Ill. Admin. Code tit. 92, § 554.430
The assigned permit route includes a distance of one mile onto another contiguous state jurisdiction highway provided that no structures are crossed, no posted weight limits are exceeded, overdimensional moves are not obstructed, all other provisions of the permit are followed and the route is used for any of the following reasons:
(Source: Added at 24 Ill. Reg. 18765, effective December 8, 2000)