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Ancillary Structures
Ancillary Structures
MDOT's Ancillary Structures Unit implements the department's asset management program for ancillary structures per the Michigan Ancillary Structures Manual (MiASM). They perform comprehensive asset management of ancillary structures, serve as MDOT's ancillary structures expert, and provide data to region staff regarding ancillary structure inventory, inspection, and maintenance issues. They also perform structural design technical reviews of detailed shop drawings and field construction related documents required to be submitted for review and approval.
Ancillary Structures
- Sign Cantilever
- Communication Tower
- Dynamic Message Sign (DMS) Support Structure
- Environmental Sensor Station (ESS) Lattice Tower
- Lighting Tower
- Noise Barrier Wall
- Retaining Wall
- Spun Concrete Pole
- Steel Strain Pole
- Sign Truss
- Wood Pole
- Culverts Less Than 10 Feet
- Frangible Lights
- Non-Frangible Lights
- Embedded Poles
- Mast Arms
Resources
Michigan Ancillary Structure Inspection Manual (MiASIM)
Cantilever, Type E Installation Inspection Procedure
Cantilever, Type J Installation Inspection Procedure
Frangible Light Standard Installation Inspection Procedure
Non-Frangible Light Standard Installation Inspection Procedure
Tower Lighting Unit Installation Inspection Procedure
Dynamic Message Sign Support Structure Installation Inspection Procedure
Mast Arm, CAT I, II, III Installation Inspection Procedure
Contacts
Michelle O'Neill, Ancillary Structures Program Manager
Vacant, Statewide Ancillary Structures Assistant Program Manager
Sue Taylor, Sign Cantilever/Truss Specialist
Tom Zurburg, Noise Wall Specialist
Michelle Harris, Ancillary Structures Transportation Technician