Permits Canada obtains oversize and overweight permits for Idaho for trucks and loads over the legal width, height, length or weight.
Idaho legal dimensions and weight
A truck and load within these limits needs no oversize or overweight permit in Idaho.
| Width | 8 ft 6 in |
|---|---|
| Height | 14 ft |
| Length | 53 ft trailer on National Network routes (48 ft elsewhere) |
Idaho oversize permit rules
| Permits offered | Single trip, annual |
|---|---|
| Escorts | Set by ITD Pilot/Escort Vehicle Travel map by route and load size; rear escort required when the load blocks the driver's 200 ft rear view |
| Travel times | Red-coded routes: daylight only, no weekends, stop 2 p.m. Friday or day before holiday; black routes and Interstate: up to 12 ft wide, 120 ft long, 15 ft high may run 24/7, larger loads stop 4 p.m. before 6 holidays |
Escort and time-of-travel rules come from a color-coded route map that is part of the permit.
Getting your permit with Permits Canada
- Send us the online oversize / overweight application with your truck, trailer, load dimensions and route.
- A permit agent applies for your Idaho permit and checks the route conditions.
- Your permit arrives by email with its travel conditions. Oversize and overweight permits can take longer, since the authorities review each application.
Our fee is $40 to $50 CAD per permit, plus the Idaho state fee, which depends on the dimensions, weight and route.
Also need temporary registration or fuel tax coverage? See Idaho trip & fuel permits.
Idaho oversize permit questions
When is an oversize permit required in Idaho?
When the truck or load exceeds the Idaho legal limits: width 8 ft 6 in, height 14 ft, length 53 ft trailer on National Network routes (48 ft elsewhere).
When are pilot or escort vehicles required in Idaho?
Set by ITD Pilot/Escort Vehicle Travel map by route and load size; rear escort required when the load blocks the driver's 200 ft rear view.
Can oversize loads travel at night or on weekends in Idaho?
Red-coded routes: daylight only, no weekends, stop 2 p.m. Friday or day before holiday; black routes and Interstate: up to 12 ft wide, 120 ft long, 15 ft high may run 24/7, larger loads stop 4 p.m. before 6 holidays.
How much does an Idaho oversize permit cost?
Permits Canada charges $40 to $50 CAD per permit, plus the Idaho state fee, which depends on the dimensions, weight and route.
Last reviewed October 2026. Rules change; your permit agent confirms them for each move. All provinces and states