Structure 81203400000000 · Rock Island County, IL
Carries Il 84 over Barber Creek, S. Edge Port Byron.
A culvert 22 ft across with 2 openings. 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, so those are drawn as typical for a culvert.
| State | Illinois |
| County | Rock Island |
| Location | S. Edge Port Byron |
| Carries | Il 84 |
| Crosses | Barber Creek |
| Coordinates | 41.59398, -90.33546 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 22.3 ft (6.8 m) |
| Max Span | 10.8 ft (3.3 m) |
| Deck Area | 53.7 sq m |
| Main Spans | 2 |
| Year Built | 1956 (reconstructed 1999) |
| Avg Daily Traffic | 8,100 (2023) |
| Truck Traffic | 8% |
| Lanes On Bridge | 2 |
| Last Inspection | December 2023 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 081203400000000 |
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.