Get your Oversize/Overweight permits from the Rhode Island Division of Motor Vehicles. Contact them directly or apply through a permitting service with an additional charge.

Rhode Island Division of Motor Vehicles,

150 Midway Road
Suite 153
Cranston
Rhode Island
2920 United States

401 946-0090 (Phone)
401 946-0033 (Fax)

Visit below sites for help,
IRP Website : http://www.dmv.ri.gov/forms/
General Website: http://www.dmv.ri.gov