Federal & State Regulations | Size/Weight limits - Delaware

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	45'	45'
Straight Trucks	40'	40'
Straight truck and trailer	60'	60'
Tractor-semitrailer combinations	No limit	60'
Semitrailer	53'	53'
Tractor-twin-trailer combination	No limit	60'
Trailers of twin-trailer combinations	29'	29'
Auto-transporter	NS	65' exclusive of the overhang
Stinger-steered auto-transporter	80'	NS
Overhang limitations	4' front, 6' rear	NS
Saddlemount	97'	65'
General overhang limitations	3' front, 6' rear	3' front, 6' rear
Drawbar	15'	15'
Weight:	Interstate and Defense Highways	State and Other Supplemental Highways
Single axle	20,000	22,400
Tandem axle	34,000	36,000
Gross vehicle weight	80,000	80,000 State conditionally allows 90,000 pounds for certain poultry and agricultural vehicles
APU allowance	550	NS
Natural gas allowance	2,000 Includes battery powered	NS
Weight special limitations or restrictions	Delaware also maintains maximum GVW for 2, 3, and 4 axle straight trucks and 3, 4, and 5 axle combinations.

Bridge rules

Bridge Formula:

Table for maximum gross weights on non-interstate roads
Distance in feet between the extremes of any group of 2 or more consecutive axles	Maximum Load in Pounds Carried on 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	36,000	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	64,000	69,000	74,500
26		55,500	59,500	64,500	69,500	75,000
27		56,000	60,000	65,000	70,000	75,500
28		57,000	60,500	65,500	71,500	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			66,200	70,700	75,500
37			67,200	71,500	76,000
38			68,100	72,000	77,000
39			69,000	73,000	77,500
40			69,000	73,280	78,000
41			69,500	73,500	78,500
42			70,000	74,000	79,000
43				75,000	80,000
44				75,500
45				76,000
46				76,500
47				77,500
48				78,000
49				78,500
50				79,000
51				80,000

['Size and Weight Limits']

['Sizes and weights']