Tripp Road over Laird Creek
Hillsdale County, Michigan · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Tripp Road over Laird Creek in Hillsdale County, Michigan, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 3 (serious condition) on the 0-9 scale.
- It was built in 1920, making it 105 years old at the 2025 inventory.
- It carries about 37 vehicles a day (traffic count year 2014).
- Its listed owner is the county highway agency.
- It is one of 15 of the 104 inventoried bridges in Hillsdale County rated poor (14.4%); 15 (14.4%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated November 2024, on a 12-month routine inspection cycle.
- It is coded scour critical (NBI item 113 = 3): scour critical: foundations unstable for the assessed or calculated scour.
- 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 → (41.74731, -84.51477)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 3 | 3 | Serious condition |
| Superstructure | 3 | 3 | Serious condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Timber slab |
| Length | about 23 ft |
| Location | 0.3 Mi S of Camden Road |
| NBI structure number | 000000000003353 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | November 2024 |
| Inspection interval (item 91) | 12 months |
| Scour (item 113) | 3: scour critical: foundations unstable for the assessed or calculated scour |
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.