There are various structural systems requiring review and acceptance of design concepts, construction requirements, typical shop drawings, other supporting information, and project references. These systems may be covered by the Standard Specifications for Road and Bridge Construction or by Guide Bridge Special Provisions listed with IDOT. These lists are updated periodically as needed. The lists provide, Company names, address, contact information and system names of all systems prequalified to supply the specific system for IDOT.
Companies interested in providing services/products to be used in construction projects must first obtain prequalification by the department.
Companies may be classified as "inactive" or "d-flagged" for several reasons which includes: Company going out of business, lack of providing services for several years, material problems, etc. Companies have the capability of becoming "active" status again by complying with the requirements as stated in the appropriate specifications.
Navigate to the appropriate list to continue:
Bureau of Bridges and Structures
Division of Highways