Thin Maintenance Surfaces Handbook (2007) (7 MB)

Project Selection Guidance for Cold In-Place Recycled Pavements (207 KB)

Guidance document for an IHRB-sponsored research project that provides guidance on considering project for possible CIR use in Iowa, based on research and typical practices in the state and also national and international research

Performance of Recycled Asphalt Shingles in Hot Mix Asphalt: Wisconsin DOT’s Project Involvement (338 KB)

Performance of Recycled Asphalt Shingles in Hot Mix Asphalt (441 KB)

Performance of Recycled Asphalt Shingles in Hot Mix Asphalt: Missouri DOT’s Project Involvement (347 KB)

Performance of Recycled Asphalt Shingles in Hot Mix Asphalt: Minnesota DOT’s Project Involvement (343 KB)

Performance of Recycled Asphalt Shingles in Hot Mix Asphalt: Iowa DOT’s Project Involvement (322 KB)

Performance of Recycled Asphalt Shingles in Hot Mix Asphalt: Indiana DOT’s Project Involvement (327 KB)

Performance of Recycled Asphalt Shingles in Hot Mix Asphalt: Illinois DOT’s Project Involvement (349 KB)

New Iowa State facility ramps up bio-polymer production for asphalt