Please note that the Materials and Tests Unit for NCDOT has established a policy that all Ready Mixed Concrete plants are required to have a third-party certification in order to be on the NCDOT Approved List and supply concrete to NCDOT projects.  To improve effectiveness and accessibility, the process for submitting third-party documentation has been streamlined.  All submissions must now be submitted to

Please reference memo below for more details:

Mailbox for 3rd party Inspection Documentation from Sep. 01, 2019