Minnesota Highway 52 Construction Alert 2026: I-90 Interchange Detours and Lane Closures

Quick Summary

• Project Scope: The Minnesota Department of Transportation (MnDOT) is in the final year of a multi-year reconstruction of the Highway 52 and Interstate 90 interchange southeast of Rochester.
• Active Closures: Work includes the demolition of the westbound I-90 bridge over Highway 52, requiring single-lane configurations and ramp closures.
• Detour Routes: Southbound Highway 52 travelers are being rerouted through Stewartville via Highway 63, while northbound drivers are utilizing Olmsted County Road 7.
• Travel Advice: Motorists should expect significant delays during peak hours and are urged to use 511mn.org for real-time traffic updates.

Road travelers in southeastern Minnesota are facing major infrastructure resets in May 2026 as MnDOT completes the third and final year of the I-90/Highway 52 interchange project. This key north-south corridor, vital for travelers heading between the Twin Cities, Rochester, and the Iowa border, is currently a high-activity work zone. With bridge demolitions and new flyover connections under construction, drivers must navigate a complex series of detours and changing traffic patterns. Understanding these routes is essential for road trippers and commercial operators aiming to avoid frustration and ensure safety in the Land of 10,000 Lakes.

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Highway 52 / I-90 Interchange Project: 2026 Construction and Detour Guide

The final phase of reconstruction aims to improve safety and modernize the aging ramp structures near Rochester.

Direction / Road	Current Impact	Recommended Detour Route
Southbound Hwy 52	Closed at interchange	Hwy 63 South to Stewartville → I-90 East
Northbound Hwy 52	Rerouted south of Marion	Olmsted County Road 7 → I-90 West → Hwy 52 North
Westbound I-90	Single-lane configuration	No detour; expect stop-and-go traffic
Eastbound I-90	Ramp access changes	Use earlier exits to connect to Hwy 52 North
I-90 Bridge	Demolition in progress	Rerouted over temporary alignments
Overall Timeline	Final Phase (Year 3)	Substantial completion expected late 2026

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Multi-Year Reconstruction: Final Phase Activities 2026

Since the project’s inception in 2024, MnDOT has worked to redesign the Highway 52 and Interstate 90 interchange to reduce crash risks and congestion. In April 2026, crews began the critical task of demolishing the westbound I-90 bridge. This has necessitated single-lane traffic on the interstate and the closure of several key on-ramps. The 2026 updates are the most disruptive yet, as the final flyover connections and ramp loops are integrated into the regional traffic flow.

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Southbound Highway 52 Detours: Route via Stewartville

Southbound travelers approaching the construction zone from Rochester are currently redirected to bypass the closed interchange.

• Primary Detour: Exit Highway 52 onto Highway 63 southbound toward Stewartville.
• Connecting Route: Follow Highway 63 to eastbound Interstate 90 to return to the main Highway 52 corridor.
• Long-Distance Travelers: For those heading toward Chatfield or Preston, MnDOT recommends exiting I-90 at Exit 224 (Eyota) and using Olmsted County Road 7 to reconnect further south.

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Northbound Highway 52 Detours: Route via Olmsted County Road 7

Drivers heading north toward Rochester or the Twin Cities must exit Highway 52 south of the Marion area.

• Diversion Point: Exit Highway 52 and travel onto Olmsted County Road 7.
• Interstate Connection: Travel west on Interstate 90 to rejoin northbound Highway 52 at Exit 217 in Rochester.
• Operational Note: This loop ensures that through-traffic avoids the most active bridge demolition sites while maintaining a relatively efficient flow toward the Twin Cities gateway.

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Impact on Interstate 90 Travelers

Trans-state travelers using I-90 also face adjustments. Westbound traffic is currently funneled into a single lane, which can cause backups of several miles during peak commuter hours or holiday weekends. Eastbound motorists intending to head north on Highway 52 must pay close attention to earlier signage, as standard exit ramps may be closed or rerouted to temporary County road connections.

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Safety in Work Zones: 511 Minnesota Resources

MnDOT warns that work zones like the Highway 52 interchange present hazards such as narrow lanes and sudden merges.

• Real-Time Data: Travelers are encouraged to check 511mn.org or the 511 Minnesota smartphone app for live updates on lane closures.
• Safe Driving: Obey all posted speed limits within the work zone; fines are significantly higher in active construction areas.
• Commercial Traffic: Heavy freight operators should verify weight and width restrictions, as detours through County roads may have different limits than the main interstate.

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FAQ: Minnesota Highway 52 Construction 2026

How long will the Highway 52 and I-90 construction last? 2026 is the final year of the multi-year project. While substantial completion of the interchange is expected by late 2026, minor finishing work may continue into the following spring.

Is there a way to avoid the construction zone entirely? For long-distance travelers between Iowa and the Twin Cities, using Interstate 35 further west may be a viable alternative to avoid the Highway 52 work zone, though it adds mileage depending on your destination.

What is the fastest way to get to the Mayo Clinic in Rochester from the south? Travelers from the south should follow the Highway 63 detour through Stewartville, which provides a direct link into the southern part of Rochester, bypassing the Highway 52/I-90 interchange delays.

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Disclaimer: Road conditions and detour routes are managed by the Minnesota Department of Transportation (MnDOT). Travelers should consult 511 Minnesota for real-time updates and emergency road alerts.