Sanitary Sewer System Rehabilitation and Improvements – Contract 1

The City of Portsmouth, NH is requesting sealed bids for Sanitary Sewer System Rehabilitation and Improvements – Contract 1 . Bids are to be submitted electronically via the eProcurement Portal at https://procurement.opengov.com/portal/cityofportsmouth before 2:00 pm on Thursday, January 29, 2026 . Late responses will not be accepted.

This project includes sewer pipe and manhole rehabilitation work including, but not limited to: light or heavy cleaning and CCTV inspection of approximately 3,020 linear feet of sewer main and 9 lateral inspections; chemical root treatment of 980 liner feet of sewer main, cutting 5 intruding laterals, testing and sealing 210 mainline joints, grouting 8 laterals, installation of approximately 4,700 linear feet of cured-in-place pipe for pipe sizes 6-inches to 12-inches in diameter; 5 open cut spot repairs of for 8-inch diameter sewer pipes; 3 full length sewer pipe replacements; various manhole rehab including cementitious and epoxy coating of manholes, curtain grouting, rebuilding benches and inverts, raising manholes to grade, removing and replacing manhole frames and covers, and chemical root treatment of manholes.