941 by the British for military use during the Second World War and saw extensive use by British, Canadian and American military engineering units. A Bailey bridge has the advantages of requiring no special tools or heavy equipment to assemble.
A suspension bridge is a type of bridge in which the deck is hung below suspension cables on vertical suspenders. The first modern examples of this type of bridge were built in the early 1800s. [ 5 ][ 6 ] Simple suspension bridges, which lack vertical suspenders, have a long history in many mountainous parts of the world.
The length of the floor of this bridge was four hundred feet [121.9 m], without intermediate support. The entire cost was one hundred and twenty-five dollars. They charged a toll of one cent per passenger, and when, from that revenue, the cost of the structure was realized they made the structure free. [6]
The DOT said its original plan for an $11.6 million permanent replacement to the bridge would continue "on an accelerated schedule to meet the original expected completion time of fall 2025."
Without adjusting for inflation and using 2016 dollars, the cost to rehabilitate and retrofit the bridge now but replace it later on would cost $172 million, as opposed to $127 million for a one ...
The plans did not feature a permanent replacement, suggesting that the first Rector Street Bridge may be permanent. However a renovation was planned then, to keep the bridge in place for another ten years. [19] Billed by SHoP Architects as "Rector Street Bridge #2", this structure was in fact the renovated version of the bridge. [22]
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