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PURPLE OVERWEIGHT CHART


Maximum Allowable Weight Distribution for Annual Overweight
Permits on PURPLE coded routes of the Route Capacity Map.
This page in Printable Format (pdf)


Single Axle

30,000

Tandem Axle

51,500

Tridem Axle

64,500


Tire
Width

Single Axle,
Single Tires

Tandem Axle
Single Tires

8.25

13,200

26,400

9.00

14,400

28,800

10.00

16,000

32,000

11.00

17,600

35,200

12.00

19,200

38,400

13.00

20,800

41,600

14.00

22,400

44,800

15.00

24,000

48,000

16.00

25,600

51,200

17.00

27,200

51,500

18.00

28,800

51,500

19.00+

30,000

51,500

Maximum allowable weight is based on the distance in feet between the first and last axle of any group or groups of consecutive axles.

To find the weight allowed for the vehicle combination, use the number of axles and exle spacings from the number 2 axle to the last axle of the combination, add the weight for the steering axle (approximately 12,000 lbs) to this weight, to acquire the Total Gross Weight Allowed.

To find the weight allowed for self propelled vehicles, use the number of axles and axle spacings from the number 1 axle to the last axle of the combination. If axles have less than 4 tires per axle, see chart above for weights allowed.

Check the weight allowed for every internal group or groups of axles as well as total Gross Weight. At times the sum of the axle weights may be less than the Total Gross Weight Allowed. Must use most restrictive weights.

If the vehicle combination exceeds the weight allowed on any group or groups of axles, or Total Gross Weight Allowed by this chart and the route capacity map, the vehicle must operate on a single trip permit if approved.



