County Road 103 over Middle St. Vrain Creek
Fair Condition99 years old56 vehicles/day
Location
| State | Colorado |
| County | Boulder |
| Location | 100 Feet S Of State High |
| Carries | County Road 103 |
| Crosses | Middle St. Vrain Creek |
| Coordinates | 40.13617, -105.49208 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Concrete |
| Design | Tee Beam |
| Total Length | 35.1 ft (10.7 m) |
| Max Span | 29.2 ft (8.9 m) |
| Deck Width | 23.3 ft (7.1 m) |
| Deck Area | 76.0 sq m |
| Main Spans | 1 |
| Year Built | 1927 |
Traffic
| Avg Daily Traffic | 56 (2023) |
| Truck Traffic | 20% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 125 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | BC-103-4.0-MSV |