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Published June 4, 2026 at 8:00 PM
Updated June 5, 2026
Demolition, site work, paving and new construction of a bridge / tunnel in Duluth, Minnesota. Working plans call for the demolition of a bridge / tunnel; for the construction of a bridge / tunnel; for site work for a bridge / tunnel; and for paving for a bridge / tunnel.
Provide an interstate highway connection across the St. Louis Bay that does not restrict the movement of freight and provides local, regional and international movement in a reliable and efficient manner. Primary needs • Bridge condition: Truss and approach span deterioration • Vehicle safety: Above-average crash rates, tight ramps on the Wisconsin side, level of service, geometric influences and weather influences • Vehicle mobility: Traffic operations, load restrictions in place, cannot accommodate oversize, overweight loads and freight Secondary needs • Walkability/bikeability Additional considerations • Maritime freight navigation • Consistency with regional plans • Social, economic and environmental considerations As of June 4, 2026, the final design is scheduled from mid 2026-2027, with phased construction slated to begin fall of 2026-2032. The complete bridge closure for approximately four-five years beginning in early 2027. However, no firm timelines have been established.
Final Planning
Bridges / Tunnels
$1,800,000,000.00
Public - State/Provincial
Demolition, New Construction, Paving, Site Work
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June 1, 2027
I-535, Duluth, MN
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