SR-29 over Great Miami River
Shelby County, Ohio · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR-29 over Great Miami River in Shelby County, Ohio, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1988, making it 37 years old at the 2025 inventory.
- It carries about 8,109 vehicles a day (traffic count year 2015).
- Its listed owner is the state highway agency.
- It is one of 202 of the 274 inventoried bridges in Shelby County rated good (73.7%); 5 (1.8%) 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 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 → (40.28433, -84.15039)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 273 ft |
| Location | .33MI. SE. of Jct. SR-47 |
| NBI structure number | 7500254 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 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 Ohio department of transportation.
Busiest bridges in Shelby County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ir-75 over Great Miami River | 2005 | 46,838 | Good |
| Ir-75 over Tr 39 Kirkwood Road | 1960 | 23,419 | Fair |
| Ir-75 over Tr 39 Kirkwood Road | 1960 | 23,419 | Good |
| Ir-75 over Tr 135 Vandemark Road | 1960 | 23,419 | Good |
| Ir-75 over Tr 135 Vandemark Road | 1960 | 23,419 | Good |
| SR-47 over Ir 75 | 1961 | 22,694 | Good |
All bridges nearby: Shelby County, OH bridge conditions · every bridge in Shelby County · Ohio bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.