US 36 Ml over South Boulder Creek
GoodBoulder County, Colorado · 2.4 MI E of JCT SH 93 · Structure no. E-16-FD
- Built
- 1951
- 74 years old, rebuilt 2015
- Condition
- Good
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 115 ft
- 3 main spans
- Daily traffic
- 77,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
US 36 Ml over South Boulder Creek is a steel continuous stringer/multi-beam or girder carrying US 36 Ml over South Boulder Creek in Boulder County, Colorado. It was built in 1951 and reconstructed in 2015, so it is 74 years old, older than the Colorado average of 42.2 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 77,000 vehicles a day, roughly 2% of them trucks, projected to reach 89,320 by 2040. The structure is 115 ft (35 m) long and 123 ft wide. If it were closed, the detour would be 3.1 mi (5 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 36 Ml over South Boulder Creek built?
It was built in 1951, making it 74 years old in 2025. It was reconstructed in 2015.
What condition is US 36 Ml over South Boulder Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.
How much traffic does US 36 Ml over South Boulder Creek carry?
About 77,000 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is US 36 Ml over South Boulder Creek?
The structure is 115 ft (35 m) long with a longest span of 50 ft (15.2 m) and a deck 123 ft wide.
Who owns US 36 Ml over South Boulder Creek?
It is owned by the State Highway Agency.