Axle Space
in Feet

2
Axles

3
Axles

4
Axles

5
Axles

6
Axles

7
Axles

8
Axles

9
Axles

10
Axles

11
Axles

12
Axles

4

51,500











5

53,000











6

54,500











7

56,000











8

57,500

63,500










9

59,000

64,500










10

60,500

65,500










11

60,500

67,000










12

60,500

68,000

75,500









13

60,500

69,000

76,500









14

60,500

70,000

77,500









15

60,500

71,500

78,500









16

60,500

72,500

79,500

87,500








17

60,500

73,500

80,500

88,500








18

60,500

74,500

81,500

89,500








19

60,500

76,000

82,500

90,500








20

60,500

77,000

83,500

91,500

99,500







21

60,500

78,000

84,500

92,500

100,500







22

60,500

79,500

85,500

93,000

101,500







23

60,500

80,500

86,500

94,000

102,500







24

60,500

81,500

87,500

95,000

103,500

111,500






25

60,500

82,500

88,500

96,000

104,000

112,500






26

60,500

84,000

89,500

97,000

105,000

113,500






27

60,500

85,000

90,500

98,000

106,000

114,500






28

60,500

86,000

91,500

99,000

107,000

115,500

124,000





29

60,500

87,000

92,500

100,000

108,000

116,000

124,500





30

60,500

88,500

93,500

101,000

108,500

117,000

125,500





31

60,500

89,500

94,500

101,500

109,500

118,000

126,500





32

60,500

90,500

95,500

102,500

110,500

119,000

127,500

136,000




33

60,500

91,500

96,500

103,500

111,500

119,500

128,000

136,500




34

60,500

91,500

97,500

104,500

112,500

120,500

129,000

137,500




35

60,500

91,500

98,500

105,500

113,500

121,500

130,000

138,500




36

60,500

91,500

99,500

106,500

114,000

122,500

130,500

139,500

148,000



37

60,500

91,500

100,500

107,500

115,000

123,000

131,500

140,000

149,000



38

60,500

91,500

101,500

108,500

116,000

124,000

132,500

141,000

149,500



39

60,500

91,500

102,500

109,500

117,000

125,000

133,500

142,000

150,500



40

60,500

91,500

103,500

110,000

118,000

126,000

134,000

142,500

151,500

160,000


41

60,500

91,500

104,500

111,000

118,500

126,500

135,000

143,500

152,000

161,000


42

60,500

91,500

105,500

112,000

119,500

127,500

136,000

144,500

153,000

161,500


43

60,500

91,500

106,500

113,000

120,500

128,500

137,000

145,000

154,000

162,500


44

60,500

91,500

107,500

114,000

121,500

129,500

137,500

146,000

154,500

163,500

172,000

45

60,500

91,500

108,500

115,000

122,500

130,000

138,500

147,000

155,500

164,000

173,000

46

60,500

91,500

109,500

116,000

123,000

131,000

139,500

148,000

156,500

165,000

174,000

47

60,500

91,500

110,500

117,000

124,000

132,000

140,000

148,500

157,000

166,000

174,500

48

60,500

91,500

111,500

118,000

125,000

133,000

141,000

149,500

158,000

166,500

175,500

49

60,500

91,500

112,500

118,500

126,000

134,000

142,000

150,500

159,000

167,500

176,500

50

60,500

91,500

114,000

119,500

127,000

134,500

143,000

151,000

159,500

168,500

177,000

51

60,500

91,500

115,000

120,500

127,500

135,500

143,500

152,000

160,500

169,000

178,000

52

60,500

91,500

116,000

121,500

128,500

136,500

144,500

153,000

161,500

170,000

178,500

53

60,500

91,500

117,000

122,500

129,500

137,500

145,500

153,500

162,000

171,000

179,500

54

60,500

91,500

118,000

123,500

130,500

138,000

146,500

154,500

163,000

171,500

180,500

55

60,500

91,500

119,000

124,500

131,500

139,000

147,000

155,500

164,000

172,500

181,000

56

60,500

91,500

120,000

125,500

132,500

140,000

148,000

156,500

165,000

173,500

182,000

57

60,500

91,500

121,000

126,500

133,000

141,000

149,000

157,000

165,500

174,000

183,000

58

60,500

91,500

121,000

127,000

134,000

141,500

149,500

158,000

166,500

175,000

183,500

59

60,500

91,500

121,000

128,000

135,000

142,500

150,500

159,000

167,500

176,000

184,500

60

60,500

91,500

121,000

129,000

136,000

143,500

151,500

159,500

168,000

176,500

185,500

61

60,500

91,500

121,000

130,000

137,000

144,500

152,500

160,500

169,000

177,500

186,000

62

60,500

91,500

121,000

131,000

137,500

145,000

153,000

161,500

170,000

178,500

187,000

63

60,500

91,500

121,000

132,000

138,500

146,000

154,000

162,000

170,500

179,000

188,000

64

60,500

91,500

121,000

133,000

139,500

147,000

155,000

163,000

171,500

180,000

188,500

65

60,500

91,500

121,000

