Project Vital Statistics

Total Contract Work Completed To Date: 71%

• Temporary BNSF and OTVR railroad tracks (shoo-flies) are operational
• Approximately 70% of excavation has been completed (204,000 cubic yards)
• Approximately 55,000 feet of structural support piling (55% of total contract amount) has been installed
• Bridge construction has begun on 2 of the 3 bridges to be constructed
• The stormwater pumping station is 95% complete

Upcoming Milestones

• Set bridge beams on first 2 bridges - Fall 2020
• Complete OTVR permanent track – late Fall 2020
• A second period of night construction is expected to follow completion of the OTVR permanent track - anticipated Spring 2021
• Construct 3rd bridge – anticipated Summer 2021
• Complete BNSF permanent track – anticipated September 2021

02-2-2 Local Access Summer 2020

Website Page Photo

Major Road Closure/Detour Continues:

Traffic should continue to use either 12 Ave or Highway 10 as an east/west route and 34 St S or 8 St S as a north/south route. Closure of the intersection of SE Main and 20 St|21 St (all directions) will remain in place, likely until October, 2021.

Other Travel Impacts: 

20 St from 8 Ave to 6 Ave is now open, however, 20 St north of 6 Ave remains closed

21 St S from 2 Ave S to 4 Ave S and 4 Ave S from 21 St S to 22 St S is open to traffic, one lane in each direction

Main Ave from 17 St S to 19 St S and 19 St S from Main Ave to 4 Ave S is open to traffic

Oakway and Birch Ln intersection has a temporary roundabout in place

1 Ave S and 12 Ave S detour routes will remain active

02-2-2 Detour Phase 2 UPDATE 072720 no 1st Ave Temp Sig

Project Description

The proposed project will reconstruct and realign the intersection of SE Main Ave and 20 St/21 St to pass under new bridges that will carry the BNSF and Otter Tail Valley Railroad tracks over the streets. The project will result in improvements to safety and congestion for vehicles, bicycles, pedestrians, and emergency services.

The project also includes the construction of new track (called a wye) that will allow direct northbound to eastbound and westbound to southbound train movements. Under existing conditions, trains must travel into the Downtown area, stop, and reverse direction to make these movements. The wye will eliminate delays at the Downtown crossings associated with trains backing up. Construction of the wye will require the closure of 1 Ave S near the wye track.

Project Layout

Proposed Layout

City Contacts

Tom Trowbridge, Assistant City Engineer
General Construction Questions 218.299.5395

Jon Atkins, City Traffic Engineer
Detour and Traffic Concerns 218.299.5388

Levi Hockett, City Inspector
Specific Construction Questions 218.299.5396

For Other Inquiries
Contact the Engineering Department

Additional Information 

Animated Depiction of 20th & 21st St/SE Main Avenue Grade Separation Project

20 & 21 St/SE Main Ave Grade Separation Project Layout

May 23, 2018 - Public Info Meeting, Slide Show Presentation - SE Main Ave 20/21st St Railroad Grade Separation Project

May 29, 2018 - Public Hearing, Slide Show Presentation - SE Main Ave 20/21st St Railroad Grade Separation Project

July 11, 2018 - Community Information Meeting - SE Main Ave 20/21st ST Railroad Grade Separation

July 16, 2018 - Underpass Ground Breaking Ceremony - SE Main Ave 20/21st ST Railroad Grade Separation 

SE Main Construction Photos

Updated on 01/28/2021 12:40 pm

These photos show the construction process in the SE Main|20 St|21 St Railroad Underpass Project.