Major Sewer Improvement Effort

Latest News

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SEI Project: Osborne Avenue Closure Postponed

Osborne Avenue, 20th Street and La Paz
March 15, 2017

The closure of Osborn Avenue at its intersection of La Paz Avenue has been postponed until Monday, March 27, 2017 and Tuesday, March 28, 2017 from 6 a.m. to 3 p.m. each day.

All other restrictions related to the Osborne Avenue work (see below) will remain in place through Friday, March 31, 2017 while Pima County and its contractor install an 8-inch diameter sewer line along Osborne Avenue. Residents and businesses in the area should use 10th Avenue as an alternate route during this work.


View details: pdf

SEI Project: Osborne Avenue Closure

Osborne Avenue, 20th Street and La Paz
March 10, 2017

On Monday, March 13, 2017 and Tuesday, March 14, 2017, from 6 a.m. to 3 p.m. each day, Osborn Avenue will be closed at its intersection with 20th Street, and on Thursday, March 16, 2017 and Friday, March 17, 2017 from 6 a.m. to 3 p.m. each day, Osborn Avenue will be closed at its intersection with La Paz Street, these temporary, day-time only closures will be in place to allow the contractor to safely trench across Osborne Avenue at these locations.  All other restrictions related to the Osborne Avenue work (see below) will remain in place through Friday, March 31, 2017 while Pima County and its contractor install an 8-inch diameter sewer line along Osborne Avenue. Residents and businesses in the area should use 10th Avenue as an alternate route during this work.
View details: pdf

SEI Project: Osborne Avenue Closure

Osborne Avenue, Armijo Street to 21st Street
February 24, 2017

Beginning at 7 a.m. on Wednesday, March 1, 2017 through Friday, March 31, 2017, southbound travel along Osborne Avenue will be closed from just north of Armijo Street to 21st Street while Pima County and its contractor install an 8-inch diameter sewer line along Osborne Avenue. Residents and businesses in the area should use 10th Avenue as an alternate route during this work.

>>View Map
View details: pdf

SEI Project: Sewer Install at 29th Street

29th Street, I-10 to 12th Avenue
February 10, 2017

Beginning at 6 a.m. on Monday, February 13, 2017 through 4 p.m. Friday, February 24, 2017, Pima County and its contractor will install a 42-inch diameter sewer main across 29th Street. East and westbound traffic along 29th Street, between the northbound I-10 frontage road and 12th Avenue, will be shifted back and forth to accommodate large equipment and trenching activities. Once the 42-inch sewer main is installed, the contractor will repave the disturbed portion of roadway.
View details: pdf

SEI: January 25 Open House Materials

Segment 2
January 26, 2017

SEI Full Project Fact Sheet 

Segment 2 Open House Presentation

SEI Segment 2 Fact Sheet 
View details: pdf

Pima County