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Axle Grouping Weight Charts

Interstate Axle Grouping Weight Chart

Distance between axles

 

2-Axles

 

3-Axles

 

4-Axles

 

5-Axles

 

6-Axles

 

7-Axles

4

38,000

 

 

 

 

 

 

 

 

 

 

5

38,000

 

 

 

 

 

 

 

 

 

 

6

38,000

 

 

 

 

 

 

 

 

 

 

7

38,000

 

 

 

 

 

 

 

 

 

 

8 or less

38,000

38,000

 

 

 

 

 

 

 

 

More than 8

38,000

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

66,000

 

 

21

 

 

51,500

56,000

61,000

66,500

 

 

22

 

 

52,500

56,500

61,500

67,000

 

 

23

 

 

53,000

57,500

62,500

68,000

 

 

24

 

 

54,000

58,000

63,000

68,500

74,000

25

 

 

54,500

58,500

63,500

69,000

74,500

26

 

 

55,500

59,500

64,000

69,500

75,000

27

 

 

56,000

60,000

65,000

70,000

75,500

28

 

 

57,000

60,500

65,500

71,000

76,500

29

 

 

57,500

61,500

66,000

71,500

77,000

30

 

 

58,500

62,000

66,500

72,000

77,500

31

 

 

59,000

62,500

67,500

72,500

78,000

32

 

 

60,000

63,500

68,000

73,000

78,500

33

 

 

 

 

64,000

68,500

74,000

79,000

34

 

 

 

 

64,500

69,000

74,500

80,000

35

 

 

 

 

65,500

70,000

75,000

 

 

36

 

 

 

 

66,000 **

70,500

75,500

 

 

37

 

 

 

 

66.500 **

71,000

76,000

 

 

38

 

 

 

 

67,500 **

72,000

77,000

 

 

39

 

 

 

 

68,000

72,500

77,500

 

 

40

 

 

 

 

68,500

73,000

78,000

 

 

41

 

 

 

 

69,500

73,500

78,500

 

 

42

 

 

 

 

70,000

74,000

79,000

 

 

43

 

 

 

 

70,500

75,000

80,000

 

 

44

 

 

 

 

71,500

75,500

 

 

 

45

 

 

 

 

72,000

76,000

 

 

 

 

46

 

 

 

 

72,500

76,500

 

 

 

 

47

 

 

 

 

73,500

77,500

 

 

 

 

48

 

 

 

 

74,000

78,000

 

 

 

 

49

 

 

 

 

74,500

78,500

 

 

 

 

50

 

 

 

 

75,500

79,000

 

 

 

 

51

 

 

 

 

76,000

80,000

 

 

 

 

52

 

 

 

 

76,500

 

 

 

 

 

 

53

 

 

 

 

77,500

 

 

 

 

 

 

54

 

 

 

 

78,000

 

 

 

 

 

 

55

 

 

 

 

78,500

 

 

 

 

 

 

56

 

 

 

 

79,500

 

 

 

 

 

 

57

 

 

 

 

80,000

 

 

 

 

 

 

Distance in feet between the extremes of any group of two or more consecutive axles.

G.S. 20-118(c)(1) - Two consecutive sets of tandem axles may carry a gross weight of 34,000 pounds each without penalty provided the overall distance between the first and last axles (such as consecutive sets of tandem axles) is 36 feet or more.