Hale Boggs Memorial Bridge
Coordinates: 29 ° 56 ′ 33 ″ N , 90 ° 22 ′ 25 ″ W.
| Hale Boggs Memorial Bridge | ||
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| use |
 Interstate 310
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| Crossing of | Mississippi River | |
| place | Destrehan and Luling in Louisiana | |
| construction | Cable-stayed bridge | |
| overall length | 3428 m (including driveways) 837 m (main bridge) |
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| Longest span | 372 m | |
| Clear height | 42 m ( MHW ) | |
| start of building | 1974 | |
| opening | 1983 | |
| planner | Frankland and Lienhard Modjeski and Masters |
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| location | ||
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The Hale Boggs Memorial Bridge , also Luling-Destrehan Bridge is a cable-stayed bridge over the Mississippi River between Destrehan and Luling in the state of Louisiana to the United States . It runs four lanes of Interstate Highway 310 and is operated by the Louisiana Department of Transportation and Development (LaDOTD). The average traffic volume between 2010 and 2016 was 50,000 vehicles per day. It is named after the US politician Hale Boggs .
history
To cross the Mississippi there were only a few ferry connections in St. Charles Parish until the completion of the Luling – Destrehan Bridge in 1983, including the only car ferry between Luling and Destrehan since the beginning of the 20th century, operated by the Parish and the Louisiana Department of Highways . About one kilometer upriver, the construction of the substructure of the cable-stayed bridge by Massman Construction from Kansas City (Missouri) began in July 1974 ; the superstructure was carried out by Williams Brothers Construction from Houston and Ishikawajima-Harima Heavy Industries from Japan. The bridge was designed jointly by Frankland and Lienhard and Modjeski and Masters .
During the construction of the bridge on October 20, 1976, a serious ferry accident occurred not far from the construction site. The car ferry George Prince collided with the Norwegian oil tanker SS Frosta on the way from Destrehan to Luling in the early hours of the morning , whereby the much smaller ferry overturned . The 34 vehicles on the ferry sank and 77 of the total of 95 passengers and crew on the ferry drowned. With the opening of the Luling-Destrehan Bridge in October 1983, the ferry service was discontinued. In 2009 a memorial was inaugurated next to the bridge to commemorate the victims of the 1976 disaster.
The Luling Destrehan Bridge was the first cable-stayed bridge over the Mississippi and was awarded the Outstanding Civil Engineering Achievement Award of the ASCE in 1984. In March 1985, it was renamed Hale Boggs Memorial Bridge in honor of the politician Thomas Hale Boggs , who represented Louisiana as a member of the United States House of Representatives for several years and was a member of the Warren Commission . The bridge is part of the barely 20-km-long Interstate 310 , the west of New Orleans to US Highway 90 with Interstate 10 connects. It was connected to the US 90 in 1988 and finally to the I-10 in 1993.
description
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The Hale Boggs Memorial Bridge , including the access roads, has a total length of 3428 m, while the main bridge, designed as a cable-stayed bridge, has a length of 837 m. The 25 m wide continuous girder of the main bridge consists of an orthotropic plate on two 4 m high trapezoidal hollow girders made of weatherproof structural steel connected in the middle . It is carried by 72 tensioning ropes, which are attached in 4x3 groups on each side of the bridge to two A- pylons in a fan system ; the anchoring on the outer cantilever arms was carried out on the deck girder .
The longest span between the approximately 140 m high steel pylons (from the top of the foundation) is 372 m. The spans to the next river pillar are 155 m and 151 m, respectively, and the end of the main bridge up to the expansion joints is then each covered by a span of 79 m, to which the entrances from a large number of girder bridges connect.
Even during the construction of the bridge, damage to the protective jacket was found on the tensioning cables. Despite several repairs, the condition deteriorated and the steel wires and their anchors corroded over the years. At the beginning of the 2000s, the condition of the 72 tension ropes was comprehensively analyzed and a concept for a complete replacement while the bridge was in operation was developed. The original tensioning ropes consisted of 103–307 combined 6.4 mm single steel wires and were replaced between 2008 and 2012 by wire ropes made of 23–67 coated 7-wire strands with a diameter of 15.7 mm, which means that individual strands will be replaced in the future is possible. In addition, the carriageway was repaired and the surface was renewed in 2016.
See also
literature
- Armin B. Mehrabi, Christopher A. Ligozio, Adrian T. Ciolko, Scott T. Wyatt: Condition Assessment, Rehabilitation Planning, and Stay Cable Replacement Design for the Hale Boggs Bridge in Luling, Louisiana. Transportation Research Circular E-C128: International Bridge and Structure Management Conference, Buffalo October 2008, pp. 215-233.
Web links
Individual evidence
- ^ A b c d Paul Norton, Jian Huang: Hale Boggs Cable Stayed Bridge - Inspection, Fatigue Analysis & Repair. IBTTA Maintenance Conference, Nashville October 2011.
- ↑ LADOTD Estimated Annual Average Daily Traffic Routine Traffic Counts. Parish 45 ( St. Charles Parish ), Route = I-0310, Milepoint = 7.31, Station = 224610 (AADT 2010/2013/2016 = 47.409 / 52.189 / 49.924), LaDOTD. Retrieved October 26, 2017.
- ↑ a b Hale Boggs Bridge / Interstate I-310. St. Charles Parish Museum and Historical Association. Retrieved October 26, 2017.
- ^ A b Armin B. Mehrabi et al .: Condition Assessment, Rehabilitation Planning, and Stay Cable Replacement Design for the Hale Boggs Bridge in Luling, Louisiana. International Bridge and Structure Management Conference, Buffalo October 2008, pp. 215–233, here pp. 215–217.
- ^ Luling / Destrehan Ferry Disaster. St. Charles Parish Museum and Historical Association. Retrieved October 26, 2017.
- ^ Marine Casualty Report. SS FROSTA (Norwegian), M / V GEORGE PRINCE; Collision in the Mississippi River on October 20, 1976 with Loss of Life. United States Coast Guard, Washington, DC 1978, pp. 19-24.
- ^ Matt Scallan: St. Charles Parish to dedicate monument to ferry disaster. The Times-Picayune, October 15, 2009. Retrieved October 27, 2017.
- ↑ Hale Boggs Memorial Bridge - Louisiana DOT . TranSystems Corporation. Retrieved October 28, 2017.
- ↑ Michael W. Smart: Hale Boggs Memorial Bridge (I-310 Luling-Destrehan) Stay-Cable Replacement. International Bridge Technologies, Inc. Retrieved October 26, 2017.
- ^ Armin B. Mehrabi et al .: Condition Assessment, Rehabilitation Planning, and Stay Cable Replacement Design for the Hale Boggs Bridge in Luling, Louisiana. International Bridge and Structure Management Conference, Buffalo October 2008, pp. 215–233, here pp. 217–233.
- ^ Paul Fossier: Cable Stay Replacement and Deck Rehabilitation of I-310 Luling - Hale Boggs Mississippi River Bridge. AASHTO SCOBS Annual Meeting, Spokane June 2017.
- ↑ Anna Thibodeaux: Hale Boggs is a 'test bridge' for surfacing. St. Charles Herald-Guide, February 5, 2016. Retrieved October 28, 2017.