North Extension of East Sewer Interceptor Project

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This project includes installing approximately 8,600 linear feet of new 18-inch sanitary sewer pipeline to improve wastewater infrastructure and support long-term system reliability in the area. Construction will involve both traditional open-cut installation methods and trenchless boring techniques to minimize impacts at key roadway crossings, including Weld County Road 74 and CO 257.

The project scope also includes the construction of 32 new manholes, connection to an existing sewer structure, pavement removal and replacement, and full restoration of disturbed landscaping and surface areas to pre-construction conditions following completion of the work.

As of Wednesday, Nov. 4., nearly 2,500 linear feet of the pipeline has been installed, including manholes. Tunnel 1 work begins at the intersection of Weld County Road 72 and CO 257 on Monday, Nov. 9. Following the completion of this portion, construction will begin on Tunnel 2 at the intersection of Weld County Road 74 (Harmony Rd.) and CO 257.

This project includes installing approximately 8,600 linear feet of new 18-inch sanitary sewer pipeline to improve wastewater infrastructure and support long-term system reliability in the area. Construction will involve both traditional open-cut installation methods and trenchless boring techniques to minimize impacts at key roadway crossings, including Weld County Road 74 and CO 257.

The project scope also includes the construction of 32 new manholes, connection to an existing sewer structure, pavement removal and replacement, and full restoration of disturbed landscaping and surface areas to pre-construction conditions following completion of the work.

As of Wednesday, Nov. 4., nearly 2,500 linear feet of the pipeline has been installed, including manholes. Tunnel 1 work begins at the intersection of Weld County Road 72 and CO 257 on Monday, Nov. 9. Following the completion of this portion, construction will begin on Tunnel 2 at the intersection of Weld County Road 74 (Harmony Rd.) and CO 257.

Page last updated: 06 Nov 2026, 12:40 PM