T-579 Hoon Road over Connoquenessing CR
Butler County, Pennsylvania · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- T-579 Hoon Road over Connoquenessing CR in Butler County, Pennsylvania, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1910 and reconstructed in 2006, making it 115 years old at the 2025 inventory.
- It carries about 100 vehicles a day (traffic count year 2015).
- Its listed owner is the county highway agency.
- It is one of 212 of the 374 inventoried bridges in Butler County rated fair (56.7%); 51 (13.6%) 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 2023, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (40.92244, -79.87755)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 60 ft |
| Location | 250 SE of SR 0038 |
| NBI structure number | 000000000008169 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | November 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 4: foundations stable, field review says exposed foundations need protection |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Pennsylvania department of transportation.
Busiest bridges in Butler County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-79 SR8079 SR9479 over Trib to Brush Creek | 1969 | 76,555 | Fair |
| SR0019 Nb&sb over Coal Run | 1952 | 43,366 | Fair |
| SR 0228 EB & WB over I-79 Nb&sb & SR9479 | 2000 | 42,813 | Good |
| SR0019 Nb&sb over Pa Turnpike Ramp R | 2004 | 34,726 | Good |
| SR0079 Nb&sb over Little Yellow Creek | 1963 | 29,865 | Fair |
| SR0079 Nb&sb over Black Run | 1964 | 29,114 | Fair |
All bridges nearby: Butler County, PA bridge conditions · every bridge in Butler County · Pennsylvania bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.