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Ameren Exposed 12-Inch Steel Transmission Main Replacement

Mount Sterling, Illinois

Based  in  Collinsville,  Illinois, Ameren  Illinois  is  a  regulated  electric  and  gas  delivery  company  in  the business of energy distribution. Ameren’s parent company, the Ameren Corporation, is based in St. Louis, Missouri. Ameren Illinois’s service territory spans 43,700 square miles, approximately three-quarters of the state.

Every day, Ameren delivers to its 806,000 natural gas customers in more than 1,2000 communities throughout central and southern Illinois. The Ameren complex delivery includes approximately 45,400 miles  of  distribution  pipeline;  18,000  miles  of  natural  gas  transmission  and  distribution  main;  and  12 underground natural gas storage fields.

Milhouse began working with Ameren in 2015 to provide engineering  design  of  an  approximately  800-linear-foot (LF)  horizontal directional drilling (HDD)  design  to  replace  an  exposed  12-inch steel  gas transmission line south of U.S. Route 24 near Mt. Sterling, Illinois.

Milhouse’s scope on this project includes:

•  Preparing HDD plan and profile
•  Piping and mechanical layout
•  Drawings and details
•  Engineering cost estimates
•  Hydrotest calculations
•  Construction site maintenance, including a four-inch bypass line

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