2023 Oregon Revised Statutes › Volume : 19 - Utilities, Vehicle Code, Watercraft, Aviation › Chapter 818 - Vehicle Limits › Section 818.010 - Maximum allowable weight.

This section establishes maximum weight limitations for purposes of ORS 818.020. Except as provided in subsections (4) and (5) of this section or where an exemption under ORS 818.030 specifically provides otherwise, a loaded weight that exceeds the maximum allowable weight as determined by any of the following tables exceeds the maximum weight limitations for purposes of ORS 818.020:
(1) A vehicle exceeds the maximum allowable weight if the loaded weight of an axle or tandem axle is in excess of that determined by the formula in the following table:
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Table I
The manufacturer’s side wall tire rating (but not to exceed 600 pounds) ´ the sum of the tire widths, in inches, of the wheels of the axle or tandem axles = maximum allowable weight.
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For purposes of the table in this subsection tire width is determined by measuring the cross section of the tread of a wheel, the outer face of a track or the runner of a sled except for the following:
(a) For solid tires made of elastic material, tire width is determined by measuring the cross section between the flanges of the circumference of a wheel at the base of the tire as customarily measured and rated by the manufacturers of motor vehicles and tires.
(b) For pneumatic tires made of elastic material, tire width is the diameter of the cross section of the tire as customarily measured and rated by the manufacturers of motor vehicles and tires.
(2) A vehicle or combination of vehicles exceeds the maximum allowable weight if the loaded weight measured at any of the places designated on the following table exceeds the maximum allowable weight established on the table for measurement at that place:
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Table II
Place for measurement Maximum allowable
of weight weight in pounds
Any individual wheel 10,000
Any axle 20,000
Any tandem axles 34,000
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(3) A vehicle, group of axles or combination of vehicles exceeds the maximum allowable weight if the loaded weight is in excess of maximum allowable weight as determined by the method in the following table that produces the lower allowable maximum weight:
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Table III
(Maximum allowable weight
determined by whichever of the
following methods produces lower weight:)
Method A
The sum of permissible axle, tandem axles or group of axles weights as determined under Table I or II of this section is the maximum allowable weight.
OR
Method B
Distance
in feet
between
first and Maximum allowable weight in pounds
last axle for number of axles in group of axles:
in group
of axles: 2 3 4 5 6 7 or
Axles Axles Axles Axles Axles More
Axles
4 34,000
5 34,000
6 34,000
7 34,000
8 and
less 34,000 34,000
More
than 8 38,000 42,000
9 39,000 42,500
10 40,000 43,500
11 40,000 44,000
12 40,000 45,000 50,000
13 40,000 45,500 50,500
14 40,000 46,500 51,500
15 40,000 47,000 52,000
16 40,000 48,000 52,500 58,000
17 40,000 48,500 53,500 58,500
18 40,000 49,500 54,000 59,000
19 40,000 50,000 54,500 60,000
20 40,000 51,000 55,500 60,500 66,000
21 40,000 51,500 56,000 61,000 66,500
22 40,000 52,500 56,500 61,500 67,000
23 40,000 53,000 57,500 62,500 68,000
24 40,000 54,000 58,000 63,000 68,500 74,000
25 40,000 54,500 58,500 63,500 69,000 74,500
26 40,000 55,500 59,500 64,000 69,500 75,000
27 40,000 56,000 60,000 65,000 70,000 75,500
28 40,000 57,000 60,500 65,500 71,000 76,500
29 40,000 57,500 61,500 66,000 71,500 77,000
30 40,000 58,500 62,000 66,500 72,000 77,500
