T-628 Q.dam Road over Quemahoning Reservoir
Somerset County, Pennsylvania · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- T-628 Q.dam Road over Quemahoning Reservoir in Somerset 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 1939 and reconstructed in 2014, making it 86 years old at the 2025 inventory.
- It carries about 350 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 242 of the 455 inventoried bridges in Somerset County rated fair (53.2%); 60 (13.2%) 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 May 2024, 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 → (40.15719, -78.98279)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 171 ft |
| Location | 2.5 Mi.e.of Boswell |
| NBI structure number | 000000000031859 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | May 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Pennsylvania department of transportation.
Busiest bridges in Somerset County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Pa Tpk (I-76) over Branch Coxes Crk | 2004 | 32,134 | Good |
| Pa Tpk (I-76) over Crab Run | 1939 | 31,991 | Fair |
| Pa Tpk (I-76) over Three Lick Run | 1939 | 31,200 | Fair |
| Pa Tpk (I-76) over T-782 | 1939 | 31,200 | Fair |
| Pa Tpk (I-76) over Branch of Coxes Creek | 1939 | 30,880 | Fair |
| Pa Tpk (I-76) over Trib to Coxes Creek | 1939 | 30,880 | Fair |
All bridges nearby: Somerset County, PA bridge conditions · every bridge in Somerset County · Pennsylvania bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.