N3920 over Flat Rock Creek
Fair Condition29 years old100 vehicles/day
Location
| State | Oklahoma |
| County | Okmulgee |
| Location | 2.5 W; 0.5 S Preston |
| Carries | N3920 |
| Crosses | Flat Rock Creek |
| Coordinates | 35.70249, -96.03360 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Tee Beam |
| Total Length | 109.9 ft (33.5 m) |
| Max Span | 40.0 ft (12.2 m) |
| Deck Width | 27.9 ft (8.5 m) |
| Deck Area | 284.8 sq m |
| Main Spans | 3 |
| Year Built | 1997 |
Traffic
| Avg Daily Traffic | 100 (2022) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 924 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 251160000000000 |