Mt. Zion Rd. over Trib Rocky Fork
Richland County, Ohio · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mt. Zion Rd. over Trib Rocky Fork in Richland County, Ohio, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 9 (excellent condition) on the 0-9 scale.
- It was built in 2012, making it 13 years old at the 2025 inventory.
- It carries about 385 vehicles a day (traffic count year 2015).
- 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.
- 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 July 2023, 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 → (40.73584, -82.42047)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 9 | 9 | Excellent condition |
| Superstructure | 9 | 9 | Excellent condition |
| Substructure | 9 | 9 | Excellent condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 61 ft |
| Location | 2.5M E of SR-39 |
| NBI structure number | 7034830 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 2023 |
| 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 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.