Mahaffey Hill Rd over Norfolk Southern
Westmoreland County, Pennsylvania · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mahaffey Hill Rd over Norfolk Southern in Westmoreland County, Pennsylvania, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1990, making it 35 years old at the 2025 inventory.
- It carries about 250 vehicles a day (traffic count year 2012).
- Its listed owner is a town or township highway agency.
- It is one of 291 of the 618 inventoried bridges in Westmoreland County rated fair (47.1%); 97 (15.7%) 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 2022, 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 → (40.37438, -79.76212)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 66 ft |
| Location | 350 W of 993 In Cavettsv |
| NBI structure number | 000000000036870 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | November 2022 |
| 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 Pennsylvania department of transportation.
Busiest bridges in Westmoreland County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 0030 over Mt Pleasant Rd (County) | 1959 | 51,342 | Fair |
| Pa Tpk (I-76) over Lyons Run | 1952 | 46,261 | Fair |
| Pa Tpk (I-76) over Lyons Run;wb-502 | 1952 | 46,261 | Fair |
| Pa Tpk (I-76) over Byers Run | 1952 | 46,261 | Fair |
| Pa Tpk (I-76) over SR 4017; Brush Hill Rd | 1952 | 46,261 | Fair |
| Pa Tpk (I-76) over T-755 Pennsylvania Ave. | 1952 | 46,261 | Fair |
All bridges nearby: Westmoreland County, PA bridge conditions · every bridge in Westmoreland County · Pennsylvania bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.