FM over N Fork Maquoketa River
PoorPosted for loadJackson County, Iowa · 085E22107 · Structure no. 000000000193380
- Built
- 1952
- 73 years old
- Condition
- Poor
- inspected March 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 320 ft
- 3 main spans
- Daily traffic
- 400
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
FM over N Fork Maquoketa River is a steel continuous stringer/multi-beam or girder carrying FM over N Fork Maquoketa River in Jackson County, Iowa. It was built in 1952, so it is 73 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 400 vehicles a day, roughly 13% of them trucks, projected to reach 400 by 2043. The structure is 320 ft (97.5 m) long and 22 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 FM over N Fork Maquoketa River built?
It was built in 1952, making it 73 years old in 2025.
What condition is FM over N Fork Maquoketa River 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 March 2023.
How much traffic does FM over N Fork Maquoketa River carry?
About 400 vehicles per day (2021 count), of which roughly 13% are trucks.
How long is FM over N Fork Maquoketa River?
The structure is 320 ft (97.5 m) long with a longest span of 125 ft (38.1 m) and a deck 22 ft wide.
Who owns FM over N Fork Maquoketa River?
It is owned by the County Highway Agency.