The sewer pipe on Central Street generally consists of clay pipe installed in 1938. The water pipe generally consists of cast iron pipe installed in 1906. The sewer pipe is mostly located in the street but crosses through two off-road areas, which make access for maintenance difficult. Both pipes, due to age and material, present a significant risk for failure.
Design efforts began in 2019 with closed-circuit television (CCTV) evaluation of the existing sewer and drainage pipes to determine if trenchless cured in place pipe (CIPP) lining would be an appropriate approach. CIPP lining would reduce the extent of excavation and disturbance to the street and would be a less expensive option for repairing the sewer pipe. Other initial design efforts included survey, geotechnical testing, and evaluation of relocating the pipes from off-road areas back into the street. Funding was approved for the design of water and sewer rehabilitation. Design work will continue through 2020 and the beginning of 2021. Funding will be requested for the construction of this project.
The project includes the replacement or rehabilitation of approximately 2.5 miles of water main and 2 miles of sewer main on Central Street, as well as the replacement of the water main on Kellogg St. The goal of the project is to improve service conditions, mitigate problem areas before failures occur, and reduce maintenance issues due to old infrastructure.
Preliminary design work is complete and includes soil and pavement investigations and evaluations, wetland identification, closed-circuit television camera of existing sewer and drainage pipes, and surveying. The design of water and sewer rehabilitation or replacement has progressed to 90%.
Construction is contingent upon funding and will be completed in phases due to the project's scale and to mitigate impacts to residents. Phase 1, which would include the rehabilitation of sewer infrastructure, is on hold due to funding constraints. There is currently no funding available for the design/construction of drainage, sidewalk, or roadway improvements.