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Auditor General > Work In Progress > Structure Program Division, Bureau of Bridges and Structures

Structure Program Division, Bureau of Bridges and Structures - 591-0300-25

Description of Agency

The Structure Program Division (SPD) is responsible for structure preservation and maintenance, including management of bridge request for action; region structures maintenance support; Statewide crews for reach all vehicles, signs, and bridge repair; emergency coordination; priority preservation of structures; and ancillary structures. SPD is also responsible for performing bridge load rating calculations, posting load rating information for Michigan Department of Transportation (MDOT)-owned bridges, and ensuring all local bridges have load ratings completed.

Audit Objectives

  1. To assess the effectiveness of SPD’s Bridge Load Rating Unit.

  2. To assess the effectiveness of SPD’s Ancillary Structures Unit.

  3. To assess the sufficiency of SPD’s efforts to preserve and maintain MDOT-owned bridges and structures.

  4. To assess the effectiveness of selected security and access controls over the ArcGIS and MiBRIDGE systems.

Timing

Estimated Release Date: February 2026

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