Minnesota Department of Transportation

511 Travel Info

I-35, I-535, Hwy 53 Twin Ports Interchange


About this project

This map shows the location of Twin Ports Interchange improvements in Duluth, which include the reconstruction of the I-35/I-535/Hwy 53 interchange.

Once completed, this project will enhance safety by eliminating blind merges and left exits, replace aging infrastructure, and better accommodate freight movements through the interchanges next to the Clure Public Terminal.

Due to higher costs than estimated, Component 2 (Highway 53 bridges) and Component 3 (Garfield Avenue/I-535 interchange) are deferred until funding is secured. In November of 2019, it was announced that the project as a whole would be deferred one year. Some construction will begin this fall, but the public will not see significant traffic impacts until the spring of 2021. Next spring, the project will move forward with I-35 traffic in single lane configuration. In the fall, northbound traffic will remain on I-35, and southbound traffic will be moved to Lower Michigan Street as planned.

Summary of work

Reconstruct I-35/I-535/Hwy 53 interchange to improve safety by:

  • Providing a new conventional design
  • Relocating all exits and entrances to the right side of the roadway
  • Improving merging sight distance and eliminating merge conflicts
  • Eliminating weaving problems near the interchange
  • Providing lane continuity for through I-35 traffic

Time-lapse camera

We have installed a time-lapse camera focused on the 27th Avenue West bridge project. View it here. The camera posts an updated photo every two minutes. Click on camera 2 and on the photos to enlarge and zoom in on the project. At different points throughout the project, we will collect the photos and create a video. Thank you to Lamar for the use of their billboard. We will have a second camera mounted on the Garfield Avenue overpass for a different view of the project next spring.

Animation video

See what the freeway will look like when completed from a motorist’s view heading north on I-35 through the Twin Ports Interchange area, then heading to southbound I-35 from I-535, or the Blatnik Bridge, through the Twin Ports Interchange area.

Freight connection


Current interchange at I-35, I-535 and Hwy 53

This project will provide direct access for overweight permitted loads.

Interchange traffic count:

  • Average annual daily traffic – 80,000
  • Heavy commercial average annual daily traffic – 5,320

Provides first- and last-mile connection to the Clure Public Terminal, an intermodal facility with highway, rail and waterway freight connections

October 2020 to early-spring 2021