Plymouth Springmil over Trib to Huron River
Richland County, Ohio · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Plymouth Springmil over Trib to Huron River in Richland County, Ohio, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 9 (excellent condition) on the 0-9 scale.
- It was built in 2011, making it 14 years old at the 2025 inventory.
- It carries about 1,232 vehicles a day (traffic count year 2018).
- Its listed owner is the county highway agency.
- It is one of 235 of the 358 inventoried bridges in Richland County rated good (65.6%); 18 (5.0%) 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 → (40.97932, -82.65859)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 9 | Excellent condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 22 ft |
| Location | 0.70 Mi N of Dinninger Rd |
| NBI structure number | 7035284 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Ohio department of transportation.
Busiest bridges in Richland County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Usr 30 over over Ric-039-1385 | 2021 | 40,950 | Good |
| Usr 30 over over Ric-215-0133 Ch | 2021 | 40,230 | Good |
| Usr 30 over over Ric-545-0198 | 2021 | 35,400 | Good |
| Usr 30 over over Ashland Railway | 2021 | 28,500 | Good |
| Ir 71 over Ric-546-0384 | 2006 | 24,252 | Good |
| Ir 71 over Ric-546-0382 | 2006 | 24,252 | Good |
All bridges nearby: Richland County, OH bridge conditions · every bridge in Richland County · Ohio bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.