Major Sewer Improvement Effort

South Rillito Interceptor

The award winning South Rillito Interceptor (SRI), is an $11.5 million project, which spanned from Columbus Boulevard to Tucson Boulevard along the south side of the Rillito River. The project was completed 3.5 months ahead of schedule and under budget.

The RWRD's South Rillito Interceptor is another major interceptor with additional capacity, which runs along the south side of the Rillito River, parallel to the NRI. The SRI rehabilitation project began in an area near Columbus Boulevard and runs west for 3.9 miles along the south side of the Rillito River to the intersection of Roger Road and Tucson Blvd. Construction was completed in three phases.

Click any of the maps on this page to download/view a PDF version with greater detail.

Phase 1

Phase 1 Map (SRIWC #3) »

Phase 2

Phase 2 Map (SRIWC #2) »

Phase 3

Phase 3 Map (SRIWC #1) »

Pima County