Structure 40833008933861 · Bossier County, LA
Carries Chalybeate RD over Martin Creek Trib, 4.0 Mi N Of La 157.
A culvert 22 ft across with 3 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 | Louisiana |
| County | Bossier |
| Location | 4.0 Mi N Of La 157 |
| Carries | Chalybeate RD |
| Crosses | Martin Creek Trib |
| Coordinates | 33.01362, -93.64281 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 22.0 ft (6.7 m) |
| Max Span | 7.9 ft (2.4 m) |
| Deck Width | 64.0 ft (19.5 m) |
| Deck Area | 130.7 sq m |
| Main Spans | 3 |
| Year Built | 1998 |
| Avg Daily Traffic | 100 (2020) |
| Lanes On Bridge | 1 |
| Last Inspection | December 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Historical significance is not determined |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 040833008933861 |
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.