1st St N Tunnel Repair over Basset Creek
In 2020 the city of Minneapolis will rehabilitate the 1st St N Tunnel over Bassett Creek. This rehabilitation project will extend the service life of the existing tunnel. The biggest construction constraint for this project will be time of construction due to the water levels rising and falling with the Mississippi River. Completing the work when the water is the shallowest will accelerate construction and reduce the price.
Access to the site is restricted to a manhole at 2nd St N and 8th Ave N and the outlet to the Mississippi River. To deliver materials and workers through the manhole a crane is required. Thus closure of the parking lane and the sidewalk on the that side of the road will be required to complete the work.
The Project will concentrate on the bridge over 1st St N between 8th Ave N and 4th Ave N in the tunnel. The above tunnel work will only be for access and delivery at a manhole located on 2nd St N and 8th Ave N.
The bridge is part of a continuous tunnel system over Bassett Creek.
Fall 2020 - Construction is tentatively scheduled to begin on October 12, 2020.
Winter 2020-2021 - Anticipated completion of project
A more detailed look
October 21, 2020 - Project start and mobilization
October 28, 2020 - Install bypass system
November 4, 2020 - Concrete removals
November 11, 2020 - Install reinforcement
November 18, 2020 - Form and pour walls
November 30, 2020 - Install liner plate and castings
December 14, 2020 - Backfill grout
December 18, 2020 - Demobilization
January 15, 2021* - Project completion
*Pushed back from original completion date of December 24, 2020
Due to the nature of the work mostly taking place beneath the ground in the tunnel, major traffic impact is not anticipated. Access to the project is through a manhole on 2nd St N near 8th Ave N and requires a crane to lower materials and laborers to the tunnel. To provide that set up the parking lane and sidewalk on 2nd St N would need temporary closures throughout the life of the project.
Traffic restrictions around the access manhole
Parking restrictions in the project area
For more details about posted traffic signs around the project, see the traffic control plan for the 1st St N Tunnel Repair project.
Bi-weekly stakeholder meetings
Project staff will holding stakeholder meetings that are open to the public every two weeks, starting Friday, November 13, 2020, and continuing until April 16, 2021.
Bi-weekly Stakeholder Meeting
Every other Friday
11:00 a.m. - 11:30 a.m.
The tentative dates included are listed below:
- November 13
- November 27
- December 11
- January 8
- January 22
- February 5
- February 19
- March 5
- March 19
- April 2
- April 16
How to join
Join the meeting using the link below:
If no one joins the meeting within 15 minutes the meeting will end, but you can still contact me via phone or email.
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January 15, 2021
This project has been completed.
December 14, 2020
The completion date has been moved back to January 15, 2021.
March 13, 2020
Contract has been awarded to the lowest responsible bidder PCI. The city is in the process of meeting with the contractor to verify construction details.
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Abdullahi Abukar, Engineer; 612-673-2463 or [email protected]
Last updated Jan 20, 2021