| AASHTO |
Illinois Department of Transportation |
| American Concrete Pavement Association |
Illinois Whitetopping |
| American Highway Users Alliance |
Innovative Pavement Research Foundation |
| American Road & Transportation Builders Association |
International Society for Concrete Pavements |
| American Segmental Bridge Institute |
National Highway Institute |
| Better Roads |
Road Information Program |
| Center for Portland Cement Concrete Pavement Technology |
Transportation Research Board |
| Federal Aviation Administration |
US Department of Transportation |
| Federal Highway Administration |
State Transportation Websites |
| Federal Highway Administration - Pavements |
American Concrete Institute - Illinois Chapter |
| Office of Highway Policy Information |
Highway Research Center |