...
Dimension | National Network | State and Other Supplemental Highways |
Width: | 8' 6" | 8' 6" can be route restricted to 8' |
Height: | 14' 6" | 14' 6" |
Length: | National Network | On All Others |
Bus | 45' | 45' |
Articulated bus | 65' operated by a transit authority | 65' operated by a transit authority |
Straight Trucks | 40' | 40' |
Straight truck and trailer | 65' 75' with implement of husbandry on the trailer | 65' 75' with implement of husbandry on the trailer |
Tractor-semitrailer combinations | No limit | No limit |
Semitrailer | 53' | 53' |
Tractor-twin-trailer combination | No limit | No limit |
Trailers of twin-trailer combinations | 65' measured from front of 1st trailing unit to rear of 2nd | 65' measured from front of 1st trailing unit to rear of 2nd |
Boat-transporter combination | ||
Overhang limitations | ||
Stinger-steered boat-transporter | ||
Overhang limitations | ||
Auto-transporter | ||
Overhang limitations | ||
Stinger-steered auto-transporter | 80' | 80' |
Overhang limitations | 4' front, 6' rear | 4' front, 6' rear |
Saddlemount | 75' | 75' |
General overhang limitations | ||
Drawbar | ||
Dromedary | ||
Kingpin to rearaxle | ||
Length special limitations or restrictions | ||
Weight: | Interstate and Defense Highways | On All Others |
Steer axle | 20,000 or the tire rating, whichever is less | 20,000 or the tire rating, whichever is less |
Single axle | 20,000 | 20,000 |
Tandem axle | 34,000 | 34,000 |
Tridem axle | ||
Gross vehicle weight | 80,000 | 95,000 following bridge formula and axles |
Load per inch width of tire | ||
Per wheel | 10,000 | 10,000 |
Tolerances | ||
APU allowance | 550 | 550 |
Natural gas allowance | 2,000 Includes battery powered | |
Weight special limitations or restrictions |
Bridge rules
Distance in feet between the extremes of any group of 2 or more consecutive axles | ||||||
---|---|---|---|---|---|---|
2 axles | 3 axles | 4 axles | 5 axles | 6 axles | 7 axles | |
4 | 34,000 | |||||
5 | 34,000 | |||||
6 | 34,000 | |||||
7 | 34,000 | |||||
8 | 34,000 | 42,000 | ||||
9 | 39,000 | 42,500 | ||||
10 | 40,000 | 43,500 | ||||
11 | 44,000 | |||||
12 | 45,000 | 50,000 | ||||
13 | 45,500 | 50,500 | ||||
14 | 46,500 | 51,500 | ||||
15 | 47,000 | 52,000 | ||||
16 | 48,000 | 52,500 | 58,000 | |||
17 | 48,500 | 53,500 | 58,500 | |||
18 | 49,500 | 54,000 | 59,000 | |||
19 | 50,000 | 54,500 | 60,000 | |||
20 | 51,000 | 55,500 | 60,500 | |||
21 | 51,500 | 56,000 | 61,000 | |||
22 | 52,500 | 56,500 | 61.500 | |||
23 | 53,000 | 57,500 | 62,500 | |||
24 | 54,000 | 58,000 | 63,000 | |||
25 | 54,500 | 58,500 | 63,500 | 69,000 | ||
26 | 55,500 | 59,500 | 64,000 | 69,500 | ||
27 | 56,000 | 60,000 | 65,000 | 70,000 | ||
28 | 57,000 | 60,500 | 65,500 | 71,000 | ||
29 | 57,500 | 61,500 | 66,000 | 71,500 | ||
30 | 58,500 | 62,000 | 66,500 | 72,000 | ||
31 | 59,000 | 62,500 | 67,500 | 72,500 | ||
32 | 60,000 | 63,500 | 68,000 | 73,000 | ||
33 | 64,000 | 68,500 | 74,000 | |||
34 | 64,500 | 69,000 | 74,500 | |||
35 | 65,500 | 70,000 | 75,000 | |||
36 | 66,000 | 70,500 | 75,500 | |||
37 | 66,500 | 71,000 | 76,000 | 81,500 | ||
38 | 67,500 | 72,000 | 77,000 | 82,000 | ||
39 | 68,000 | 72,500 | 77,500 | 82,500 | ||
40 | 68,500 | 73,000 | 78,000 | 83,500 | ||
41 | 69,500 | 73,500 | 78,500 | 84,000 | ||
42 | 70,000 | 74,000 | 79,000 | 84,500 | ||
43 | 70,500 | 75,000 | 80,000 | 85,000 | ||
44 | 71,500 | 75,500 | 80,500 | 85,500 | ||
45 | 72,000 | 76,000 | 81,000 | 86,000 | ||
46 | 72,500 | 76,500 | 81,500 | 87,000 | ||
47 | 73,500 | 77,500 | 82,000 | 87,500 | ||
48 | 74,000 | 78,000 | 83,000 | 88,000 | ||
49 | 74,500 | 78,500 | 83,500 | 88,500 | ||
50 | 75,500 | 79,000 | 84,000 | 89,000 | ||
51 | 76,000 | 80,000 | 84,500 | 89,500 | ||
52 | 76,500 | 80,500 | 85,000 | 90,500 | ||
53 | 77,500 | 81,000 | 86,000 | 91,000 | ||
54 | 78,000 | 81,500 | 86,500 | 91,500 | ||
55 | 78,500 | 82,500 | 87,000 | 92,000 | ||
56 | 79,500 | 83,000 | 87,500 | 92,500 | ||
57 | 80,000 | 83,500 | 88,000 | 93,000 | ||
