US 36 Ml Wbnd over Boulder Creek
PoorBoulder County, Colorado · 28th Street in Boulder · Structure no. D-15-AR
- Built
- 1952
- 73 years old, rebuilt 2005
- Condition
- Poor
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 96 ft
- 3 main spans
- Daily traffic
- 18,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
US 36 Ml Wbnd over Boulder Creek is a steel continuous stringer/multi-beam or girder carrying US 36 Ml Wbnd over Boulder Creek in Boulder County, Colorado. It was built in 1952 and reconstructed in 2005, so it is 73 years old, older than the Colorado average of 42.2 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 18,000 vehicles a day, roughly 3% of them trucks, projected to reach 19,980 by 2040. The structure is 96 ft (29.4 m) long and 34 ft wide. If it were closed, the detour would be 0.6 mi (1 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Wbnd over Boulder Creek built?
It was built in 1952, making it 73 years old in 2025. It was reconstructed in 2005.
What condition is US 36 Ml Wbnd over Boulder Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.
How much traffic does US 36 Ml Wbnd over Boulder Creek carry?
About 18,000 vehicles per day (2020 count), of which roughly 3% are trucks.
How long is US 36 Ml Wbnd over Boulder Creek?
The structure is 96 ft (29.4 m) long with a longest span of 35 ft (10.7 m) and a deck 34 ft wide.
Who owns US 36 Ml Wbnd over Boulder Creek?
It is owned by the State Highway Agency.