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Oversize Overweight OS/OW Superload
Exceeding
53' trailer length,
8'6" wide, and
14' high
Exceeding
80,000 lbs.
Road Use Fee
is accrued
Exceeding legal
weight and dimension
Exceeding
120' long,
16' wide,
16' high, and
200,000 lbs.
Single Trip =
$28.00
Round trip =
$33.00
Single Trip =
$33.00 + Road Use
Fee (see chart at
bottom of page)
Round Trip =
$42.00 + Road
Use Fee
Single Trip =
$33.00 + Road Use
Fee (see chart at
bottom of page)
Round Trip =
$42.00 + Road
Use Fee
TBD upon review of
of written statement
on proposed route,
diagram with weight
distribution, dimensions
and load description
When Escorts are Needed: # of Escorts:
On 2 Lane Highway
Width over 12' 1 front
Width over 14' 2 (front and rear)
Length over 100' 1 rear
On Interstate System
Width over 15' 1 rear
Length over 120' 1 rear
Height over 16' 1 front
Width over 12' up to 14'8? 1 rear
Width 14'8? - 16' 2 (front and rear)
A 3rd escort may be required with a load of such extreme dimensions for tour of travel as to require holding opposing traffic at turnouts and intersections. 

Oversize loads which individually would require an escort may travel in convoy (not over 4 loads and not mobile homes) 2 - front and rear.

Max width of units in convoy limited to 14'6" wide or max length of 100' on red or 120' on interstate system or on black coded routes on map

Max width of units in convoy limited to 12'6" width or max of 100' length on red-coded routes.

Overhang Requirements:

Maximum legal overhang allowed is 4' (four feet) front and 15' (fifteen feet) rear,
from center last axle to end of the load. Overhang exceeding these dimensions will
require an over length permit.

Police Escorts:

No set price for a Highway Patrol Escort has been established for the Idaho. If one should be required, the price is to be decided by the D.O.T. based on Load, distance, and time dedicated.

Permits Valid For:

Single Trip Permits are valid for five (5) consecutive days.

Operating Time

Permitted loads are allowed travel one-half hour before Sunrise to one-half hour after Sunset.  If dimensions are 110' long x 10' wide x and 14'6รถ high or less, travel is allowed twenty-four (24) hours a day, seven (7) days a week.

Weekend Travel

Weekend travel is allowed on the majority of routes from one-half hour before Sunrise until one half hour after Sunset.

Divisible Loads

A carrier may acquire a permit to exceed 80,000 lbs. GVW on interstates, but may not exceed legal axle weights and must be registered the amount of weight hauled.  An excessive weight permit may be obtained for loads up to 105,500 lbs. in weight as long as the load does not exceed legal axle weights.  This is for reducible loads only.

Exceptions

Depending on the routes and situation, blades, buckets, attachments, etc. may be taken off and hauled on the same trailer.  The state will advise the permit applicant on a case by case basis in these instances.

Restricted Travel

Carriers hauling permitted loads must contact local authorities to obtain permission to operate off of the state highway system. If over 85' long x 12' wide x 16' high, travel is prohibited from moving between 6:30 - 8:30 a.m. and 4:00 - 6:00 p.m. in Boise, Caldwell, Coeur d' Alene, Idaho Falls, Lewiston, Nampa, Pocatello, Twin Falls, Garden City and Chubbuck.

Spring Weight Restrictions

Certain routes may be restricted during the spring and speeds may be reduced.  Spring weight restrictions will be updated on state page as they are released by the DOT.

Superload Requirements

Loads or vehicles that are 120' long x 16' wide x 16' high and 200,000 lbs. are considered Super-loads.  Applicants must submit a written statement on the necessity and feasibility of the proposed shipment, as well as a schematic drawing showing axle placement, distance between axles and distribution of gross weight on each axle.  All loads with dimensions over 120' long x 16' wide x and 16' high must be approved by the district through which the load is traveling.

Road Use Fee Chart:

The gross weight and number of axles determine the road use fee per mile. The minimum road use fee is $0.04 per mile .

If the dollar amount is not on the chart, you will need to add $0.07 to the last dollar amount in the column and keep adding $0.07 for every 2,000lbs.

