T-463 Etna Furnace over Roaring Run
Poor Condition112 years old44 vehicles/day
Location
| State | Pennsylvania |
| County | Blair |
| Location | 4 Mi.ne.of Williamsburg |
| Carries | T-463 Etna Furnace |
| Crosses | Roaring Run |
| Coordinates | 40.52299, -78.17907 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 3 (Serious) |
| Superstructure | 3 (Serious) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 4 — Foundations need monitoring |
Physical Characteristics
| Material | Concrete |
| Design | Slab |
| Total Length | 25.9 ft (7.9 m) |
| Max Span | 24.9 ft (7.6 m) |
| Deck Width | 17.4 ft (5.3 m) |
| Deck Area | 41.9 sq m |
| Main Spans | 1 |
| Year Built | 1914 |
Traffic
| Avg Daily Traffic | 44 (2023) |
| Lanes On Bridge | 1 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 12 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Structure Number | 000000000005907 |