The Minnesota Department of Transportation currently has a Special Provisions 2350/2360 on file that allows the use of Manufacturers' recycled asphalt shingles (RAS) in hot mix asphalt (HMA).  There is also a draft specification 2382 on file in the bituminous office which include certification forms that are required from the processor and the manufacturer.  No asbestos testing is required in the use of the manufacturers RAS.  A link to the special provisions specification is available below. 

Over the past three years Minnesota has conducted several tear-off RAS demonstrations.  These demonstrations have been possible through the partnerships between Mn/DOT, Metro Counties, Townships, the Office of Environmental Assistance (OEA/MPCA), the University of Minnesota, Civil Engineering Department along with many other supporting partners.  The demonstrations have allowed RAS from single family homes only.  Residential homes are not regulated by the state agencies that require asbestos testing.  The roofing companies along with the shingle recycling operators certified in writing that the tear-off shingles came from private, single family homes.  The demonstrations have also included laboratory testing of both manufacturers' and tear-off shingle HMA conducted by Mn/DOT and the University of Minnesota, Civil Engineering Department. Please visit the link below on Current Research Projects to see more details on Minnesota's demonstration projects.

There are currently three shingle recycling operators using manufacturers' RAS in Minnesota.  Please refer to the link below to contact these operators.

Minnesota State Contacts

Minnesota Shingle Recycling Operators  

Minnesota Draft Specification for Manufacturers' Recycled Asphalt Shingles

Minnesota Combined 2360/2350 (Gyratory/Marshall Design) Specification [See page 4, 2360.2 A2h and page 10, B2a: Mixture Aggregate Requirements, Note (3)]

Minnesota Current Research Projects

In April 2003 the Minnesota Department of Transportation sponsored the Second Recycling Asphalt Shingles Forum.  All presentations from the forum are available at:  Second Recycled Asphalt Shingles Forum - April 2003

Minnesota Shingle Recycling Fact Sheets