Murphy Road over Branch of Shenango
Mercer County, Pennsylvania · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Murphy Road over Branch of Shenango in Mercer 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 1963, making it 62 years old at the 2025 inventory.
- It carries about 78 vehicles a day (traffic count year 2019).
- Its listed owner is the county highway agency.
- It is one of 65 of the 437 inventoried bridges in Mercer County rated poor (14.9%); 65 (14.9%) 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 April 2023, on a 24-month routine inspection cycle.
- It is coded scour critical (NBI item 113 = 1): scour critical: field review indicates failure of piers or abutments is imminent.
- 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 → (41.47426, -80.3988)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 3 | 3 | Serious condition |
| Substructure | 1 | 1 | Imminent failure condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 22 ft |
| Location | 1mi East of Rt 58 |
| NBI structure number | 000000000026139 |
| Condition class | Poor |
| Traffic status (item 41) | Closed to all traffic |
| Last inspection (item 90) | April 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 1: scour critical: field review indicates failure of piers or abutments is imminent |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Pennsylvania department of transportation.
Busiest bridges in Mercer County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 80 Eb/wb & Ramp over Hogback Run | 1966 | 26,925 | Good |
| SR 79 Nb/sb over over Pine Run | 1963 | 21,958 | Fair |
| SR 80 EB over over SR 718 Sieg Hill Rd | 1964 | 13,718 | Fair |
| SR 80 EB over over Abandon RR &shngo R | 1966 | 13,718 | Fair |
| SR 80 EB over over SR 18 New Castle Rd | 1993 | 13,718 | Good |
| SR 60 Nb/sb Beaver over over Hogback Run | 1966 | 13,476 | Fair |
All bridges nearby: Mercer County, PA bridge conditions · every bridge in Mercer County · Pennsylvania bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.