Tripp Road over E Br St Joseph River
Hillsdale County, Michigan · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Tripp Road over E Br St Joseph River in Hillsdale County, Michigan, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2013, making it 12 years old at the 2025 inventory.
- It carries about 40 vehicles a day (traffic count year 2014).
- Its listed owner is the county highway agency.
- It is one of 28 of the 104 inventoried bridges in Hillsdale County rated good (26.9%); 15 (14.4%) 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 October 2024, on a 24-month routine inspection cycle.
- 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 → (41.86308, -84.51411)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 40 ft |
| Location | 0.5 Mi S of M-99 |
| NBI structure number | 000000000013624 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Michigan department of transportation.
Busiest bridges in Hillsdale County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US-12 over St Joseph River | 1999 | 15,669 | Fair |
| US-127 over Beecher Creek | 1991 | 5,142 | Fair |
| US-127 over Bean Creek | 1947 | 5,136 | Fair |
| US-127 over Bean Creek | 1947 | 5,136 | Fair |
| Fayette St over St Joseph River | 2022 | 3,798 | Good |
| US-127 over Blanchard Drain | 1948 | 3,056 | Poor |
All bridges nearby: Hillsdale County, MI bridge conditions · every bridge in Hillsdale County · Michigan bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.