170th Ave over Sand Creek
PoorPosted for loadDelaware County, Iowa · 088050802 · Structure no. 000000000140870
- Built
- 1953
- 72 years old
- Condition
- Poor
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 130 ft
- 3 main spans
- Daily traffic
- 39
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
170th Ave over Sand Creek is a steel stringer/multi-beam or girder carrying 170th Ave over Sand Creek in Delaware County, Iowa. It was built in 1953, so it is 72 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 other load-capacity restriction.
It carries about 39 vehicles a day, projected to reach 39 by 2043. The structure is 130 ft (39.6 m) long and 22 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 170th Ave over Sand Creek built?
It was built in 1953, making it 72 years old in 2025.
What condition is 170th Ave over Sand 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 April 2023.
How much traffic does 170th Ave over Sand Creek carry?
About 39 vehicles per day (2022 count).
How long is 170th Ave over Sand Creek?
The structure is 130 ft (39.6 m) long with a longest span of 44 ft (13.4 m) and a deck 22 ft wide.
Who owns 170th Ave over Sand Creek?
It is owned by the County Highway Agency.