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Longfellow Bridge

Owner - MassDOT

Date Completed - 2013-2018

General Contractor - White-Skanska-Consigli 

Project Type - Bridge Rehabilitation

Location - Boston, MA

The Longfellow Bridge spanning between Boston's historic Beacon Hill and Cambridge was built with granite and steel in 1908. In the last century the bridge has been expanded and rehabbed but in recent years there has been deterioration of the structural components. MassDOT hired the joint venture of White-Skanska-Consigli to restore the structural integrity of the bridge while maintaining its historical architecture.

It has been decades since rivets have been used in bridge construction yet they play an important role in architectural integrity and aesthetic of historic bridges. 

Finding a safe yet cost-effective way of replacing more than 50,000 worn rivets in the Longfellow Bridge was a challenging task but we were able to do so using a proprietary method in our fabrication shop.

2019

PRESERVATION AWARD
Massachusetts Historical Commission

2019

PUBLIC WORKS PROJECT OF THE YEAR

Historical Restoration/Preservation,

More Than $75 Million  
American Public Works Association

2019

PRESERVATION ACHIEVEMENT AWARD 
Boston Preservation Alliance

 
 

Green Line Extension

Date Completed - Ongoing

Owner - MBTA

General Contractor - GLX Constructors

(Fluor, Middlesex, Herzog, & Balfour Beatty)

Project Type - Structural - Install

Location - Green Line

(Somerville, Cambridge, and Medford)

The GLX project is over $2 billion and Atlantic Bridge has been hired to construct the steel superstructure for the elevated tracks.  The project originally started about five years ago and Casco Bay began fabrication of the structural steel. The project eventually came to a halt as projections of the cost became too high. 

Today, the project continues on under a new joint venture with alterations from the original plans. This has created a unique challenge. We would like to use the original steel members under the new plans to keep the project under budget, while maintaining the structural integrity of the super structure. We are working closely with Casco Bay, GLXC, and the project engineers to make the existing fabricated steel work.

As it is with every project, safety is our number one concern on the GLX project. In addition to our usual safety protocol, we have sent all of our iron workers through GLX orientation, Keolis RWP Training, all of our foreman to Safety Leadership Training, and are maintaining a safety officer onsite throughout all progress of the work. In doing this we hope to keep all of our employees safe and the job continuing on time. 

 

Manhattan Bridge

Owner - NYDOT

Project Type - Furnish Miscellaneous Steel

Location - New York, NY

Date Completed - 2018-2019

General Contractor - Skanska

Skanska was awarded the job of replacing corroded steel, the rosettes ringing of four decorative globes, installing new cornices, swapping out deteriorated brackets, rehabbing trench drains, and repairing the south walkway fence of the Manhattan Bridge. Skanska hired Atlantic Bridge to fabricate 60'x20' movable platforms to help facilitate this work. 

 

Chelsea Commuter Rail Station

Date Completed - Ongoing

General Contractor - AA Will

Owner - MBTA

Project Type - Structural Steel & Misc. Metals - Furnish & Install

Location - Cambridge

“This is a key investment in our Commuter Rail infrastructure that will allow for faster boarding and improved accessibility for people of all abilities,” said MBTA General Manager Steve Poftak. “Once complete, the new station will serve as a multimodal connection that will give our customers the choice of traveling to North Station on the Commuter Rail or South Station on SL3 from a single point.”

Atlantic Bridge has been hired by A.A. Will to install the new station platform comprised of FRP Decking, fabricate & erect numerous canopies and windscreen frames, install 2,000+ feet of guardrail, among other misc. metals.

 

Fore River Bridge

Date Completed - 2017-2018

General Contractor - Skanska

Owner - MassDOT

Project Type - Structural Steel

Location - Quincy & Weymouth, MA

The project scope grew beyond the structural steel as two companies went out of business and one company left the joint-venture. Atlantic had to assist completing the fabrication and ended up completing the installation of all misc. metals work. The joint-venture relied on Atlantic to keep inventory of and track fabrication errors of the steel that had already been fabricated prior to Atlantic taking over the work.

This project stands out in Atlantic’s history as one of the most unique challenges. In 2012, MassDOT commissioned a 250’ high vertical lift bridge to meet the demands of ship traffic in the Weymouth Fore River. A temporary bridge between Quincy and Weymouth had been erected in 2004 to replace the unsafe existing bridge and had to remain in place during construction. To accommodate this, Atlantic assembled the lift span on a dry dock half a mile upriver and then floated it down on barges. They then used a combination of the tides and flooding the barges to set the span in place. Once the lift span was in position, Atlantic strung up cables to the machine room and down to the counterweight. The counterweight was then jacked up and removed from the temporary pins, suspending from the cables. Erecting the approach slabs presented their own problem as they had to be coordinated with the removal of the temporary bridge to minimize traffic downtime. This delayed setting some of the girders but ultimately went smoothly. 

 

Headquarters

150 High Street
Hampton, MA 03842
P: 603-601-7487
F: 603-601-7983

Fabrication Facilities

378 South Road
Candia, NH 03034
40 Elmo Lane
Rochester, NH 03867

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