Ia 3 over N Fork Maquoketa River
FairDubuque County, Iowa · 1.5 Mi. S Jct. Ia 136 · Structure no. 000000000024040
- Built
- 1968
- 57 years old
- Condition
- Fair
- inspected November 2023
- Type
- Slab
- Concrete Continuous
- Length
- 103 ft
- 3 main spans
- Daily traffic
- 1,720
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Ia 3 over N Fork Maquoketa River is a concrete continuous slab carrying Ia 3 over N Fork Maquoketa River in Dubuque County, Iowa. It was built in 1968, so it is 57 years old, older than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 1,720 vehicles a day, roughly 13% of them trucks, projected to reach 1,720 by 2042. The structure is 103 ft (31.4 m) long and 48 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 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 Ia 3 over N Fork Maquoketa River built?
It was built in 1968, making it 57 years old in 2025.
What condition is Ia 3 over N Fork Maquoketa River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2023.
How much traffic does Ia 3 over N Fork Maquoketa River carry?
About 1,720 vehicles per day (2022 count), of which roughly 13% are trucks.
How long is Ia 3 over N Fork Maquoketa River?
The structure is 103 ft (31.4 m) long with a longest span of 39 ft (11.9 m) and a deck 48 ft wide.
Who owns Ia 3 over N Fork Maquoketa River?
It is owned by the State Highway Agency.