How Oversize Load Permits Work — A Shipper's Guide
Oversize permits are state-issued authorizations required whenever a load exceeds legal weight or dimension limits. Each state has its own limits, fees, and processing requirements — which is why most shippers use a freight broker to manage the process.
What Triggers an Oversize Permit?
A load requires oversize or overweight permits when it exceeds any of the following standard federal limits:
- ■ Weight: Over 80,000 lbs gross vehicle weight (GVW)
- ■ Width: Over 8.5 feet
- ■ Height: Over 13.5–14 feet (varies by state)
- ■ Length: Over 53–65 feet (varies by state)
Any single dimension exceeding its limit triggers a permit requirement — not all of them. A load that is legal in weight but too wide still needs an oversize permit.
Types of Oversize Permits
There are several categories of permits depending on load characteristics:
- Single-Trip Permit: Authorizes one specific move from origin to destination. Most common for one-time equipment moves.
- Annual Permit: Allows repeated oversize moves within a state for a set period. Cost-effective for carriers making frequent moves.
- Superload Permit: Required for extreme loads that exceed standard oversize permit limits — typically over 150,000 lbs or very wide loads. Requires detailed route surveys and advance state review.
- Blanket Permit: Covers multiple non-specific moves within defined parameters. Common for carriers moving similar equipment regularly.
How Long Does a Permit Take?
| Permit Type | Typical Timeline |
|---|---|
| Standard single-state oversize | 1–3 business days |
| Multi-state route | 3–7 business days |
| Superload (extreme dimensions) | 5–15 business days |
| California (complex requirements) | 3–10 business days |
What Does a Route Survey Involve?
Superloads and very wide loads require a professional route survey before permits are issued. The survey identifies bridge weight limits, overhead clearances, road restrictions, and necessary detours along the proposed route. The results are submitted to the state DOT as part of the permit application. HTS Logistics conducts route surveys in-house as part of our brokerage service.
When Are Pilot Cars Required?
Pilot car (escort vehicle) requirements vary by state and load dimensions:
- ■ Over 12 ft wide: Rear escort typically required
- ■ Over 14 ft wide: Front and rear escorts required in most states
- ■ Extreme width/height: State police or highway patrol escorts may be required
What Does a Freight Broker Handle?
When you book a heavy haul move through HTS Logistics, we handle the entire permit process:
- ■ Determining permit requirements based on load dimensions
- ■ Filing applications with each state DOT along the route
- ■ Paying permit fees and tracking application status
- ■ Coordinating pilot car services when required
- ■ Conducting or arranging route surveys for superloads
- ■ Building permit timelines into your move schedule
Ready to move your oversized load?
HTS Logistics brokers heavy haul loads nationwide and handles all permitting in-house. Submit a quote request and we'll handle the rest.
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