Ia 13 over Maquoketa River
GoodDelaware County, Iowa · 0.8 Mi. E of W JCT SR D22 · Structure no. 000000000023041
- