Minnesota Department of Transportation

511 Travel Info

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

Duluth

Technical documents

The files below include technical and engineering documents that were prepared to inform the development of alternatives and are made available for grant applications and contractor information.

See Maps and Engineering for current layouts and project information.

Note: some of these files are large and may take some time to open.

Right of way mapping and titles (PDF)

Regulated waste assessments (PDF)

Phase 1 environmental (Word)

Traffic counts and modeling (PDF)

Subsurface Utility Engineering

Noise (PDF)

Foundations work (PDF)

Preliminary layouts (PDF)