Birch Avenue over Sin Creek
PoorPosted for loadAdams County, Iowa · 073351706 · Structure no. 000000000061000
- Built
- 1964
- 61 years old
- Condition
- Poor
- inspected February 2024
- Type
- Truss - Thru
- Steel
- Length
- 40 ft
- 1 main span
- Daily traffic
- 5
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Birch Avenue over Sin Creek is a steel truss - thru carrying Birch Avenue over Sin Creek in Adams County, Iowa. It was built in 1964, so it is 61 years old, older than the Iowa average of 45.5 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 5 vehicles a day, projected to reach 5 by 2044. The structure is 40 ft (12.2 m) long and 16 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Birch Avenue over Sin Creek built?
It was built in 1964, making it 61 years old in 2025.
What condition is Birch Avenue over Sin 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 February 2024.
How much traffic does Birch Avenue over Sin Creek carry?
About 5 vehicles per day (2022 count).
How long is Birch Avenue over Sin Creek?
The structure is 40 ft (12.2 m) long with a longest span of 39 ft (11.9 m) and a deck 16 ft wide.
Who owns Birch Avenue over Sin Creek?
It is owned by the County Highway Agency.