Code of Alabama
Article 2 - Size and Weight.
Section 32-9-29.1 - Special Permits for Movement of Certain Site-Built Buildings.

(a) The Director of the State Department of Transportation or the official of the State Department of Transportation designated by the director may, at his or her discretion, upon application and for good cause being shown therefor, issue special permits to the applicant, for movement on or over the public highways, for motor vehicles when used in the transportation of site-built residential buildings or otherwise, which had at one time been affixed to a permanent foundation; provided, however, that this section shall not extend to those motor vehicles used in the transportation of what is commonly referred to as mobile homes, house trailers, prefabricated housing, or other factory-built buildings.
The applicants for the permits issued under this section shall state if the route of the movement will cross one or more railroads at grade.
If such a crossing is to be made, the Director of the State Department of Transportation or the official of the State Department of Transportation designated will notify the railroad or railroads involved, stating the time and route of the anticipated move.
(b) The fee for the issuance of such permits shall be the same as set forth in Section 32-9-29(c).