Marine Division

Setting standards in

Undersea Pipelines

When the discovery and production of oil and natural gas moved out to sea, Associated was among the first construction companies to build the pipelines to bring products ashore. Across swamps and marshlands, estuaries and bays, and out to sea in water depths up to 35 feet, Associated has set the standard for marine pipeline construction.

Associated’s Marine Division has constructed more than 2,000 miles of undersea pipelines in its long history. These pipelines range in size from 4 to 48 inches in diameter, and were installed in locations as diverse as the relatively calm coastal waters of the Gulf of Mexico, to the extreme tidal waters of Cook Inlet and Turnagain Arm in Alaska. Whatever the challenge, and marine environment, Associated has a proven record of marine construction excellence.

Pictured at left is an aerial view of Associated’s Marine Division office and warehouse, and its land and marine equipment storage yard, located on the Bayou Bouef near Morgan City, Louisiana.

View Past Projects


Recent Projects

Columbia Pipeline Group

Perry, Fairfield, Hocking, Vinton, Noble, Muskingum, Morgan, Perry Counties, OH

88 Miles


Cheniere CCPL

Nueces, San Patricio Counties, TX

21.6 Miles

36-Inch, 48-Inch

Texas Eastern Transmission LP

Columbiana, Carroll, Jefferson Counties OH

29.5 Miles


Columbia Pipeline Group

Gloucester County, NJ

9.6 Miles


National Fuel Gas Supply Corp.

Washington, Beaver Counties PA

23.5 Miles