134,000

140,500

148,000

155,500

164,000

172,500

181,000

189,500

66

60,500

91,500

121,000

135,000

141,500

148,500

156,500

165,000

173,000

181,500

190,500

67

60,500

91,500

121,000

135,500

142,000

149,500

157,500

165,500

174,000

182,500

191,000

68

60,500

91,500

121,000

136,500

143,000

150,500

158,500

166,500

175,000

183,500

192,000

69

60,500

91,500

121,000

137,500

144,000

151,500

159,000

167,500

175,500

184,000

192,500

70

60,500

91,500

121,000

138,500

145,000

152,500

160,000

168,000

176,500

185,000

193,500

71

60,500

91,500

121,000

139,500

146,000

153,000

161,000

169,000

177,500

186,000

194,500

72

60,500

91,500

121,000

140,500

147,000

154,000

162,000

170,000

178,000

186,500

195,000

73

60,500

91,500

121,000

141,500

147,500

155,000

162,500

170,500

179,000

187,500

196,000

74

60,500

91,500

121,000

142,500

148,500

156,000

163,500

171,500

180,000

188,500

197,000

75

60,500

91,500

121,000

143,500

149,500

156,500

164,500

172,500

180,500

189,000

197,500

76

60,500

91,500

121,000

144,000

150,500

157,500

165,000

173,500

181,500

190,000

198,500

77

60,500

91,500

121,000

145,000

151,500

158,500

166,000

174,000

182,500

191,000

199,500

78

60,500

91,500

121,000

146,000

152,000

159,500

167,000

175,000

183,000

191,500

200,000

79

60,500

91,500

121,000

147,000

153,000

160,000

168,000

176,000

184,000

192,500

200,000

80

60,500

91,500

121,000

148,000

154,000

161,000

168,500

176,500

185,000

193,500

200,000

81

60,500

91,500

121,000

149,000

155,000

162,000

169,500

177,500

185,500

194,000

200,000

82

60,500

91,500

121,000

150,000

156,000

163,000

170,500

178,500

186,500

195,000

200,000

83

60,500

91,500

121,000

151,000

156,500

163,500

171,500

179,000

187,500

196,000

200,000

84

60,500

91,500

121,000

151,000

157,500

164,500

172,000

180,000

188,000

196,500

200,000

85

60,500

91,500

121,000

151,000

158,500

165,500

173,000

181,000

189,000

197,500

200,000

86

60,500

91,500

121,000

151,000

159,500

166,500

174,000

182,000

190,000

198,500

200,000

87

60,500

91,500

121,000

151,000

160,500

167,000

174,500

182,500

191,000

199,000

200,000

88

60,500

91,500

121,000

151,000

161,500

168,000

175,500

183,500

191,500

200,000

200,000

89

60,500

91,500

121,000

151,000

162,000

169,000

176,500

184,500

192,500

200,000

200,000

90

60,500

91,500

121,000

151,000

163,000

170,000

177,500

185,000

193,500

200,000

200,000

91

60,500

91,500

121,000

151,000

164,000

171,000

178,000

186,000

194,000

200,000

200,000

92

60,500

91,500

121,000

151,000

165,000

171,500

179,000

187,000

195,000

200,000

200,000

93

60,500

91,500

121,000

151,000

166,000

172,500

180,000

187,500

196,000

200,000

200,000

94

60,500

91,500

121,000

151,000

166,500

173,500

181,000

188,500

196,500

200,000

200,000

95

60,500

91,500

121,000

151,000

167,500

174,500

181,500

189,500

197,500

200,000

200,000

96

60,500

91,500

121,000

151,000

168,500

175,000

182,500

190,500

198,500

200,000

200,000

97

60,500

91,500

121,000

151,000

169,500

176,000

183,500

191,000

199,000

200,000

200,000

98

60,500

91,500

121,000

151,000

170,500

177,000

184,000

192,000

200,000

200,000

200,000

99

60,500

91,500

121,000

151,000

171,000

178,000

185,000

193,000

200,000

200,000

200,000

100

60,500

91,500

121,000

151,000

172,000

178,500

186,000

193,500

200,000

200,000

200,000

101

60,500

91,500

121,000

151,000

173,000

179,500

187,000

194,500

200,000

200,000

200,000

102

60,500

91,500

121,000

151,000

174,000

180,500

187,500

195,500

200,000

200,000

200,000

103

60,500

91,500

121,000

151,000

175,000

181,500

188,500

196,000

200,000

200,000

200,000

104

60,500

91,500

121,000

151,000

176,000

182,000

189,500

197,000

200,000

200,000

200,000

105

60,500

91,500

121,000

151,000

176,500

183,000

190,500

198,000

200,000

200,000

200,000
Page Last Modified: 5/22/2007 3:34:41 PM

Division of Motor Vehicles / Commercial Vehicle Services
Ports of Entry- (208) 334-8688
Motor Carrier- (208) 334-8611
Overlegal Permits- (208) 334-8420
or 1-800-662-7133 (in Idaho)

CVS@itd.idaho.gov

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Idaho Transportation Department
3311 W. State Street ยท P.O. Box 7129
Boise, ID 83707-1129