Trenton Ave over Three Mile Creek
PoorPosted for loadAdair County, Iowa · 074302002 · Structure no. 000000000054670
- Built
- 1900
- 125 years old, rebuilt 1992
- Condition
- Poor
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 76 ft
- 1 main span
- Daily traffic
- 15
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Trenton Ave over Three Mile Creek is a steel stringer/multi-beam or girder carrying Trenton Ave over Three Mile Creek in Adair County, Iowa. It was built in 1900 and reconstructed in 1992, so it is 125 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 15 vehicles a day, projected to reach 15 by 2043. The structure is 76 ft (23.2 m) long and 16 ft wide. If it were closed, the detour would be 3.7 mi (6 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 Trenton Ave over Three Mile Creek built?
It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1992.
What condition is Trenton Ave over Three Mile 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 May 2023.
How much traffic does Trenton Ave over Three Mile Creek carry?
About 15 vehicles per day (2022 count).
How long is Trenton Ave over Three Mile Creek?
The structure is 76 ft (23.2 m) long with a longest span of 41 ft (12.5 m) and a deck 16 ft wide.
Who owns Trenton Ave over Three Mile Creek?
It is owned by the County Highway Agency.