Thornhill RD over Perche CR
Good Condition45 years old30 vehicles/day
Location
| State | Missouri |
| County | Boone |
| Location | S 7 T 51 N R 13 W |
| Carries | Thornhill RD |
| Crosses | Perche CR |
| Coordinates | 39.23114, -92.41939 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Tee Beam |
| Total Length | 121.1 ft (36.9 m) |
| Max Span | 40.0 ft (12.2 m) |
| Deck Width | 22.6 ft (6.9 m) |
| Deck Area | 254.6 sq m |
| Main Spans | 3 |
| Year Built | 1981 |
Traffic
| Avg Daily Traffic | 30 (2023) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | December 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 12202 |