Colorado Oversize / Overweight Regulations

Overview

Colorado Oversize Overweight Permits

Office	Colorado Department of Transportation
Address	4201 E. Arkansas Ave. Suite 290, Denver, Colorado 80222
Contact	(303) 757-9539 / (800) 350-3765
Hours	7:30 A.M. – 4:30 P.M. (MT). Closed Thursdays 10:00 A.M. – 10:30 A.M. for state business.

Permit validity	Single-trip permits are valid for up to five (5) days. (Permit writer’s discretion)
Operating time	7:30 A.M. – 4:30 P.M. (MT). Closed Thursdays 10:00 A.M. – 10:30 A.M. for state business.

Length	110′ on mountainous 2-lane highways. 120′ on all non-mountainous 2-lane highways. 130′ on all 4-lane highways.
Width	17′
Height	16′

Private escorts must have Colorado safety certificate.
On 2-Lane Highways — Width over 13′ to 15′: 1 Front (+possible 1 Rear)*
On 2-Lane Highways — Width over 15′ to 17′: 2 (Front & Rear)
On 2-Lane Highways — Width over 8′6″ on certain secondary roads: 1 Front
On 2-Lane Highways — Width over 11′ on certain secondary 2-lane roads: 2 (Front & Rear)
On 2-Lane Highways — Length over 85′ on certain portions of 2-lane and 4-lane highways: 1 Front
On 2-Lane Highways — Length over 110′: 1 Front
On 2-Lane Highways — Overhang more than 25′ (at point of overhang): 1
On 2-Lane Highways — Height over 16′: 1 Front w/ High Pole
On 4 or More Lane Highways — Width over 13′ to 15′: 1 Rear*
On 4 or More Lane Highways — Width over 15′: 2 (Front & Rear)*
On 4 or More Lane Highways — Length over 115′: 1 Rear
On 4 or More Lane Highways — Length over 85′ on certain portions of 2-lane and 4-lane highways: 1 Rear
On 4 or More Lane Highways — Overhang more than 25′ (at point of overhang): 1
On 4 or More Lane Highways — Height over 16′: 1 Front w/ High Pole

* Or use yellow flashing light on load in lieu of rear escort.
* Escort requirements vary according to routes traveled within the state and each major city. Write to the state of Colorado.
Gross Weight — 5 Axles: 106,000 – 132,000 (Single, tandem, tridum)
Gross Weight — 6 Axles: 119,000 – 147,000 (Single, tandem, tridum)
Gross Weight — 7 Axles: 132,000 – 162,000 (Single, tridum, tridum)
Gross Weight — 8 Axles: 137,000 – 169,000 (Single, tridum, quad)