Harmony Hall T-420 over Letort Spring Run
Fair Condition89 years old5,000 vehicles/day
Location
| State | Pennsylvania |
| County | Cumberland |
| Location | 2 NE Carlisle/letrt Sprgs |
| Carries | Harmony Hall T-420 |
| Crosses | Letort Spring Run |
| Coordinates | 40.21839, -77.15973 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 4 — Foundations need monitoring |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 43.0 ft (13.1 m) |
| Max Span | 40.0 ft (12.2 m) |
| Deck Width | 25.9 ft (7.9 m) |
| Deck Area | 103.5 sq m |
| Main Spans | 1 |
| Year Built | 1937 (reconstructed 1979) |
Traffic
| Avg Daily Traffic | 5,000 (2023) |
| Truck Traffic | 8% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 24 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000014075 |