M-59 EB over Ryan Rd

Macomb County, Michigan · rated Good in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

• M-59 EB over Ryan Rd in Macomb County, Michigan, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
• Its lowest-rated component is the superstructure, rated 7 (good condition) on the 0-9 scale.
• It was built in 1972 and reconstructed in 2009, making it 53 years old at the 2025 inventory.
• It carries about 44,118 vehicles a day (traffic count year 2007).
• Its listed owner is the state highway agency.
• It is one of 179 of the 417 inventoried bridges in Macomb County rated good (42.9%); 30 (7.2%) are rated poor.
• A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

View this bridge on a map → (42.62421, -83.07177)

Component ratings

Bridge details

Source: FHWA National Bridge Inventory, 2025 data as reported by the Michigan department of transportation.

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Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.