MDOT's Use of Warranties - 591-0320-20

Description of Agency

The Michigan Department of Transportation (MDOT) monitors warranties applied to road and bridge construction projects. MDOT uses the Statewide Warranty Administration Database (SWAD) to track warranties and to identify warranties due for inspection or requiring corrective action. For the period October 1, 2017 through March 31, 2020, MDOT had 877 active warranties.

Audit Objectives

  1. To assess the effectiveness of MDOT’s efforts to monitor its road and bridge corrective action warranty work.

  2. To assess the sufficiency of MDOT’s efforts to evaluate the overall value of requiring warranties.

  3. To assess the effectiveness of MDOT’s efforts to ensure the completeness and accuracy of information in MDOT’s SWAD.


Estimated Release Date: March 2021

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