31 40,000 59,000 62,500 67,500 72,500 78,000
32 40,000 60,000 63,500 68,000 73,000 78,500
33 40,000 60,000 64,000 68,500 74,000 79,000
34 40,000 60,000 64,500 69,000 74,500 80,000
35 40,000 60,000 65,500 70,000 75,000 80,000
36 40,000 60,000 66,000 70,500 75,500 80,000
37 40,000 60,000 66,500 71,000 76,000 80,000
38 40,000 60,000 67,500 71,500 77,000 80,000
39 40,000 60,000 68,000 72,500 77,500 80,000
40 40,000 60,000 68,500 73,000 78,000 80,000
41 40,000 60,000 69,500 73,500 78,500 80,000
42 40,000 60,000 70,000 74,000 79,000 80,000
43 40,000 60,000 70,500 75,000 80,000 80,000
44 40,000 60,000 71,500 75,500 80,000 80,000
45 40,000 60,000 72,000 76,000 80,000 80,000
46 40,000 60,000 72,500 76,500 80,000 80,000
47 40,000 60,000 73,500 77,500 80,000 80,000
48 40,000 60,000 74,000 78,000 80,000 80,000
49 40,000 60,000 74,500 78,500 80,000 80,000
50 40,000 60,000 75,500 79,000 80,000 80,000
51 40,000 60,000 76,000 80,000 80,000 80,000
52 40,000 60,000 76,500 80,000 80,000 80,000
53 40,000 60,000 77,500 80,000 80,000 80,000
54 40,000 60,000 78,000 80,000 80,000 80,000
55 40,000 60,000 78,500 80,000 80,000 80,000
56 40,000 60,000 79,500 80,000 80,000 80,000
57 or
over 40,000 60,000 80,000 80,000 80,000 80,000
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For the purpose of the table in this subsection, the distance between axles shall be measured to the nearest foot. When a fractional measurement is exactly one-half foot the next larger whole number shall be used.
(4) Notwithstanding any other provision of this section, a vehicle with farm vehicle registration issued under ORS 805.300 or with out-of-state farm vehicle registration exceeds the maximum allowable weight if the loaded weight of the vehicle or combination of vehicles exceeds the amount shown in the following table:
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Distance
in feet
between
the
extremes
of any
group of Maximum allowable weight in pounds
2 or more for number of axles in group of axles:
consecutive
axles: 2 3 4 5 or
Axles Axles Axles More
Axles
4 37,800
5 37,800
6 37,800
7 37,800
8 37,800 42,000
9 37,800 42,400
10 37,800 43,500
11 44,000
12 45,000 50,000
13 56,470 56,470 56,470
14 57,940 57,940 57,940
15 59,400 59,400 59,400
16 60,610 60,610 60,610
17 61,820 61,820 61,820
18 63,140 63,140 63,140
19 64,530 64,530 64,530
20 65,450 65,450 65,450
21 66,000 66,000 66,330
22 66,000 66,000 67,250
23 66,000 66,000 67,880
24 66,000 66,000 68,510
25 66,000 66,000 69,150
26 66,000 66,000 69,770
27 66,000 66,000 70,400
28 66,000 66,000 70,950
29 66,000 66,000 71,500
30 72,050
31 72,600
32 73,150
33 73,700
34 74,250
35 74,800
36 75,350
37 75,900
38 76,450
39 77,000
40 77,550
41 78,100
42 78,650
43 and
over 80,000
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Weights authorized under this subsection are authorized only if the vehicle is transporting field-loaded agricultural products in Malheur County. Weights authorized under this subsection are not authorized for vehicles traveling on Interstate 84 or U.S. Highway 95. A vehicle otherwise described in this subsection that is operating at a weight not listed in this subsection must comply with subsection (1) of this section.
(5) Notwithstanding any other provision of this section, the maximum wheel load for the front axle of the power unit on a vehicle used for curbside solid waste or recycling collection that has tires that are at least 12-1/2 inches wide shall be the load limit established by the tire manufacturer, as molded on at least one sidewall of the tire, up to a maximum of 10,000 pounds, as long as the tire is approved by the Department of Transportation pursuant to ORS 818.012. [1983 c.338 §508; 1985 c.16 §264; 1985 c.172 §6a; 1987 c.66 §1; 1995 c.489 §1; 1999 c.725 §1; 2001 c.335 §1; 2001 c.665 §1]