Gross weight in LBS Number of Axles
2 3 4 5 6 7 8 9 10 11 12
80,001 TO 82,000 $0.84 $0.56 $0.28 $0.04
82,001 TO 84,000 $0.88 $0.60 $0.32 $0.08
84,00 TO 86,000 $0.92 $0.64 $0.36 $0.12
86,001 TO 88,000 $0.96 $0.68 $0.40 $0.16
88,001 TO 90,000 $1.00 $.72 $0.44 $0.20
90,001 TO 92,000 $1.07 $0.76 $0.48 $0.24
92,001 TO 94,000 $0.80 $0.52 $0.28
94,001 TO 96,000 $0.84 $0.56 $0.32
96,001 TO 98,000 $0.88 $0.60 $0.36 $0.04
98,001 TO 100,000 $0.92 $0.64 $0.40 $0.08
100,001 TO 102,000 $0.96 $0.68 $0.44 $0.12
102,001 TO 104,000 $1.00 $0.72 $0.48 $0.16
104,001 TO 106,000 $1.07 $0.76 $0.52 $0.20
106,001 TO 108,000 $0.80 $0.56 $0.24
108,001 TO 110,000 $0.84 $0.60 $0.28
110,001 TO 112,000 $0.88 $0.64 $0.32
112,001 TO 114,000 $0.92 $0.68 $0.36
114,001 TO 116,000 $0.96 $0.72 $0.40 $0.04
116,001 TO 118,000 $1.00 $0.76 $0.44 $0.08
118,001 TO 120,000 $1.07 $0.80 $0.48 $0.12
120,001 TO 122,000 $0.84 $0.52 $0.16
122,001 TO 124,000 $0.88 $0.56 $0.20
124,001 TO 126,000 $0.92 $0.60 $0.24
126,001 TO 128,000 $0.96 $0.64 $0.28
128,001 TO 130,000 $1.00 $0.68 $0.32
130,001 TO 132,000 $1.02 $0.72 $0.36 $0.04
132,001 TO 134,000 $1.09 $0.76 $0.40 $0.08
134,001 TO 136,000 $1.16 $0.80 $0.44 $0.12
136,001 TO 138,000 $1.23 $0.84 $0.48 $0.16
138,001 TO 140,000 $1.30 $0.88 $0.52 $0.20
140,001 TO 142,000 $1.37 $0.92 $0.56 $0.24
142,001 TO 144,000 $1.44 $0.96 $0.60 $0.28
144,001 TO 146,000 $1.51 $1.00 $0.64 $0.32
146,001 TO 148,000 $1.58 $1.02 $0.68 $0.36
148,001 TO 150,000 $1.65 $1.09 $0.72 $0.40 $0.04
150,001 TO 152,000 $1.72 $1.16 $0.76 $0.44 $0.08
152,001 TO 154,000 $1.79 $1.23 $0.80 $0.48 $0.12
156,001 TO 158,000 $1.86 $1.30 $0.84 $0.52 $0.16
158,001 TO 160,000 $2.00 $1.44 $0.92 $0.60 $0.24
160,001 TO 162,000 $1.51 $0.96 $0.64 $0.28
162,001 TO 164,000 $1.58 $1.00 $0.68 $0.32
164,001 TO 166,000 $1.65 $1.02 $0.72 $0.36 $0.04
166,001 TO 168,000 $1.72 $1.09 $0.76 $0.40 $0.08
168,001 TO 170,000 $1.79 $1.16 $0.80 $0.44 $0.12
170,001 TO 172,000 $1.76 $1.23 $0.84 $0.48 $0.16
172,001 TO 174,000 $1.93 $1.30 $0.88 $0.52 $0.20
174,001 TO 176,000 $2.00 $1.37 $0.92 $0.56 $0.24
176,001 TO 178,000 $2.07 $1.44 $0.96 $0.60 $0.28
178,001 TO 180,000 $1.51 $1.00 $0.64 $0.32
180,001 TO 182,000 $1.58 $1.02 $0.68 $0.36
182,001 TO 184,000 $1.65 $1.09 $0.72 $0.40 $0.04
184,001 TO 186,000 $1.72 $1.16 $0.76 $0.44 $0.08
186,001 TO 188,000 $1.79 $1.23 $0.80 $0.48 $0.12
