Section 554.611  Permit Axle Spacing Requirements  

a)         The spacing requirements for all overweight loaded routine and superload permits, as well as all towed routine permits, are as follows:

1)         the spacing between the steer axle and the first axle on the tractor tandem may not be less than 8 feet 1 inch;

2)         the spacing before the first axle of the trailer may not be less than 18 feet 6 inches; and

3)         the sum of all axle spacings must be at least 43 feet 6 inches.

b)        All towed permits that do not meet these minimum spacing requirements will automatically be processed by the Department as a superload permit. 

(Source:  Added at 36 Ill. Reg. 13254, effective August 1, 2012)