Is 55 S over Portage Byu
Fair Condition60 years old10,325 vehicles/day
Location
| State | Missouri |
| County | New Madrid |
| Location | S 20 T 21 N R 13 E |
| Carries | Is 55 S |
| Crosses | Portage Byu |
| Coordinates | 36.44061, -89.67312 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 147.0 ft (44.8 m) |
| Max Span | 56.1 ft (17.1 m) |
| Deck Width | 40.7 ft (12.4 m) |
| Deck Area | 555.5 sq m |
| Main Spans | 3 |
| Year Built | 1966 (reconstructed 2005) |
Traffic
| Avg Daily Traffic | 10,325 (2024) |
| Truck Traffic | 60% |
| Lanes On Bridge | 2 |
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 | 1138 |