Guernsey WY Water Line

CCI Trenchless was entrusted with the installation of a 24-inch steel casing beneath both a local highway and the main rail yard in Guernsey, Wyoming. The project required the installation of 770 feet of casing, including a record-breaking 640-foot auger bore under the railway—making it the longest auger bore completed by CCI to date.

A particularly innovative aspect of this project was the profile design of the drive. To avoid the need for costly rail monitoring on each of the 10 tracks during the crossing, CCI Trenchless devised a unique approach. The casing was installed on a 1% slope for the first 500 feet, after which the steering head was adjusted to complete the bore at a 5% slope. This precise technique ensured that the casing met the strict depth requirements mandated by BNSF under their critical rail lines, while also aligning perfectly with the design elevation at the tie-in location.

This approach not only minimized costs but also simplified the complexities of working in and around an extremely busy rail yard. By maintaining depth accuracy and reducing the need for extensive surveying, CCI delivered a successful project that met all safety and technical requirements, while also providing significant cost savings to the City of Guernsey.