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The Downtown Sewer Upgrade will involve construction of five blocks of new 60-inch diameter combined sewer pipeline on 9th Street from G to L streets as well as thirteen blocks of new 42 to 48-inch diameter combined sewer pipeline on 3rd Street from I to U streets. Construction along each of the corridors will consist of both open cut and tunneling activities. The City is utilizing both methods in an effort to minimize impacts during construction.

Graphic describing open cut method

Paving graphic

Project News

Crews continue to work Saturdays and longer weekday shifts to complete remaining work as soon as possible. Remaining sewer laterals and storm drain work is occurring block by block on the east side of 9th Street from I to L streets using temporary traffic control cones that are setup and taken down each day. Check out the project map for details regarding upcoming wrap up activities. Final grinding and paving for the entire corridor is expected to occur October 15-18 (starting at L Street and working north) and be complete by late October/early November. Bike lane striping/painting and final work activities will occur the week of October 29. Note: Work hours for grinding & paving activities will occur at night from 7 p.m. to 7 a.m. and will require traffic detours.


The Downtown Sewer Upgrade will provide relief from existing conditions and planned development on an over-taxed and aging Combined Sewer System (CSS). This existing system provides sewer and storm drain needs for 7,500 acres in the City including Downtown, East Sacramento, River Park, Land Park, Curtis Park, and Oak Park neighborhoods.

Once complete, the Downtown Sewer Upgrade will provide the following improvements:

graphic showing benefits of sewer upgrade.