County Road 129 over Mad Creek
Fair Condition45 years old2,762 vehicles/day
Location
| State | Colorado |
| County | Routt |
| Location | 5.4 Mi N Of US HWY 40 |
| Carries | County Road 129 |
| Crosses | Mad Creek |
| Coordinates | 40.56550, -106.88912 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 85.0 ft (25.9 m) |
| Max Span | 79.1 ft (24.1 m) |
| Deck Width | 28.2 ft (8.6 m) |
| Deck Area | 222.7 sq m |
| Main Spans | 1 |
| Year Built | 1981 |
Traffic
| Avg Daily Traffic | 2,762 (2023) |
| Truck Traffic | 35% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 107012905.40912 |