Is 170 W over Is 270 Rp Dunn RD To Is
Fair Condition24 years old27,257 vehicles/day
Location
| State | Missouri |
| County | St. Louis |
| Location | S 939 T 47 N R 6 E |
| Carries | Is 170 W |
| Crosses | Is 270 Rp Dunn RD To Is |
| Coordinates | 38.77546, -90.34074 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 1558.1 ft (474.9 m) |
| Max Span | 183.4 ft (55.9 m) |
| Deck Width | 30.5 ft (9.3 m) |
| Deck Area | 4416.6 sq m |
| Main Spans | 4 |
| Year Built | 2002 |
Traffic
| Avg Daily Traffic | 27,257 (2024) |
| Truck Traffic | 18% |
| Lanes On Bridge | 1 |
| Lanes Under Bridge | 12 |
Inspection & Ownership
| Last Inspection | December 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 29143 |