Pine Grove Road over S Branch Pine River

Montcalm County, Michigan · rated Poor in the 2025 National Bridge Inventory

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

• Pine Grove Road over S Branch Pine River in Montcalm County, Michigan, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
• Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
• It was built in 1920 and reconstructed in 2004, making it 105 years old at the 2025 inventory.
• It carries about 333 vehicles a day (traffic count year 2003).
• Its listed owner is the county highway agency.
• It is one of 7 of the 121 inventoried bridges in Montcalm County rated poor (5.8%); 7 (5.8%) are rated poor.
• Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
• It was rated fair in the 2024 inventory and is now poor (substructure 5 to 4).
• Its most recent inspection on record is dated March 2024, on a 12-month routine inspection cycle.
• A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

View this bridge on a map → (43.42304, -84.95025)

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.