SH 257 Ml over Big Thompson River
Fair Condition65 years old8,500 vehicles/day
Location
| State | Colorado |
| County | Weld |
| Location | 0.8 Mi No Of Jct SH 60 |
| Carries | SH 257 Ml |
| Crosses | Big Thompson River |
| Coordinates | 40.34364, -104.86781 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete |
| Design | Tee Beam |
| Total Length | 166.0 ft (50.6 m) |
| Max Span | 54.1 ft (16.5 m) |
| Deck Width | 32.2 ft (9.8 m) |
| Deck Area | 495.9 sq m |
| Main Spans | 3 |
| Year Built | 1961 |
Traffic
| Avg Daily Traffic | 8,500 (2020) |
| Truck Traffic | 9% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 923 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | C-17-Z |