58 | 84,000 | 89,000 | 94,000 | |||
59 | 85,000 | 89,500 | 94,500 | |||
60 | 85,500 | 90,000 | 95,000 |
Distance in feet between the extremes of any group of 2 or more consecutive axles | ||||||
---|---|---|---|---|---|---|
2 axles | 3 axles | 4 axles | 5 axles | 6 axles | 7 axles | |
4 | 34,000 | |||||
5 | 34,000 | |||||
6 | 34,000 | |||||
7 | 34,000 | |||||
8 | 34,000 | 42,000 | ||||
9 | 39,000 | 42,500 | ||||
10 | 40,000 | 43,500 | ||||
11 | 44,000 | |||||
12 | 45,000 | 50,000 | ||||
13 | 45,500 | 50,500 | ||||
14 | 46,500 | 51,500 | ||||
15 | 47,000 | 52,000 | ||||
16 | 48,000 | 52,500 | 58,000 | |||
17 | 48,500 | 53,500 | 58,500 | |||
18 | 49,500 | 54,000 | 59,000 | |||
19 | 50,000 | 54,500 | 60,000 | |||
20 | 51,000 | 55,500 | 60,500 | |||
21 | 51,500 | 56,000 | 61,000 | |||
22 | 52,500 | 56,500 | 61.500 | |||
23 | 53,000 | 57,500 | 62,500 | |||
24 | 54,000 | 58,000 | 63,000 | |||
25 | 54,500 | 58,500 | 63,500 | 69,000 | ||
26 | 55,500 | 59,500 | 64,000 | 69,500 | ||
27 | 56,000 | 60,000 | 65,000 | 70,000 | ||
28 | 57,000 | 60,500 | 65,500 | 71,000 | ||
29 | 57,500 | 61,500 | 66,000 | 71,500 | ||
30 | 58,500 | 62,000 | 66,500 | 72,000 | ||
31 | 59,000 | 62,500 | 67,500 | 72,500 | ||
32 | 60,000 | 63,500 | 68,000 | 73,000 | ||
33 | 64,000 | 68,500 | 74,000 | |||
34 | 64,500 | 69,000 | 74,500 | |||
35 | 65,500 | 70,000 | 75,000 | |||
36 | 66,000 | 70,500 | 75,500 | |||
37 | 66,500 | 71,000 | 76,000 | 81,500 | ||
38 | 67,500 | 72,000 | 77,000 | 82,000 | ||
39 | 68,000 | 72,500 | 77,500 | 82,500 | ||
40 | 68,500 | 73,000 | 78,000 | 83,500 | ||
41 | 69,500 | 73,500 | 78,500 | 84,000 | ||
42 | 70,000 | 74,000 | 79,000 | 84,500 | ||
43 | 70,500 | 75,000 | 80,000 | 85,000 | ||
44 | 71,500 | 75,500 | 80,500 | 85,500 | ||
45 | 72,000 | 76,000 | 81,000 | 86,000 | ||
46 | 72,500 | 76,500 | 81,500 | 87,000 | ||
47 | 73,500 | 77,500 | 82,000 | 87,500 | ||
48 | 74,000 | 78,000 | 83,000 | 88,000 | ||
49 | 74,500 | 78,500 | 83,500 | 88,500 | ||
50 | 75,500 | 79,000 | 84,000 | 89,000 | ||
51 | 76,000 | 80,000 | 84,500 | 89,500 | ||
52 | 76,500 | 80,500 | 85,000 | 90,500 | ||
53 | 77,500 | 81,000 | 86,000 | 91,000 | ||
54 | 78,000 | 81,500 | 86,500 | 91,500 | ||
55 | 78,500 | 82,500 | 87,000 | 92,000 | ||
56 | 79,500 | 83,000 | 87,500 | 92,500 | ||
57 | 80,000 | 83,500 | 88,000 | 93,000 | ||
58 | 84,000 | 89,000 | 94,000 | |||
59 | 85,000 | 89,500 | 94,500 | |||
60 | 85,500 | 90,000 | 95,000 |
*No group of two or more consecutive axles shall carry a load in excess of the value given in the table corresponding to the distance in feet between the extreme axles of the group, measured longitudinally to the nearest foot, except two consecutive sets of tandem axles may carry a gross load of 34,000 pounds each when the overall distance between the first and last axles of such consecutive sets of tandem axles is 36, 37 or 38 feet.
The maximum gross load on any group of two axles, the distance between the extremes of which is more than eight feet but less than eight feet six inches, shall be 38,000 pounds.
Any group of three axles shall be restricted to a maximum load of 34,000 pounds unless the distance between the extremes of the first and third axles is at least 96 inches.
Any two consecutive axles whose centers are more than 40 inches and not more 96 inches apart, measured to the nearest inch between any two adjacent axles in the series, shall be defined as tandem axles, and the gross weight transmitted to the road surface through such series shall not exceed 34,000 pounds. No axle of the series shall exceed the maximum weight permitted under this section for a single axle.
Dummy axles shall be disregarded in determining the lawful weight of a vehicle or vehicle combination for operation on the highway. Dummy axle shall mean an axle attached to a vehicle or vehicle combination in a manner so that it does not articulate or substantially equalize the load and does not carry at least eight percent or 8,000 pounds of the gross weight of the vehicle or vehicle combination.