By Vinod Ram 
A powerful Midwest winter storm shut down major highways across Iowa on March 15, leaving travelers stranded and forcing transportation officials to close long stretches of Interstate 35.
The Iowa Department of Transportation announced that I-35 is closed in both directions from U.S. Highway 30 in Ames to the Minnesota state line due to whiteout conditions and dangerous drifting snow.
For drivers planning trips across the Midwest, the situation is evolving quickly. This guide explains the current closures, when travel might resume, and how to safely monitor conditions.
Where I-35 Is Currently Closed
According to the Iowa Department of Transportation and the Iowa State Patrol, the following section remains closed:
- I-35 northbound and southbound
- From Exit 111 (U.S. Highway 30 in Ames)
- To the Minnesota border
The closure began Sunday afternoon as wind gusts and heavy snow created near-zero visibility across northern Iowa.
Officials say barriers and ramp closures have been installed along the corridor to prevent vehicles from entering the interstate.
Travel Advisory Across Northern Iowa
Transportation officials have issued a “Travel Not Advised” alert for many roads north of Highway 30.
The blizzard combines several dangerous conditions:
- Heavy snowfall
- Wind gusts over 40–50 mph
- Blowing and drifting snow
- Ice from earlier rainfall freezing on pavement
Authorities warn that even secondary roads may be impassable during peak storm conditions.
How to Check Real-Time Road Conditions
The best way to track reopening updates is through Iowa’s official traffic system.
Travelers can check live conditions through:
The Iowa 511 map provides real-time updates on:
- Road closures
- Snow-covered highways
- Traffic incidents
- Plow activity
Officials recommend checking the map frequently before attempting any travel.
When Could I-35 Reopen?
There is currently no confirmed reopening time for the closed stretch of I-35.
Highways typically reopen only after several conditions are met:
- Blizzard winds decrease
- Snowplows can safely return to highways
- Drifting snow is cleared from travel lanes
- Emergency crews remove stranded vehicles
Transportation officials emphasize that safety crews must restore visibility and traction before traffic is allowed back onto the interstate.
Overnight Closures at the I-35 / I-80 Mixmaster
Drivers in central Iowa should also be aware of ongoing construction impacts in Des Moines.
The major I-35 / I-80 interchange (often called the “Mixmaster”) will have scheduled overnight closures through March 20 as part of a long-term infrastructure project.
Construction closures typically occur:
- During overnight hours
- On specific ramps or directional lanes
- With signed detour routes provided
Drivers should expect delays and allow additional travel time when passing through the Des Moines metro area.
Traveler Survival Guide for Midwest Blizzard Driving
If you must travel during winter storms, emergency officials recommend preparing your vehicle before leaving.
- Carry blankets, water, and emergency supplies
- Keep at least half a tank of fuel
- Charge mobile devices before departure
- Share your travel route with family or friends
Most importantly, authorities say the safest choice during severe winter weather is often to delay travel until conditions improve.
The March 15 blizzard has created one of the most disruptive travel events of the season across Iowa.
With I-35 closed from Ames to the Minnesota border and dangerous conditions continuing in northern counties, drivers should monitor Iowa 511 updates closely before heading out.
As cleanup crews work to reopen highways, travelers across the Midwest are being urged to stay patient and stay safe.
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