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The Hale Boggs Memorial Bridge, also known as the Luling Bridge, was the first major cable stayed bridge to be built in the United States. The bridge is somewhat unusual for a cable stayed structure in that is has very few stay cables. In addition, the deck is built like a box girder, which is a much more robust structure than typically seen on suspended bridges. The entire bridge has nearly two miles of elevated structure. The suspended spans include a 1,200 foot span over the river navigation channel, plus side spans of 495 feet and 508 feet. Including the two approach spans and the box girder structure it totals 2,744 feet long. The bridge has 2, 400 foot tall towers and a road deck with a clearance 155 feet from the sea-level water below. The bridge at Luling is supported by 72 stay cables arranged in 24 groups of 4 cables. Woven from 1/4-inch diameter wire, each stay cable consists of between 103 and 307 strands of wire, coated with a protective polyethylene layer that ranges between 1/4-inch and 1-inch thick.
Due to a defect in the protective coating which resulted in premature corrosion, the stay cables were replaced in 2009 at an estimated cost of $20-million to $30-million.
The Luling Bridge was designed and built to survive hurricane force winds, as demonstrated by Hurricane Katrina hit in 2005.
Built 1983 at a cost of $135 million
Dimensions
Length of largest span: 1,234.6 ft.
Total length: 2,744.4 ft.
Deck width: 76.4 ft. |
The Hale Boggs Memorial Bridge, also known as the Luling Bridge, was the first major cable stayed bridge to be built in the United States. The bridge is somewhat unusual for a cable stayed structure in that is has very few stay cables. In addition, the deck is built like a box girder, which is a much more robust structure than typically seen on suspended bridges. The entire bridge has nearly two miles of elevated structure. The suspended spans include a 1,200 foot span over the river navigation channel, plus side spans of 495 feet and 508 feet. Including the two approach spans and the box girder structure it totals 2,744 feet long. The bridge has 2, 400 foot tall towers and a road deck with a clearance 155 feet from the sea-level water below. The bridge at Luling is supported by 72 stay cables arranged in 24 groups of 4 cables. Woven from 1/4-inch diameter wire, each stay cable consists of between 103 and 307 strands of wire, coated with a protective polyethylene layer that ranges between 1/4-inch and 1-inch thick.
Due to a defect in the protective coating which resulted in premature corrosion, the stay cables were replaced in 2009 at an estimated cost of $20-million to $30-million.
The Luling Bridge was designed and built to survive hurricane force winds, as demonstrated by Hurricane Katrina hit in 2005.
Built 1983 at a cost of $135 million
Dimensions
Length of largest span: 1,234.6 ft.
Total length: 2,744.4 ft.
Deck width: 76.4 ft. |
