56th Avenue over Comanche Creek
PoorPosted for loadAdams County, Colorado · 0.3 MI E of Strasburg RD · Structure no. ADA056-39.3N159
- Built
- 1975
- 50 years old
- Condition
- Poor
- inspected November 2023
- Type
- Girder and Floorbeam System
- Steel
- Length
- 60 ft
- 1 main span
- Daily traffic
- 80
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
56th Avenue over Comanche Creek is a steel girder and floorbeam system carrying 56th Avenue over Comanche Creek in Adams County, Colorado. It was built in 1975, so it is 50 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. Its operating status is: posted for load restriction.
It carries about 80 vehicles a day, roughly 5% of them trucks, projected to reach 104 by 2041. The structure is 60 ft (18.3 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 56th Avenue over Comanche Creek built?
It was built in 1975, making it 50 years old in 2025.
What condition is 56th Avenue over Comanche 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 November 2023.
How much traffic does 56th Avenue over Comanche Creek carry?
About 80 vehicles per day (2021 count), of which roughly 5% are trucks.
How long is 56th Avenue over Comanche Creek?
The structure is 60 ft (18.3 m) long with a longest span of 58 ft (17.7 m) and a deck 30 ft wide.
Who owns 56th Avenue over Comanche Creek?
It is owned by the County Highway Agency.