Oregon Administrative Rules
Chapter 734 - DEPARTMENT OF TRANSPORTATION, HIGHWAY DIVISION
Division 73 - 102"-WIDE COMMERCIAL VEHICLES - COMBINATIONS NOT SUBJECT TO OVERALL LENGTH RESTRICTIONS
Section 734-073-0080 - Maximum Weight Limit on Interstate Highways
Current through Register Vol. 63, No. 3, March 1, 2024
(1) The following provisions apply to maximum weights allowed on interstate highways without a permit:
W = 500 (N - 1 + 12N + 36)
where L is the distance between two or more axles, N is the number of axles of a group of axles and W is the weight in pounds, except that two consecutive sets of tandem axles may carry a gross load of 34,000 pounds each if the overall distance between the first and last axle is 36 feet or more.
(2) Permits may be issued without regard to section (1) through (5) of this rule for vehicles and loads which cannot be dismantled or divided (non-divisible loads) without incurring substantial costs or delay.
(3) Permits may be issued for vehicles or combinations of vehicles authorized by ORS Chapter 818 and OAR Chapter 734, Division 74.
(4) The provisions of this rule do not apply to single, or tandem axle weights, or gross weights legally authorized under Oregon law on July 1, 1956. The group of axles requirements established in this section shall not apply to vehicles legally grandfathered under Oregon group of axle weight tables or formulas on January 4, 1975.
(5) Permits may be issued for two consecutive tandem axles having a loaded weight of 34,000 pounds each, provided the distance between the first and last axles of the two tandem axles is 30 feet or more.
(6) Permits may be issued for a group of four axles consisting of a set of tandem axles and two axles spaced nine feet or more apart that have a loaded weight of 70,000 pounds provided the distance between the first and last axles of the group is 35 feet or more.
The Tables referenced are available from the agency.
Stat. Auth.: ORS 184.616, ORS 184.619, ORS 810 & ORS 818
Stats. Implemented: ORS 818.200 & ORS 818.220