Overwidth PermitFrom all four dimensions of Length, Width, Weight, and Height, Width is the straightforward one. However, it has complexities too. The maximum legal width of any load through any state is 8’6″. Any load which is over 8’6″ wide is overwidth or over-dimensional. When a load exceeds 8’6″ you will need Overwidth Permits to move an overwidth load from state to state.
State Requirements for Overwidth LoadsStates differ widely in their rules and regulations of hauling overwidth loads. Here are examples of overwidth regulations that are out there. These regulations affect how a truck travels through a given state based on specific standards:
|◊ Bridges on the route|
|◊ The width of the lane- actual width of the road lane|
|◊ Two-Lane roads versus Four Lane or Interstate roads|
|◊ Non-designated roads – over 8’ is considered oversize on some routes|
|◊ Spring melt restrictions|
|◊ Commodity (for instance Bulldozer blades)|
EscortsEscort/Pilot requirements vary by state. Each state will further breakdown escorts depending on trucker’s overwidth shipment. For instance:
- The overwidth dimension can be a determining factor when an escort is required.
- The route can determine if escorts are required or not
- In addition to civilian escorts, police escorts may be required
Requirements for Overwidth LoadsAll Overwidth shipments must be marked with either warning flags and “OVERSIZE” signs, and an amber rotating and flashing beacon. Intermediate protrusions in the width should be also flagged. In addition, the maximum operating speeds for Overwidth vehicles moving under the permit are determined by the following:
- legal width more than and including 10’6” – posted speed, except mobile homes are restricted to 45 mph,
- 10’6” width more than and including 12 feet – 45 mph maximum or posted depending on route, except mobile homes are restricted to 40 mph,
- 12 feet width more than and including 14 feet – 40 or 45 mph depending on route, except mobile homes are restricted to 35 mph,
- 14 feet width more than and including 16 feet – 35 or 40 mph depending on route, except mobile homes are restricted to 35 mph,
- Over 16 feet wide – 35 mph maximum.