HBK Engineering, LLC (HBK) designed, permitted and provided construction support services for a 1.1 mile gas main to serve the Southeast Side of Chicago. This installation was completed in lieu of complete replacement of the Calumet 2 high-pressure pipeline. This design included two trenchless crossings:
- A 1,700 foot Horizontal Directional Drill across the Calumet River
- A 270 foot jack and bore underneath three sets of railroad tracks
The HDD was designed to be drilled within the bedrock beneath the Calumet River, at a depth of approximately 90 feet below the water surface. This design was chosen to avoid the existing deep foundations of the 106th Street Bridge.
Jack and Bore Design:
The proposed running line crossed three sets of railroad tracks, requiring a jack and bore installation
The eastern portion of the project consisted of a connection to an existing 36-inch high-pressure transmission main, which will feed a proposed HP-MP station. The remainder of the line, including the HDD and jack and bore, operates at medium pressure.
Plan and profile of the western half of the Calumet River HDD installation
Installation and welding of 16″ Steel Gas Main