Major Sewer Improvement Effort

Latest News

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SEI Project: 36th Street Closure

36th Street, just east of 2nd Avenue
April 28, 2017

On Monday, May 1, 2017, the contractor will begin work to install a 36-inch sewer pipe, inside a 54-inch casing under the Union Pacific Rail Road (UPRR) that crosses 36th Street just east of 2nd Avenue (jack and bore operation). In order to accommodate the extensive excavation required to complete the work, 36th Street from South 2nd Avenue to just east of the UPRR, will be closed to all traffic. Access to businesses will be maintained from either side of the track. East and westbound through travel on 36th Street should use 29th Street/Silverlake Road or the I-10 frontage road as alternate routes. This closure will be in place 24-hours a day, 7-days per week, until early June, 2017. (See map)
View details: pdf

SEI Project: 36th Street Closure

36th Street, west of 6th Avenue
April 19, 2017

On Thursday, April 20, 2017, the contractor will begin work to install a 54-inch steel casing to accommodate the 36-inch sewer pipe under 6th Avenue (jack and bore operation) at its intersection with 36th Street. In order to accommodate the extensive excavation required to complete the work, 36th Street, west of the 6th Avenue intersection, will be closed. The jack and bore operation will be followed by open trench excavation to complete the installation of 36-inch sewer pipe between the Union Pacific Rail Road and 6th Avenue. Work is expected to be completed near the 36th Street and 6th Avenue intersection by mid-July 2017.
View details: pdf

SEI Project: 18th Street Closure

18th Street, 11th Avenue to I-10
March 31, 2017

On Monday, April 3, 2017 the contractor will begin work to install three large-diameter pipes and two manhole structures on 18th Street just west of the Tucson Water Plant 1 facility. Because of the large excavation required to complete the work, 18th Street will be closed to through traffic from 11th Avenue to the northbound I-10 frontage road (see attached map). This closure will remain in place through the middle of May 2017.
View details: pdf

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

Pima County