Structure 37J78 · Lac qui Parle County, MN
Carries T 309 over Co Ditch # 4, 0.3 Mi N Of Jct Csah 20.
A culvert 24 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 | Minnesota |
| County | Lac qui Parle |
| Location | 0.3 Mi N Of Jct Csah 20 |
| Carries | T 309 |
| Crosses | Co Ditch # 4 |
| Coordinates | 45.01256, -96.02168 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 24.0 ft (7.3 m) |
| Max Span | 12.1 ft (3.7 m) |
| Deck Area | 62.0 sq m |
| Main Spans | 2 |
| Year Built | 2013 |
| Avg Daily Traffic | 55 (2016) |
| Lanes On Bridge | 2 |
| Last Inspection | August 2022 |
| Inspection Frequency | Every 48 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 37J78 |
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.