Federal & State Regulations | Size/Weight limits - Vermont

Dimension	National Network	State and Other Supplemental Highways
Width:	8' 6"	8' 6"
Height:	13' 6"	13' 6"
Length:	National Network	State and Other Supplemental Highways
Bus
Articulated bus
Straight Trucks	46'	46'
Straight truck and trailer	75'	75'
Tractor-semitrailer combinations	No limit with legal trailer	75' on US RT 4 from the New Hampshire line to the Jct. of VT RT 100 South a no-fee permit is required if the length is 68' to 72'. If length exceeds 72', a single trip permit is required.
Semitrailer	53' see KPRA	53' see KPRA
Tractor-twin-trailer combination	No limit with legal trailer	Not allowed unless on approved routing
Trailers of twin-trailer combinations	28'	Not allowed unless on approved routing
Boat-transporter combination
Overhang limitations
Stinger-steered boat-transporter
Overhang limitations
Auto-transporter
Overhang limitations
Stinger-steered auto-transporter
Overhang limitations
Saddlemount
General overhang limitations
Drawbar
Dromedary
Kingpin to rearaxle	41' to the center of the rearmost axle group	41' to the center of the rearmost axle group
Length special limitations or restrictions
Weight:	Interstate and Defense Highways	State and Other Supplemental Highways
Steer axle	600 lb/in	600 lb/in
Single axle	20,000	22,400
Tandem axle	34,000	36,000
Tridem axle
Gross vehicle weight	80,000	80,000
Load per inch width of tire	600	600
Per wheel
Tolerances	none	5% on gross, 10% on axles
APU allowance
Natural gas allowance
Weight special limitations or restrictions	A trunnion axle with 8 wheels in line is considered a tandem axle on state highways.

Bridge rules

Gross weight table
Distance between the center of the first and center of the last axle of any group of two or more axles	Maximum load in pounds carrier in any group of two or more axles computed to the nearest 500 pounds
	2 axles	3 axles	4 axles	5 axles	6 axles	7 axles
8 or less	34,000	34,000
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
17		48,500	53,500
18		49,500	54,000
19		50,000	54,500
20		51,000	55,500		66,000
21		51,500	56,000		66,500
22		52,500	56,500		67,000
23		53,000	57,500		68,000
24		54,000	58,000		68,500	74,000
25		54,500	58,500		69,000	74,500
26		55,500	59,500		69,500	75,000
27		56,000	60,000		70,000	75,500
28		57,000	60,500		71,000	76,500
29		57,500	61,500		71,500	77,000
30		58,500	62,000		72,000	77,500
31		59,000	62,500		72,500	78,000
32		60,000	63,500		73,000	78,500
33			64,000		74,000	79,000
34			64,500		74,500	80,000
35			65,500		75,000	80,000
36			66,000	70,500	75,500	80,000
37			66,500	71,000	76,000	80,000
38			67,500	72,000	77,000	80,000
39			68,000	72,500	77,500	80,000
40			68,500	73,000	78,000	80,000
41			69,500	73,500	78,500	80,000
42			70,000	74,000	79,000	80,000
43				75,000	80,000	80,000
44				75,500	80,000	80,000
45				76,000	80,000	80,000
46				76,500	80,000	80,000
47				77,500	80,000	80,000
48				78,000	80,000	80,000
49				78,500	80,000	80,000
50				79,000	80,000	80,000
51				80,000	80,000	80,000

View agency contact information

['Size and Weight Limits']

['Sizes and weights']

...

Size/Weight limits - Vermont

Bridge rules