US-31 over Commercial St
Benzie County, Michigan · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US-31 over Commercial St in Benzie County, Michigan, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 2000, making it 25 years old at the 2025 inventory.
- It carries about 9,566 vehicles a day (traffic count year 2007).
- Its listed owner is the state highway agency.
- It is one of 10 of the 25 inventoried bridges in Benzie County rated fair (40.0%); 7 (28.0%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated April 2023, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (44.62803, -86.09241)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Concrete deck arch |
| Length | about 149 ft |
| Location | N Lts of Benzonia |
| NBI structure number | 000000000000760 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Michigan department of transportation.
Busiest bridges in Benzie County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US-31 over Platte River | 1926 | 11,984 | Fair |
| Us-31|m-115|honor over Betsie River | 1984 | 8,344 | Fair |
| US-31|HONOR Hwy over Platte River | 1927 | 8,172 | Fair |
| M-22|lake St over Betsie River | 1924 | 4,712 | Fair |
| M-115 over Betsie River | 1940 | 2,595 | Fair |
| Lindy Road over Betsie River | 1962 | 1,826 | Poor |
All bridges nearby: Benzie County, MI bridge conditions · every bridge in Benzie County · Michigan bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.