TL;DR: Colorado mirrors the federal tiers for intrastate carriers: $750,000 combined single limit for property carriage over 10,000 pounds, $1,000,000 and $5,000,000 hazmat amounts, with towing carrying enhanced first-dollar requirements. One $1,000,000 policy clears the state filing, federal filing, and broker contracts together.
What liability limits does Colorado require for trucks?
Colorado chose alignment: the state adopts the federal Part 387 financial responsibility levels for its intrastate carriers, enforced through PUC filings.
| Layer | Operation | Minimum |
|---|---|---|
| PUC, intrastate (adopting Part 387) | Property carriage, over 10,000 lbs | $750,000 CSL |
| Hazmat by commodity | $1,000,000 / $5,000,000 | |
| PUC towing | Towing carriers | $750,000 first-dollar, plus on-hook and garagekeepers where applicable |
| PUC cargo reference | Regulated property carriage | $10,000 per vehicle |
| Federal, interstate | General freight, 10,001 lbs and up | $750,000 |
| Hazmat | $1,000,000 / $5,000,000 | |
| Registration, light vehicles | Passenger rules | 25/50/15, med-pay offer |
Why does the alignment matter?
It removes the two-tier trap. In low-floor states, intrastate carriers legally run at limits that must be restructured before the first interstate load; in Colorado the state and federal floors match, so growth changes filings rather than coverage. One policy at the $1,000,000 broker standard satisfies the PUC filing, the federal filing, and every contract simultaneously, which is how working Colorado carriers actually buy.
What does towing's first-dollar requirement mean?
That the $750,000 liability must respond from the first dollar on third-party claims, without a deductible eroding the protection, a consumer-protection feature of Colorado's towing regime, paired with on-hook cargo for the towed vehicle and garagekeepers where vehicles are stored. Towing operators price this stack as the cost of the category, and the PUC's enforcement of it is active. It is one of the country's more complete state towing insurance regimes.
How should mountain severity shape actual limits?
Upward, for anyone running the corridors. I-70's grades and the state's mountain passes produce the runaway-truck and multi-vehicle events that exhaust primary limits, chain-law season concentrates risk, and hazmat tunnel restrictions push dangerous cargo over Loveland Pass. Fleets with corridor exposure and assets increasingly carry excess above the $1,000,000 primary, priced for that severity and for Denver's rising verdict trend. Hail argues the same direction on physical damage: deductibles and values set with a bad storm in mind, not an average year.
What about light vehicles and hotshots?
The Part 387 adoption reaches property carriage over 10,000 pounds, mirroring the federal line rather than a higher state threshold, so Colorado's system catches hotshot and box-truck operations earlier than states like Texas or Arizona. Combination weights push many gooseneck setups over the line, and brokered freight requires $1,000,000 certificates regardless. The registration minimums of 25/50/15 with the med-pay offer govern only what falls below the commercial thresholds.
Where are current numbers verified?
The Colorado State Patrol's new-carrier pages for the Part 387 adoption, the PUC for filing and category rules, 49 CFR 387.9 for the federal amounts, and the Division of Insurance, 303-894-7499, for policy questions. The alignment has been stable for years, and the market layer, as everywhere, is the one that moves: broker packets and shipper contracts already require more than the aligned floors, and they change on commercial schedules no regulator publishes. Check the contract before the statute when a required limit is in question.
Real questions Colorado owner-operators and fleet managers ask
What is the minimum insurance for a semi in Colorado?
$750,000 combined single limit, Colorado's adoption of the federal level, filed with the PUC for intrastate work and FMCSA for interstate. Working carriers buy $1,000,000 because broker contracts require it, clearing every layer at once.
Does Colorado require more than federal law anywhere?
For towing, effectively yes: the $750,000 must pay first-dollar on third-party claims, with on-hook and garagekeepers coverage added by category. For general freight the state deliberately mirrors the federal amounts.
Do hotshot trucks need commercial limits in Colorado?
Above 10,000 pounds, the adopted federal levels apply intrastate as well as interstate, catching combination setups earlier than high-threshold states. Brokered freight requires $1,000,000 regardless of where the weight lines fall.
Why do Colorado fleets buy excess coverage?
Corridor severity: I-70 grade events and multi-vehicle mountain crashes produce claims that exhaust primaries, and Denver-metro verdicts have trended up. Fleets with assets size excess to that exposure rather than to the aligned floors.
What limits does hazmat need through the mountains?
The federal tiers by commodity, $1,000,000 or $5,000,000, with routing law adding its own constraint: hazmat is restricted through the Eisenhower Tunnel, and Loveland Pass routing is part of the risk underwriters price.
Can Morrow write trucking insurance in Colorado?
Not directly today. Morrow is the brand name of Afthonea Inc, licensed in Massachusetts, Florida, California, New York, Pennsylvania, Oregon, and Texas. If your trucking company is based in Colorado, we can refer you to a licensed Colorado agent, and this guide still shows you exactly what to ask that agent for. Everything above comes from public Colorado and federal sources, not from us selling you a policy.
Related Colorado trucking guides
The other Colorado trucking questions, answered the same way.
- Trucking insurance in Colorado (start here)
- Trucking insurance requirements
- Intrastate authority and filings
- Cost of trucking insurance
- Business insurance in Colorado
- Federal minimum liability limits by commodity
- What is an MCS-90 endorsement?
- Federal minimum liability limits by commodity
- Commercial auto for trucking fleets
This guide is general information, not legal, tax, or insurance advice. Limits, forms, and deadlines change, so verify current requirements with the Colorado PUC and the Colorado Division of Insurance before you rely on them. Morrow is a brand name of Afthonea Inc. Last updated: July 2026.