How to Ship Oversize & Overweight Loads in Colorado
Colorado figures verified against Colorado Department of Transportation (codot.gov) · 2026-09· Last reviewed September 2026
Moving something big through Colorado is a solved problem: the state publishes the envelope, sells the permission to exceed it, and expects the load marked, escorted, and timed by its rules.
Colorado oversize thresholds
- Width
- over 8.5 ft needs a permit
- Height
- Most states run 13 ft 6 in to 14 ft; the exact ceiling is state-set.
- Gross weight
- over 80,000 lb needs a permit
- Length
- over 57.3 ft needs a permit
- Axles (interstate standard)
- 20,000 lb single · 34,000 lb tandem
Does your load need a permit here?
Skip the reading: enter your real dimensions and weight in the quote engine and it applies the thresholds of every jurisdiction on your actual route, prices permits and escorts where your load crosses the bands, and locks the price for 30 days.
Quote my load for Colorado →Heavy equipment, vehicles, freight, containers: all categories priced.
From routine permit to superload in Colorado
Not every permitted load is the same size of problem. Colorado tiers them:
Routine permitted
The everyday oversize move: permit, marking, escorts by band.
Route-surveyed
Colorado permits through its online COOPR system, and many permits SELF-ISSUE instantly when dimensions and routes fall inside the automated bands; anything bigger routes to a technician.
Superload
Colorado's superloads (its Chapter 6 Specials) take 3 to 5 business days of review, with mountain-corridor clearances and structures examined route by route.
Permits in Colorado: who issues them
Oversize and overweight permits are issued by the CDOT Permit Office (Denver), through COOPR (Colorado Online Oversize/Overweight Permitting and Routing); the permit office answers at 1-800-350-3765. Your carrier or its permit service deals with the office directly, and the cost is in your quote when your dimensions require it.
- •The Eisenhower-Johnson tunnels and mountain corridors impose their own height and hazmat rules on top of the permit; routing around them is a normal part of big Colorado moves.
The escalation ladder: from legal load to the move nobody makes
As dimensions grow, requirements stack in the same order everywhere; Colorado sets the exact trigger points.
1 · Legal load
Inside the envelope above: no permit, no escorts, travels any lawful hour. Typical: a 20 ft container on a flatbed, a pickup on a hotshot, pallets in a van.
2 · Permitted, no escort
Over the envelope but inside the state's first escort band: permit, banner and flags, daylight-type windows. Typical: a 10 ft wide skid-steer-and-attachments load on a step deck.
3 · One escort
From the state's first width band (commonly in the 12 ft range): a certified pilot car leads on two-lane roads or follows on divided highways. Typical: a 12 ft wide dozer on an RGN.
4 · Two escorts / pole car
Wider still, and on two-lane routes: escorts front AND rear. Very tall loads add a height-pole car that proves every wire and bridge before the load reaches it. Typical: a 14 ft wide, 15 ft tall excavator on a lowboy.
5 · Police escort / superload
Colorado's superloads (its Chapter 6 Specials) take 3 to 5 business days of review, with mountain-corridor clearances and structures examined route by route. At this scale expect route surveys, possible rolling closures, and utility crews lifting lines ahead of the convoy.
6 · Cannot move as one piece
Past what roads, bridges, and wires physically accept, or whenever the load is DIVISIBLE: authorities expect it reduced, not permitted. Booms come off, counterweights ship separately, buildings split into sections; the truly non-reducible goes to engineered transport, rail, or barge for part of the journey.
Pilot escorts display the applicable WIDE, LONG, or OVERSIZE LOAD signage; mountain passes and tunnel clearances shape escort and routing conditions more than in flatland states.
Examples are typical industry scenarios for scale, not Colorado determinations; the permit for your move states the binding requirements.
Permits, escorts, and travel windows in practice
The mechanics in Colorado follow the continental pattern: a single-trip permit describing the load and its route, escort vehicles from the state's width and length bands upward, marked banners and flags on the load, and travel windows that favour daylight and quiet roads. The details are Colorado's own, and they are applied to your move at dispatch. For how each piece works everywhere, see the guides on pilot cars & escorts, permits, travel windows.
Permits in Colorado are issued by the CDOT Permit Office (Denver); your carrier or its permit service deals with the office directly.
Common questions
When does a load count as oversize in Colorado?▾
In Colorado, a load is oversize once it exceeds 8.5 ft in width, or the state's length limits; beyond those figures a permit is required before it moves.
Do I need to get the Colorado permit myself?▾
No. Movement permits attach to the carrier and vehicle, not to the shipper. When your dimensions require a Colorado permit, the carrier or its permit service obtains it, the cost is priced into your quote, and the paperwork rides in the cab.
Will my load need a pilot car in Colorado?▾
Escorts are triggered by width, length, and height bands that Colorado sets itself, and the count changes with road type. Your quote prices escort bands from your declared dimensions, and the permit for the move states the binding requirement.
Can oversize loads travel at night or on holidays in Colorado?▾
Daylight travel is the working default for oversize loads across North America, with curfews in major urban areas and restrictions on statutory holidays. Colorado's current windows are applied to your route during dispatch planning, and your pickup and delivery estimates already reflect them.
Related: heavy equipment shipping · all jurisdictions · other states: Alabama · Alaska · Arizona · Arkansas · California · Connecticut
This guide is provided free, for general information, so shippers can see how oversize and overweight moves work. It is not legal advice and not a permit determination. Limits, escort bands, fees, and seasonal restrictions change regularly; before relying on any figure, verify it with the jurisdiction's transportation department or permit office, or a licensed permit service. When you book with LoadLoom, our dispatch desk and your assigned carrier confirm the current rules for your exact load and route; that confirmation, not this page, governs your shipment. LoadLoom is operated by ShipVista Corporation, licensed FMCSA freight forwarder FF-53801, USDOT 3852466. Last reviewed September 2026. Spot an error? Email customercare@loadloom.com with the official source and our desk will verify and update.