Trucking in Minnesota
Minnesota’s defining trucking challenge is the spring thaw. From March through May, frost laws restrict axle weights on roads across the state as frozen ground releases its grip and gravel beneath the pavement becomes saturated. Road capacity drops dramatically, and restrictions roll from south to north as the thaw progresses. The limits — 5-ton, 7-ton, and 8-ton per axle depending on the road — can shut down county routes entirely for heavy loads. Interstates and major US highways generally stay open, but the last-mile problem is real: your shipper or receiver may sit on a restricted road.
Minnesota moves a diverse freight mix. Agricultural products dominate outbound loads — grain, soybeans, sugar beets, and processed foods flow south and east from the western and southern regions of the state. The Twin Cities metro is a major distribution hub, with warehousing and fulfillment centers clustered along I-494/I-694. Manufacturing freight from medical device companies, food processors, and industrial equipment makers generates consistent year-round loads. The Port of Duluth-Superior at the western tip of Lake Superior handles iron ore, coal, and grain moving through the Great Lakes system, creating seasonal drayage demand from April through November when the shipping lanes are open. When the port is active, Duluth-area freight volumes spike and truck traffic on I-35 north of the Twin Cities increases noticeably.
Minnesota is a no-fault insurance state, which changes how claims are handled compared to tort states. State minimums sit at $30,000/$60,000/$10,000, with higher bodily injury limits than many plains states but notably low property damage coverage at $10,000. The no-fault structure means PIP-style benefits may apply to injuries, adding complexity that makes proper coverage essential. Interstate carriers carry $750,000 federal minimum, but we recommend $1,000,000 CSL given the combination of severe winter conditions, rural crash severity, and no-fault claims handling.
The corridor network runs through three interstates. I-94 crosses from Moorhead at the North Dakota border through St. Cloud and the Twin Cities to Wisconsin, with the western half exposed to open prairie whiteouts. I-90 traces the southern border from the South Dakota line through Worthington and Albert Lea. I-35 runs north-south from Iowa through the Twin Cities, splitting into I-35W and I-35E through the metro, then continuing to Duluth where steep grades and Lake Superior weather create their own challenges. There are no toll roads, no weight-distance taxes, and no mandatory chain law — but winters routinely reach -30F, and the spring thaw hotline at 1-800-723-6543 becomes the most important number in your phone from March to May.
The Twin Cities metro presents its own challenges. I-494 and I-694 form the beltway, and congestion during rush hours is heavy — particularly on I-35W southbound into downtown Minneapolis and on I-94 between the two downtowns. The I-35W/I-94 commons area is one of the most congested freight bottlenecks in the Upper Midwest. Truck parking inside the metro is limited and expensive. Most drivers stage at truck stops along I-35 south near Faribault or Owatonna, or along I-94 near Rogers and Albertville west of the metro. Planning deliveries for off-peak hours saves significant time in the Twin Cities.
Winter operations demand respect in Minnesota. The open prairie west of the Twin Cities along I-94 toward Moorhead is notorious for ground blizzards where wind-driven snow creates whiteout conditions even when it is not actively snowing. Temperatures below minus 20 Fahrenheit are routine from December through February, and diesel gelling is a real operational risk without proper winter-blend fuel and anti-gel additives. MnDOT maintains an extensive network of road weather information stations and posts conditions online, but conditions change fast on the prairie. Engine block heaters are not optional equipment in Minnesota — they are essential for reliable cold starts. The I-35 corridor from Duluth south through the Iron Range sees heavy lake-effect snow from Lake Superior, particularly in November and December before the lake freezes.
Fuel availability is good along the major interstates and in the Twin Cities metro, with competitive pricing at truck stops clustered around interstate junctions. Western Minnesota along I-94 and I-90 has fewer options, so topping off before crossing the prairie is smart practice. Studded tires are banned year-round in Minnesota due to road surface damage, which is unusual — most northern states allow them seasonally. Chains are permitted when conditions warrant but are rarely used. Minnesota requires intrastate for-hire carriers to obtain a Motor Carrier of Property Certificate through MnDOT, renewed annually, with proper insurance filings in place before operating.
The I-35 corridor between the Twin Cities and Duluth deserves specific mention. The climb out of the metro toward Duluth involves increasingly hilly terrain, and the final descent into the port city includes steep grades and tight curves. Lake Superior generates its own weather patterns — fog, sudden temperature drops, and lake-effect snow can hit the Duluth area while the Twin Cities are clear. In winter, the stretch between Hinckley and Duluth is one of the more hazardous in the state. The Iron Range communities north of Duluth — Virginia, Hibbing, Eveleth — generate mining-related freight that adds heavy truck traffic on US-53 and state highways that were not designed for the volume they carry.
Minnesota’s road network is generally well-maintained, and MnDOT invests heavily in winter operations. Plow response times on interstates are reliable, but county roads and state highways in rural areas can go hours between passes during heavy storms. The state has no toll roads and no weight-distance tax, keeping operating costs predictable. Weigh stations are positioned on the major interstates, and PrePass and Drivewyze bypass programs are active. For carriers based in Minnesota or running regular routes through the state, the combination of no tolls, straightforward regulations, and strong freight demand makes it an attractive operating environment — as long as you respect the winter and the spring thaw.
Starting a Trucking Company in Minnesota?
If you’re launching a new carrier in Minnesota, our free guide walks you through every step from business formation to passing your first FMCSA safety audit. Start with the decision guide or jump to insurance costs for new authorities.
Major Trucking Corridors in Minnesota
Minnesota Trucking Insurance Requirements
State Minimums (Intrastate)
| Bodily Injury (per person) | $30,000 |
| Bodily Injury (per accident) | $60,000 |
| Property Damage | $10,000 |
Federal Minimum (Interstate)
$750,000
Required for interstate for-hire carriers
RMS Recommendation: We recommend $1,000,000 CSL for most carriers. Most brokers and shippers require $1M, and it protects your personal assets.
Coverage Types for Minnesota Truckers
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Minnesota Trucking Insurance FAQ
What are Minnesota's frost laws and when do they take effect?
Frost laws restrict axle weights on state trunk highways and county roads during spring thaw, typically March through mid-May. Restrictions roll from south to north as the thaw progresses, with 5-ton, 7-ton, and 8-ton axle limits on affected roads. Check the MnDOT load limits website or call 1-800-723-6543 for current status.
Are interstates affected by spring thaw weight restrictions?
Generally no. Interstates and major US highways are typically not restricted. The restrictions primarily affect state trunk highways, county roads, and some city streets. Plan routing to stay on interstates and US highways during thaw season.
Does Minnesota have a chain law?
No. Minnesota has no mandatory chain law. Chains are permitted when conditions warrant, but studded tires are not allowed. Despite no chain requirement, winter conditions can be severe with temperatures reaching -30F and whiteout conditions on open prairie stretches.
How do I check if spring weight restrictions are active on my route?
Check the MnDOT load limits website at dot.state.mn.us/loadlimits/, view the interactive restriction maps, or call the recording at 651-366-5400 or toll-free at 1-800-723-6543. Check daily during thaw season -- restrictions change as conditions evolve.
What is the Motor Carrier of Property Certificate?
Required for intrastate for-hire carriers in Minnesota. It has 12-month validity and requires annual renewal. Apply through MnDOT with the required insurance filing.
Why are studded tires banned in Minnesota?
Minnesota prohibits studded tires due to the road surface damage they cause. This applies year-round with no seasonal exception. Chains are allowed when conditions require them, but studs are never permitted on Minnesota roads.