Michigan Department of TransportationNational Bridge Inventory (NBI) data used the the Michigan Bridge Condition Dashboard . Data Last Updated: 12/22 /2025ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/4b702058540945aa81286f47c376eb8c_0engState of Michigan Open Data PortalPublicBridge Condition [Michigan]Web servicesMichiganLast Modified: 2025-12-22