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Contractors World 2012 Volume 3 Issue 2
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USA: Keeping the Mississippi River Bridge on track - page 4 of 4

In summer 2012, crews are expected to start installing the deck, or driving surface, for the main span of the Mississippi River Bridge.

 

The Illinois Approach is one of the largest individual pieces of the Mississippi River Bridge project, after the main span of the bridge.

This section which goes from the main span to the Interstate 70 connector in Illinois, goes over several railroads, the levee system on the Illinois side and nearly a half-mile of flood plain.

   Custom steel brackets and splice plates were used to connect gang forms together. Additionally, a custom aluminum pouring platform was incorporated that MTA installed above +1 platform. The +1 platform provided a secure, lightweight surface and allowed laborers to work safely and easily well above gangs while pouring concrete into each wall cell.

Safety & flexibility

A custom protection screen was used on the outside face of the climbing system as a method to cocoon working platforms, keeping workers safe and comfortable during the harsh weather in the winter. The climbing systems offered MTA a method to easily climb all four legs safely, efficiently and independent from using a tower crane, therefore saving the contractor valuable time and money.

Flexibility of the climbing and formwork systems easily adapted to the bridge geometry and contractor’s requirements. Engineering support, know-how and experience on previous and current bridge projects all over the globe, along with competitive pricing, reassured the contractor’s decision to go with Doka.

Flexibility of the climbing and formwork systems easily adapted to the bridge geometry and contractor’s requirements. Engineering support, know-how and experience on previous and current bridge projects all over the globe, along with competitive pricing, reassured the contractor’s decision to go with DokaWork continues

In summer 2012, crews are expected to start installing the deck, or driving surface, for the main span of the Mississippi River Bridge.

Crews will build a 40-foot long section of the driving surface out of steel on one of the river barges. When the section is complete, they will lift it into place with a crane. Next, workers will bolt the new section into place, attach and tension (tighten) the cables

One of the most striking features of the cable stayed bridge is the cables. This style of bridge is one of the most economical for bridges with wide spans (the space between the bridge’s support structures, which are normally connected to the ground). It is also the most striking of major bridges.

The Illinois Approach is one of the largest individual pieces of the Mississippi River Bridge project, after the main span of the bridge. This section which goes from the main span to the Interstate 70 connector in Illinois, goes over several railroads, the levee system on the Illinois side and nearly a half-mile of flood plain. Work on the Illinois Approach will continue into 2013.

(All images and photographs courtesy of Missouri and Illinois Departments of Transportation or Doka)

Click here for more information >>> Manitowoc crawler cranes
>>> Doka formwork

 

 

 

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Content compiled and edited by:
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Page updated: February 2012

 

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