Structure 64990100000000 · Massac County, IL
Carries US 45 over Ohio River, Brookport.
Set by its lowest-rated component: Deck and Superstructure at 5 of 9.
How ratings work5,387 ft end to end, longest span 711 ft: about 15 football fields, or 1.0 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 | Illinois |
| County | Massac |
| Location | Brookport |
| Carries | US 45 |
| Crosses | Ohio River |
| Coordinates | 37.12245, -88.62686 |
| Material | Steel |
| Design | Truss - Thru |
| Total Length | 5387.1 ft (1,642 m) |
| Max Span | 711.0 ft (216.7 m) |
| Deck Width | 20.3 ft (6.2 m) |
| Deck Area | 10180.4 sq m |
| Main Spans | 10 |
| Year Built | 1929 |
| Avg Daily Traffic | 4,450 (2023) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
| Last Inspection | April 2024 |
| Inspection Frequency | Every 24 months |
| Owner | Private |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 5 — Stable for scour |
| Structure Number | 064990100000000 |
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.