(
Archived Bridge Hunter;
Bridge Hunter;
Historic Bridges;
HAER;
Satellite)
The Mississippi River is not the only obstacle to transportation in Louisiana. It looks like Red River is pretty big.
The 2,982 (909m) long bridge has a main span of 420' (149m). "This truly unique bridge is noted for its K-truss cantilever configuration, and is the only such bridge in the state. While Louisiana is one of the few states that built K-truss bridges, the few other surviving examples are all simple span through trusses. Thus, this bridge's K-truss cantilever main spans, as well as its simple K-truss deck truss spans are all unique in the state. The bridge was lucky enough to be extensively rehabilitated in 2019, so unlike the other K-truss bridges in the state which are at risk for demolition, this one appears to have a brighter future." [HistoricBridges]
"Significance: The Long-Allen Bridge is significant as the first vehicular and pedestrian
bridge crossing the Red River in Shreveport. Bridge construction
began in September of 1931 and the bridge was formally opened to
traffic in September of 1933. The bridge replaced a ferry service
connecting US 80 on the east and west sides of the river. The bridge
was constructed by the Weatherly Construction Company of Kansas
City, Missouri. The bridge is also significant as a good example of a
cantilevered through truss with steel deck girder approaches. The main
span is a K-Truss with riveted connections and lacing. The bridge
provides approximately 90 feet of vertical clearance above the river
and the piers are set 520 feet apart. The central span is flanked by
182-foot long cantilevered spans with three 102'-9" steel deck girder
approach spans at each end of the bridge. The total length of the
bridge, including the approach grades, is 2982 feet. The bridge is
named for Governors Huey P. Long and Oscar K. Allen, under whose
administrations the bridge was built." [
HAER_data]
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HAER LA-18-2
2. Perspective, view looking northeast - Long-Allen Bridge, Texas Street Bridge, Spanning the Red River on US 80, Shreveport, Caddo Parish, LA |
I discovered that the motivating post is not of this bridge.
I wonder how many Long-Allen bridges are in Louisiana. I thought this photo was the predecessor of this Red River bridge until I read the HAER "significance" above. Taking a closer look, the bridge on the right must be one of the Huey P Long bridges over the Mississippi River.
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Wojtek Patyk posted
Long Allen Bridge Louisiana |
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