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Jul 23

Engineering Updates 7/23/2021

Posted on July 23, 2021 at 4:39 PM by Anna Schwichtenberg

City of Owatonna Engineering

Construction has begun and various projects can be seen around The City of Owatonna. Please slow down and use caution when approaching a construction zone.

 We thank you for your patience as these projects are completed. 

2021 Construction Projects:
2021 Project Location Map

26th Street & State Avenue Roundabout: The intersection of 26th Street and State Avenue (County Highways 34 and 45) will be closed for construction starting Thursday, July 29. State Avenue will be detoured via Hoffman Drive (CH 2), I-35, and 46th St NW (CH 9). 26th Street will be detoured via Cedar Avenue, North Street, Hoffman Drive, and I-35. A map showing the project area and detours is attached. The project will replace the existing signalized intersection with a roundabout to improve safety and traffic operations. The project will also improve a rough railroad crossing to the east. The construction is expected to be completed in October. View the full media release here.

 2021 Bridge Street: Work this week was primarily focused on prepping and paving Phase 1, 1A and 1B. Final trimming of the base as well as stringline, dowel baskets and supplemental reinforcement placement occurred on Monday. Concrete paving began on Tuesday with paving the westbound travel lanes including at the I-35 intersection, Wednesday paving continued with the eastbound lanes. While paving occurred, preparation of the Park Drive intersection continued and paving at the intersection began on Thursday. Continued concrete paving at the Park Drive intersection, St. John Drive, and driveways will occur next week. Following this the curb and gutter along with the median will be placed. The new concrete typically takes between 7 and 14 days before it can be driven on so please use extra caution during and after paving is occurring and do not enter the area until the road is open to traffic. Phase 1B is planned to be re-opened on July 26th, 2021 however is dependent on whether adequate strength has been reached in order to facilitate traffic to and from I-35 again. Phase 1A is expected to be complete within 30 calendar days from the start of the phase which results in an expected intermediate completion date of August 5th, 2021. Some continued work is expected to occur within Phase 1 during the week of August 9th with an expected completion of August 13th, 2021.

It is anticipated that new traffic changes will begin the week of August 16th with removals beginning within Phase 2 including the intersection of W. Bridge Street and 24th Avenue. A new detour plan and media release will be sent and detour signage will be updated.

Additional media releases and detour routes are shown here.

To sign up for updates specific to the 2021 Bridge Street Project, please visit Notify Me.

2021 N Cedar Streetscape

Work This Past Week

  • Sanitary sewer main and service construction continued along the 300 block.
  • The signal system at the intersection of Rose Street was prepared for new paint and a few updates within the system.
  • Telecommunications duct bank was and continues to be adjusted as needed ahead of the contractor to prevent utility conflicts.

Upcoming Work

  • Continued sanitary sewer service installation along the 300 block.
    • Access to some buildings may be necessary to confirm services. Communication with businesses will continue to occur as this is required.
  • Continued storm sewer and watermain installation along the 300 block is to follow the sanitary sewer services.
  • Additional street and sidewalk removals along Rose Street will occur. Following removals, the subgrade will be prepared, and aggregate base placed and prepared for the concrete pavement.
  • Late next week or early the following week, concrete paving on Rose Street is anticipated. The new concrete typically takes 7-14 days before it can be driven on so please use extra caution while paving is occurring and do not enter the area until the road is open to traffic.
  • Removals within the 200 block are anticipated to begin early to mid-August

The Owatonna Downtown Live Stream can be found on The 2021 North Cedar Ave Streetscape Project page! Be sure to visit the website for detour routes and alternate parking areas.

To sign up for updates for the North Cedar Streetscape Project, please visit the ISG Project Page, scroll to "Stay Connected" and fill out the form titled "Sign up here for project updates"

2021 Truman Avenue: This week: On Monday and Tuesday of this week, Northland Grading & Excavating worked on Sanitary Sewer construction.  Starting at the intersection of University St. & Truman Ave., they installed one (1) Sanitary Sewer Manhole structure at this intersection and then continued working Southward towards Prospect St. installing 8” PVC Sanitary Sewer Main.   On Wednesday of this week, Northland worked on Storm Sewer construction.  They installed two (2) storm sewer catch basin intake structures at the intersection of University St. and Truman Ave. and installed 15” RCP Storm Sewer pipe as well.  On Thursday of this week, Northland worked on Sanitary Sewer construction again.  They installed 8” PVC Sanitary Sewer Main and one (1) Sanitary Sewer Manhole structure at the intersection of Prospect St. & Truman Ave.  On Friday of this week, Northland worked on subgrade grading and installed 6” Longitudinal Subdrain.

Items of work completed this week in Phase 2 of the project include: Removal of existing Sanitary Sewer main pipe, Installation of two (2) Sanitary Sewer structures, Installation of new 8” PVC Sanitary Sewer main, Removal of existing Storm Sewer pipe & catch basin structures, Installation of new 15” RCP Storm Sewer Pipe, Installation of new Storm Sewer Catch Basin structures, Subgrade excavation and grading, 6” Perf. P.E. Pipe Drain.

Next week: Northland Grading & Excavating plans to begin next week working on new Water Main construction; starting were they left off at the intersection of Phelps St. & Truman Ave. and work Southward towards University St.  After they complete the installation of the new Water Main in this block, they plan to work on installing the new Water Main Services & Sanitary Sewer Services in this block. (Phelps St. to University St.)   Northland also plans to work on sub-cutting the block from School St. to Phelps St.  After sub-cutting is complete, they will begin prepping the subgrade and laying the rock subbase layers.  

Items of work planned for next week in Phase 2 of the project include: Removal of existing Water Main pipe, and Installation of new Water Main pipe, Gate Valves, & Fittings, and Installation of new Water Main & Sanitary Sewer services.

Intersections affected: Northland Grading & Excavating will not be working in the Phase 1 portion of the project next week. Side-road access across Truman Ave. in the Phase 1 portion of the project at the intersections of Agnes St. and Academy St. will be open to traffic and residents via temporary ramps.  Drivers are still encouraged to take alternative routes, if possible, to avoid construction activities in the Phase 1 portion of the project.  

Northland will be working in the Phase 2 portion of the project, from School St. to Prospect St.  Side-road access across Truman Ave. at the intersection of School St. & Phelps St. will remain closed until construction of underground work items at these intersections is completed, backfilled, and aggregate sub-base has been placed.  Side-road access at the intersection of University St. may be temporarily closed next week for work on Sanitary Sewer and Water Main.  Side-road access across Truman Ave. at all other intersections along the project will continue to be maintained for traffic and residents.  Drivers are encouraged to take alternative routes, if possible, to avoid construction activities on the project.

2021 Overlay: Beginning Monday July 26th through July 30th the Street Department will be putting a new blacktop surface on this street. For the duration of this project please keep all parked vehicles off of the affected streets and use an alternate route for travel. The affected streets can be found on this map

To sign up for various department notifications, use the Notify Me feature on The City of Owatonna Website.

To submit a Public Works Maintenance Request, please call 507-444-4350 or fill out an Online Public Works Maintenance Request Form.