T-734 Chestnut St over Trout Run
Indiana County, Pennsylvania · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- T-734 Chestnut St over Trout Run in Indiana County, Pennsylvania, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 1 (imminent failure condition) on the 0-9 scale.
- It was built in 1977, making it 48 years old at the 2025 inventory.
- Its listed owner is a town or township highway agency.
- It is one of 54 of the 301 inventoried bridges in Indiana County rated poor (17.9%); 54 (17.9%) are rated poor.
- Its traffic status in the 2025 inventory is closed to all traffic (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated October 2023, on a 24-month routine inspection cycle.
- It is coded scour critical (NBI item 113 = 3): scour critical: foundations unstable for the assessed or calculated scour.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (40.42251, -78.99064)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 1 | 1 | Imminent failure condition |
Bridge details
| Structure | Concrete slab |
| Length | about 25 ft |
| Location | Btw T651 & SR0403 |
| NBI structure number | 000000000019480 |
| Condition class | Poor |
| Traffic status (item 41) | Closed to all traffic |
| Last inspection (item 90) | October 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 3: scour critical: foundations unstable for the assessed or calculated scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Pennsylvania department of transportation.
Busiest bridges in Indiana County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR0022 Eb&wb over Lear Rd | 1952 | 29,096 | Fair |
| SR0022 Eb&wb over Norfolk Southern RR | 1953 | 29,096 | Fair |
| SR0022 Eb&wb over SR0119 Nb&sb | 2003 | 21,499 | Good |
| SR0022 Eb&wb over Conemaugh River | 1951 | 20,532 | Fair |
| SR 0022 Eb&wb over SR 0217 & NS RR | 1951 | 20,532 | Fair |
| SR0286 over SR0422 Eb&wb | 1993 | 17,343 | Fair |
All bridges nearby: Indiana County, PA bridge conditions · every bridge in Indiana County · Pennsylvania bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.