Structure 23I01550001 · Dyer County, TN
Carries I155 over Mississippi River, S 11 T 17 N R 13 E.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.
How ratings work7,102 ft end to end, longest span 919 ft: about 20 football fields, or 1.3 miles. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a through truss.
| State | Tennessee |
| County | Dyer |
| Location | S 11 T 17 N R 13 E |
| Carries | I155 |
| Crosses | Mississippi River |
| Coordinates | 36.11833, -89.61500 |
| Material | Steel Continuous |
| Design | Truss - Thru |
| Total Length | 7102.0 ft (2164.7 m) |
| Max Span | 919.0 ft (280.1 m) |
| Deck Width | 81.0 ft (24.7 m) |
| Deck Area | 53468.1 sq m |
| Main Spans | 2 |
| Year Built | 1975 (reconstructed 1987) |
| Avg Daily Traffic | 11,561 (2021) |
| Truck Traffic | 8% |
| Lanes On Bridge | 4 |
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Scour Critical | 3 — Scour critical |
| Structure Number | 23I01550001 |
Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."
A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.