Is 255 S over Mississippi Rvr Up Rr
Fair Condition36 years old30,251 vehicles/day
Location
| State | Missouri |
| County | St. Louis |
| Location | S 6 T 43 N R 7 E |
| Carries | Is 255 S |
| Crosses | Mississippi Rvr Up Rr |
| Coordinates | 38.48717, -90.27753 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Steel |
| Design | Arch - Thru |
| Total Length | 4003.6 ft (1220.3 m) |
| Max Span | 910.1 ft (277.4 m) |
| Deck Width | 54.1 ft (16.5 m) |
| Deck Area | 20135.0 sq m |
| Main Spans | 1 |
| Year Built | 1990 |
Traffic
| Avg Daily Traffic | 30,251 (2024) |
| Truck Traffic | 18% |
| Lanes On Bridge | 3 |
Inspection & Ownership
| Last Inspection | December 2022 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 4007 |