Jump to content

Manchac Swamp Bridge: Difference between revisions

Coordinates: 30°18′11″N 90°24′21″W / 30.302946°N 90.405807°W / 30.302946; -90.405807
From Wikipedia, the free encyclopedia
Browse history interactively
← Previous editNext edit →
Content deleted Content added
VisualWikitext
No edit summary
Tag: Reverted
No edit summary
Tag: Reverted
Line 7: Line 7:
|official_name=
|official_name=
|also_known_as= I-55 Manchac Swamp Crossing
|also_known_as= I-55 Manchac Swamp Crossing
|carries= {{jct|state=LA|I|55|US|51}};ouwehfiuyweajgf
|carries= {{jct|state=LA|I|55|US|51}};
|crosses= Manchac Swamp
|crosses= Manchac Swamp
|locale= [[St. John the Baptist Parish, Louisiana|St. John the Baptist Parish]] / [[Tangipahoa Parish, Louisiana|Tangipahoa Parish]], [[Louisiana|Louisiana, USA]]
|locale= [[St. John the Baptist Parish, Louisiana|St. John the Baptist Parish]] / [[Tangipahoa Parish, Louisiana|Tangipahoa Parish]], [[Louisiana|Louisiana, USA]]
Line 47: Line 47:
[[Category:Bridges completed in 1979]]
[[Category:Bridges completed in 1979]]
[[Category:Buildings and structures in St. John the Baptist Parish, Louisiana]]
[[Category:Buildings and structures in St. John the Baptist Parish, Louisiana]]
[[Category:Buildings and structures in Tangipahoa Parish, Louisiana]]8iug
[[Category:Buildings and structures in Tangipahoa Parish, Louisiana]]


[[Category:Transportation in Tangipahoa Parish, Louisiana]]
[[Category:Transportation in Tangipahoa Parish, Louisiana]]

Revision as of 15:48, 9 June 2023

Manchac Swamp Bridge
Coordinates30°18′11″N 90°24′21″W / 30.302946°N 90.405807°W / 30.302946; -90.405807
Carries I-55 / US 51;
CrossesManchac Swamp
LocaleSt. John the Baptist Parish / Tangipahoa Parish, Louisiana, USA
Other name(s)I-55 Manchac Swamp Crossing
Maintained byLA DOTD
Characteristics
Total length22.8 miles (36.7 km)
Width312 feet (95 m)
History
Opened1979[1]
Location
Map

The Manchac Swamp Bridge is a twin concrete trestle bridge near Manchac in the US state of Louisiana.[1] With a total length of 22.80 miles (36.69 km),[2][3] it is one of the longest bridges in the world over water and is the longest bridge on the Interstate Highway System. Some claim it is the longest toll-free road bridge in the world.[4] The bridge carries Interstate 55 and U.S. Route 51 over the Manchac Swamp in Louisiana and represents a third of the highway's approximately 66 miles (106 km) in Louisiana. Opening in 1979,[1] its piles were driven 250 feet (76 m) beneath the swamp and with the cost of the span being $7 million per mile ($4.3 million/km) (equivalent to $23.7 million per mile ($15 million/km) in 2023[5]) to complete.[6]

A satellite view of the Manchac Swamp bridge (to the left) and the nearby Pontchartrain bridge

See also

References

  1. ^ a b c Melaragno, Michele G. (1998). Preliminary Design of Bridges for Architects and Engineers. CRC Press. p. 377. ISBN 978-0-8247-0184-0. Retrieved June 20, 2010.
  2. ^ "Manchac Swamp Bridge". Atlas Obscura. Retrieved May 2, 2019.
  3. ^ "Manchac Swamp Bridge, one of the longest bridges in the world over water". www.dangerousroads.org. Retrieved March 7, 2022.
  4. ^ "Longest Bridges in North America". WorldAtlas. August 1, 2017. Retrieved March 7, 2022.
  5. ^ Johnston, Louis; Williamson, Samuel H. (2023). "What Was the U.S. GDP Then?". MeasuringWorth. Retrieved November 30, 2023. United States Gross Domestic Product deflator figures follow the MeasuringWorth series.
  6. ^ Loh, Jules (June 8, 1977). "Louisiana 'oasis' is cypress-paneled". The Tuscaloosa News. Tuscaloosa, Alabama. p. 6. Retrieved July 20, 2010.


Stub icon

This article about a bridge in Louisiana is a stub. You can help Wikipedia by expanding it.

Retrieved from "https://en.wikipedia.org/enwiki/w/index.php?title=Manchac_Swamp_Bridge&oldid=1159315616"