31st Street Bridge over Alleg.riv. Rrs Locals
Fair Condition98 years old9,812 vehicles/day
Location
| State | Pennsylvania |
| County | Allegheny |
| Location | 31st Street Bridge |
| Carries | 31st Street Bridge |
| Crosses | Alleg.riv. Rrs Locals |
| Coordinates | 40.46461, -79.98006 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel |
| Design | Arch - Deck |
| Total Length | 2729.0 ft (831.8 m) |
| Max Span | 379.9 ft (115.8 m) |
| Deck Width | 43.6 ft (13.3 m) |
| Deck Area | 11062.9 sq m |
| Main Spans | 3 |
| Year Built | 1928 (reconstructed 2013) |
Traffic
| Avg Daily Traffic | 9,812 (2024) |
| Truck Traffic | 11% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 12 |
Inspection & Ownership
| Last Inspection | 623 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Structure Number | 000000000001672 |