Williams Partners LP and its wholly owned subsidiary Transcontinental Gas Pipe Line Co. LLC announced a fully contracted expansion project designed to deliver gas along the Eastern Seaboard.

Known as the Garden State Expansion project, the $150 million project consists of additional compression to provide 180,000 dekatherms per day of firm natural gas transportation service. The planned expansion route is from Transco’s Zone 6 Station 210 Pooling Point in Somerset County, N.J., to a new interconnection on Transco’s Trenton Woodbury Lateral in Burlington County, N.J.

Williams Partners expects the project to enter service in phases, with the first phase coming online in 2016 and the second in 2017, assuming timely receipt of necessary regulatory approvals.