SR 129 over Mill Creek
Butler County, Ohio · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR 129 over Mill Creek in Butler County, Ohio, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1999, making it 26 years old at the 2025 inventory.
- It carries about 36,477 vehicles a day (traffic count year 2015).
- Its listed owner is the state highway agency.
- It is one of 237 of the 377 inventoried bridges in Butler County rated good (62.9%); 15 (4.0%) 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 November 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 → (39.3825, -84.47612)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 7 | Good condition |
Bridge details
| Structure | Steel culvert |
| Length | about 48 ft |
| Location | .12 Mi E Lib-fairfield Rd |
| NBI structure number | 0903442 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | November 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Ohio department of transportation.
Busiest bridges in Butler County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ir 75 over Mason Road | 2010 | 113,089 | Good |
| Ir-75 South over C131(LESOURDESVL W C Rd) | 1960 | 68,525 | Good |
| Ir-75 North over C131(LESOURDESVL W C Rd) | 1960 | 68,525 | Good |
| Ir 75 over Norfolk Southern RR | 1960 | 65,877 | Good |
| Ir 75 over Norfolk Southern RR | 1960 | 65,877 | Fair |
| Ir 75 over Norfolk Southern RR | 1960 | 59,060 | Good |
All bridges nearby: Butler County, OH bridge conditions · every bridge in Butler County · Ohio bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.