Piqua-troy over Armco Access Road
Miami County, Ohio · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Piqua-troy over Armco Access Road in Miami County, Ohio, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
- It was built in 1977, making it 48 years old at the 2025 inventory.
- It carries about 2,235 vehicles a day (traffic count year 2015).
- Its listed owner is the county highway agency.
- It is one of 218 of the 312 inventoried bridges in Miami County rated good (69.9%); 18 (5.8%) 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 March 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 → (40.12166, -84.22844)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 65 ft |
| Location | 0.79 N of CR16 |
| NBI structure number | 5537274 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | March 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Ohio department of transportation.
Busiest bridges in Miami County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ir 75 over Ext of Boone Creek | 2001 | 66,840 | Good |
| Ir-75 over Clayton Ext. of Peters C | 1957 | 66,840 | Good |
| Ir-75 over W. Branch of Peters Cree | 1957 | 66,840 | Good |
| Ir-75 over Branch Great Miami River | 1957 | 54,110 | Fair |
| Ir-75 over County Ditch | 1957 | 54,110 | Fair |
| Ir-75 over Howell Extension Ditch | 1957 | 54,110 | Good |
All bridges nearby: Miami County, OH bridge conditions · every bridge in Miami County · Ohio bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.