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Récord: 7000 m.
País: Estados Unidos
Localización: Jefferson Parish, Louisiana
Descripción:Huey P. Long Bridge Main Span Superstructure, Jefferson, LA
The Huey P. Long Bridge Widening is a four-phase project vital to the recovery of Greater New Orleans.
The widening will add an additional travel lane, as well as inside and outside shoulders to each side of the bridge, providing a safer and more reliable crossing over the Mississippi River.With a joint venture, Traylor Bros., Inc. employed an innovative span-by-span erection method to build this project. By utilizing temporary stabilizing frames that span between the bottom chords of the proposed widening trusses, and stabilizing towers to brace the compression chord of the truss while lifting, the joint venture eliminated the need for falsework in the river, with only one exception: the West Bank anchor span, which was constructed with a modified stick build method.
The stabilizing frames and trusses were erected on barges and floated into place directly underneath the bridge. The whole system of trusses and stabilizing frames was lifted at the four corners by strand jacks supported on top of the widened pier trusses of the bridge. Therefore, despite the contract anticipating the team delaying bridge and marine traffic, we devised a scheme that allowed preassembly of the bridge, minimally impacting the public. This was a huge win for both the team and the local economy.
This phase of the project consists of .451 miles of a cantilever truss highway and railroad bridge widening with parallel trusses and steel stringers for a widened roadway deck system. The work includes widening the roadways on the 71-year-old span from two nine-foot lanes in each direction to three 11-foot lanes, with appropriate shoulders and fastening on the new trusses. The existing bridge was retrofitted in order to be connected to the 17,500 tons of new steel. 60,000 existing rivets were replaced with high-strength permanent bolts.
Expanded Huey P. Long Bridge will open 4 months ahead of schedule
Updated: Feb 05, 2013 7:55 PM
Jefferson, La. – Good news for drivers who use the Huey P. Long Bridge. Transportation officials say the bridge, undergoing expansion work, will be completed four months ahead of schedule. On Tuesday, Louisiana Transportation Secretary Sherri H. LeBas announced that the bridge will be fully open to drivers on June 16, 2013.
"We are proud to announce the early and on budget completion of the amazing improvements being made to the Huey P. Long Bridge," Sec. LeBas said. "Motorists are already experiencing the benefits as they drive on newly opened ramps, overpasses and lanes. In June of this year, you will see the total rebirth of this iconic bridge meaning it will be safer, quicker and easier to get where you need to go."
Drivers began using two new lanes on the bridge in April 2012 so that the old lanes could be removed and the new lanes expanded to their final width on the bridge. New ramps and overpasses are in use on the East and West Banks. Two additional ramps and overpasses along with the new lanes on the bridge itself will be completed prior to the opening.
The bridge is now in the final phase of a $1.2 billion widening project started in 2006 shortly after Hurricane Katrina. When completed, the bridge will have three 11-foot lanes in each direction with eight-foot outside and two-foot inside shoulders. The driving surfaces will more than double from the original 18-feet wide to 43-feet wide on both sides of the bridge. Additionally, new intersections with traffic signals at Bridge City Avenue and Jefferson Highway are being constructed.
In addition to wider lanes, the improvements also include a new overpass of Bridge City Avenue in the East Bank bound direction. It is expected to be completed in the next two months. The final overpass to be completed with be over Jefferson Highway in the West Bank bound direction. It will be finished shortly before the opening date for the entire bridge.
Workers are also busy widening the lanes on the main part of the bridge over the river. Once they are completed, concrete barriers between the lanes currently in use and the newly constructed lanes will be removed. Traffic will be allowed on all lanes following a bridge dedication ceremony on June 16.
The ceremony will begin in the morning of June 16 with a 5K race/walk on the bridge. A ribbon-cutting, entertainment and other festivities will also be part of the celebration of the new, wider bridge.
A five-minute video telling the story of the Huey P Long Bridge is available at www.youtube.com/hueypbridgewidening. For more information go to www.hueypbridge.com or follow the project on Facebook and Twitter.
The $1.2 billion Huey P. Long Bridge Widening Project is one of 16 projects in the $4.6 billion Louisiana Transportation Infrastructure Model for Economic Development (TIMED) Program, managed by Louisiana TIMED Managers (LTM), a joint venture of GEC Inc., Parsons-Brinckerhoff Inc., and THE LPA GROUP INCORPORATED. It is the single largest transportation program in Louisiana history and is designed to enhance economic development and improve evacuation routes and safety through an investment in infrastructure.
The program is funded by a dedicated $0.04 per gallon gasoline and motor fuels tax. It was created by Act 16 of the 1989 Louisiana Legislature and was approved by a vote of the people. Projects include widening 536 miles of state highways, new construction or improvements to three major bridges and the improvements to both the Port of New Orleans and the Louis Armstrong International Airport.
The Louisiana Department of Transportation and Development (DOTD) is committed to delivering transportation and public works systems that enhance the quality of life. In addition to more than 16,600 miles of roadway, including over 890 miles of interstate, DOTD supports the development of the state's aviation, marine and rail infrastructures. Through this work, we are able to facilitate economic development, create job opportunities, improve vital evacuation routes, and make critical freight corridors safer and more efficient.
El Puente de Huey P. Long (en inglés: Huey P. Long Bridge) es un puente voladizo con estructura de acero que cruza el río Misisipi en el sur del estado de Luisiana. El puente incorpora tráfico ferroviario y de automóviles, haciendo de este puente un tanto peculiar.
Inaugurado en diciembre de 1935, fue el primero construido sobre el río Misisipi en el estado de Luisiana. Actualmente es una de las tres principales vías de transporte sobre el río Misisipi en el área de Nueva Orleans. Antes de la construcción del puente los trenes y automóviles eran transportados por transbordadores. Fue el puente de ferrocarril más largo del mundo durante unos 15 años después de su construcción.
En 1929 el gobernador Huey P. Long Jr inició un programa dedicado a mejorar la infraestructura de transporte, incluyendo la construcción del primer puente sobre el río Misisipi en el estado de Luisiana.
Fue diseñado y construido por el ingeniero de puentes polaco Ralph Modjeski. E puente era una obra de ingeniería significativa teniendo en cuenta la precariedad del lecho del río. Los primeros ingenieros tuvieron problemas para encontrar un lugar adecuado para hundir las torres masivas. A medida que la magnitud del proyecto se hizo evidente y los costos proyectados se dispararon, las dificultades financieras agravadas por la Gran Depresión retrasaron el proyecto. La construcción del puente se llevó a cabo sin tropiezos durante un período de tres años, con sólo pequeñas interrupciones debido a la marea alta y una huelga de un mes en septiembre de 1933,2 en 2012 fue declarado Monumento Histórico Nacional de Ingeniería Civil por la Sociedad Americana de Ingenieros Civiles.3
Web recomendada: http://www.johnweeks.com/river_mississippi/pages/lmiss16.html
Inserción: 2013-11-27 13:32:22
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