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Maryland Transportation Authority - BAYBRIDGE (US 50/301)

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Bay Bridge Preservation Project [Explore the Bridge]

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BAY BRIDGE RE-DECKING REACHES FINAL MILESTONE

NOTE: This summer, other preservation/maintenance work and dismantling of the re-decking work zone will continue during scheduled off-peak daytime and overnight hours to minimize impacts.

last deck panel removed

The Maryland Transportation Authority (MDTA) reports that crews successfully installed the last new deck segment of the Bay Bridge (US 50/301) Preservation Project on April 22, 2010. This marks the culmination of a long-term effort to extend the life of the bridge’s westbound span by re-decking the suspension-span and through-truss (where drivers see structural steel overhead) sections with 300 pre-cast concrete deck segments.

“This massive job has been completed successfully with the cooperation of commuters, neighboring communities, the citizen members of the Bay Bridge Reconstruction Advisory Group, contractors and the professional team at the MDTA,” said MDTA Chairman and Transportation Secretary Beverley K. Swaim-Staley.

Temporary steel roadway plates, which are needed to reopen the bridge following overnight construction, were removed from westbound travel lanes on May 2.

“I cannot be more pleased with the results of this project,” said MDTA Executive Secretary Ronald L. Freeland. “The bridge opened late to rush-hour traffic one time in more than two-and-a-half years of re-decking construction. In upcoming weeks, crews will continue finishing work, including deck grinding and grooving that will smooth out the ride for our motorists.”

The Bay Bridge Preservation Project began in December 2006 and is targeted for completion this fall. The new, full-depth roadway deck segments -- 144 suspension span and 156 through-truss segments -- along with new railing and overhead lane signals, spot painting and electrical upgrades comprise the preservation project.

Click here for weekly scheduled lane closure information.  

Supplemental Preservation Project Information

The following display boards provide supplemental information regarding the Bay Bridge Preservation Project:

Preservation Work

Deck Replacement Overview

Preparing for Deck Replacement

Demolition/Installation

Deck Panel Demolition/Installation

Deck Demolition

Deck Installation

Deck Unit Completion

Re-opening to Traffic

Other Project Work

Protecting the Environment

Oyster Reef

Project Schedule/Stay Informed

Deck Segment Pre-fabrication

Safety

Through-Truss Deck-Replacement 

Below is a pictorial exhibit of what occurred during nightly through-truss span deck-replacement efforts.

First deck removal in westbound through truss

first deck removal in westbound through truss

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Torch cutting the steel railing and scrubbing clean the tops of the steel stringers

cutting steel railingScrubbing clean tops of steel stringers  

Close-up of concrete "crab" removing deck and stacking old deck pieces for transport off bridge

concrete crabstacking old deck

Specially designed trailer moves new deck into position and new deck is lowered into place

trailer moves panel into placenew panel put into place

Deck Fabrication Off-Site = Less Disruption of Bridge Traffic

To keep bridge traffic moving as smoothly as possible, replacement concrete roadway panels ranging from 15 to 49 feet in length and weighing 43,000 to 90,000 pounds each were prefabricated off-site by American Bridge at Sparrows Point near Baltimore. In all, 144 Suspension and 156 Through Truss roadway panels were installed. The panels traveled by barge down the Chesapeake Bay and were transported by trucks onto the bridge for installation.  

Below is a pictorial exhibit of the final work undertaken at the casting yard.  The last concrete pour occurred on July 14, 2009.

The last pour and final concrete truck

last pour

last concrete truck

Removing the final segments from the casting yard and getting ready to lift the panel onto the barge

Lifting the final segments  Lifting onto barge

Loading the panel onto the barge

loading panel onto barge  panel on barge

Suspension Span Deck-Replacement 

Below is a pictorial exhibit of what occured during nightly suspension span deck-replacement efforts.

New Railing Installation

 

 

  

 Steel Cuts and Preparing for Demolition

prep 1prep 2

Deck Demolition

Demolition 3Demolition 4

demolition 5

 

 

 

 

 

 

 

Placement of new Deck Panel

new plates 1New plates 2

new plates 3new plates 4

Tightening New Deck Unit and Pouring Concrete Closure

closure pour 1

closure pour 5

 

 

  

  

  

  

Protecting the Environment

During all aspects of the project, processes were in place to protect the environment, including installation of shielding underneath the bridge to protect the Chesapeake Bay from construction debris.

 

Stay informed! For round-the-clock, real-time Bay Bridge traffic information, call 1-877-BAYSPAN (229-7726).

Stay Informed and Be Safe


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