US 36 FR RD over Boulder Creek SR
PoorBoulder County, Colorado · 28th Street in Boulder · Structure no. D-15-AP
- 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
- 1,264
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 36 FR RD over Boulder Creek SR is a steel continuous stringer/multi-beam or girder carrying US 36 FR RD over Boulder Creek SR 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 1,264 vehicles a day, roughly 3% of them trucks, projected to reach 1,517 by 2042. The structure is 96 ft (29.4 m) long and 46 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 36 FR RD over Boulder Creek SR built?
It was built in 1952, making it 73 years old in 2025. It was reconstructed in 2005.
What condition is US 36 FR RD over Boulder Creek SR 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 FR RD over Boulder Creek SR carry?
About 1,264 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is US 36 FR RD over Boulder Creek SR?
The structure is 96 ft (29.4 m) long with a longest span of 35 ft (10.7 m) and a deck 46 ft wide.
Who owns US 36 FR RD over Boulder Creek SR?
It is owned by the State Highway Agency.