188,001 TO 190,000 $1.86 $1.30 $0.84 $0.52 $0.16
190,001 TO 192,000 $1.93 $1.37 $0.88 $0.56 $0.20
192,001 TO 194,000 $2.00 $1.44 $0.92 $0.60 $0.24
194,001 TO 196,000 $2.07 $1.51 $0.96 $0.64 $.028
196,001 TO $198,000 $2.14 $1.55 $1.00 $0.68 $0.32
198,001 TO 200,000 $2.21 $1.65 $1.02 $0.72 $0.36 $0.04
Gross Weight in LBS Number of Axles
SUPERLOAD PLUS 7 8 9 10 11 12
200,001 TO 202,000 $2.28 $1.72 $1.09 $0.76 $0.40 $0.08
202,001 TO 204,000 $2.35 $1.79 $1.16 $0.80 $0.44 $0.12
204,001 TO 206,000 $2.42 $1.86 $1.23 $0.84 $0.48 $0.16
206,001 TO 208,000 $2.49 $1.93 $1.30 $0.88 $0.52 $0.20
208,001 TO 210,000 $2.56 $2.00 $1.37 $0.92 $0.56 $0.24
210,001 TO 212,000 $2.63 $2.07 $1.44 $0.96 $0.60 $0.28
212,001 TO 214,000 $2.14 $1.51 $1.00 $0.64 $0.32
214,001 TO 216,000 $2.21 $1.58 $1.02 $0.68 $0.36
216,001 TO 218,000 $2.28 $1.65 $1.09 $0.72 $0.40
218,001 TO 220,000 $2.35 $1.72 $1.16 $0.76 $0.44
220,001 TO 222,000 $2.42 $1.79 $1.23 $0.80 $0.48
222,001 TO 224,000 $2.49 $1.86 $1.30 $0.8 $0.52
224,001 TO 226,000 $2.56 $1.93 $1.37 $0.88 $0.56
226,001 TO 228,000 $2.63 $2.00 $1.44 $0.92 $0.60
228,001 TO 230,000 $2.70 $2.07 $1.51 $0.96 $0.64
230,001 TO 232,000 $2.77 $2.14 $1.58 $1.00 $0.68
232,001 TO 234,000 $2.84 $2.21 $1.65 $1.04 $0.72
234,001 TO 236,000 $2.91 $2.28 $1.72 $1.09 $0.76
236,001 TO 238,000 $2.98 $2.35 $1.79 $1.16 $.80
238,001 TO 240,000 $3.05 $2.42 $1.86 $1.23 $0.84
240,001 TO 242,000 $3.12 $2.49 $1.93 $1.30 $0.88
242,001 TO 244,000 $3.19 $2.56 $2.00 $0.37 $0.92
244,000 TO 246,000 $3.26 $2.63 $2.07 $1.44 $0.96
246,001 TO 248,000 $3.33 $2.70 $2.14 $1.51 $1.00
248,001 TO 250,000 $3.40 $2.77 $2.21 $1.58 $1.02
250,001 TO 252,000 $3.47 $2.84 $2.28 $1.65 $1.09
252,001 TO 254,000 $3.54 $2.91 $2.35 $1.72 $1.16
254,001 TO 256,000 $3.61 $2.98 $2.42 $1.79 $1.23
256,001 TO 258,000 $3.68 $3.05 $$2.49 $1.86 $1.30
258,001 TO 260,000 $3.75 $3.12 $2.56 $1.93 $1.37
260,001 TO 262,000 $3.82 $3.19 $2.63 $2.00 $1.44
262,001 TO 264,000 $3.89 $3.26 $2.70 $2.07 $1.51
264,001 TO 266,000 $3.96 $3.33 $2.77 $2.14 $1.58
266,001 TO 268,000 $4.03 $3.40 $2.84 $2.21 $1.65
268,001 TO 270,000 $4.10 $3.47 $2.91 $2.28 $1.72
270,001 TO 272,000 $4.17 $3.54 $2.98 $2.35 $1.79
272,001 TO 274,000 $4.24 $3.61 $3.05 $2.42 $1.86
274,000 TO 276,000 $4.31 $3.68 $3.12 $2.49 $1.93
276,001 TO 278,000 $4.35 $3.75 $3.19 $2.56 $2.00
278,001 TO 280,000 $4.38 $3.82 $3.26 $2.63 $2.07