Mid-Hudson Bridge
41.702925 - 73.946121Koordinaten: 41 ° 42 ' 10.5 "N, 73 ° 56 ' 46 " W
F1
U.S. Highway 44, U.S. Highway 55
The Mid -Hudson Bridge is a road bridge Poughkeepsie in upstate New York with the Ulster County connects on the west side of the Hudson River and U.S. Highways 44 and 55 over the river.
Location, name
When in 1923 the construction of the Mid-Hudson Bridge was decided that although the Bear Mountain Bridge and the Holland Tunnel were already under construction, but it was south of Albany only the Poughkeepsie Bridge, a railroad bridge, but no road bridge over the Hudson River. The future bridge should lie midway between Albany and the mouth of the Hudson River in New York City, about 870 m below the Poughkeepsie Bridge.
Since 1994 is the official name of Franklin D. Roosevelt Mid-Hudson Bridge to President Franklin D. Roosevelt, who was inaugurated as governor of New York and resident of Poughkeepsie with his wife Eleanor on 25 August 1930, the bridge.
Description
The Mid -Hudson Bridge is a suspension bridge with two lanes initially, which were redesigned in 1988 to three tracks, the middle lane is normally closed during rush hour but the respective stronger traffic used in alternating directions. On the Poughkeepsie Bridge facing north side of a pedestrian walkway was externally attached to the bridge.
The bridge was designed by Ralph Modjeski. It is between the anchor blocks 914.4 m (3000 ft) long; the span between the pylons standing in the river is 457.2 m (1500 ft). The bridge has a clearance height of 41.1 m (135 ft) above MHW, a height dimension that was originally set by the Brooklyn Bridge, and since then is true for most bridges in the wider area.
The slender steel pylons are distinguished by their the time corresponding neo-Gothic design from. The stems are reinforced by laterally arranged buttresses that blend until well above the floor beams with stalks. The transitions between the stems and the transverse stiffeners of horizontal and diagonal steel beams have been rounded off to achieve a more pleasing appearance. Between the uppermost transverse stiffeners a bar truss is installed, the appearance serves as a constructive rather demands. The pylons are 96 meters (315 ft) high and is available with a granite -clad concrete foundations that were established with the help of caissons on the bedrock below the river bed. One of the caissons came when lowering off-kilter; it took two years until it was re-erected, which explains the seemingly long construction period.
The track support consists of an upwardly open, steel truss trough in which (ft 36) the 11 m wide road between the high trusses is arranged. The two 40.6 -cm-thick suspension cable run above the truss. They each consist of individual wires 6080 which are processed in an air -spinning method to parallel ropes.
1983 was declared a Landmark the Mid-Hudson Bridge from the American Society of Civil Engineers New York State Historic Civil Engineering.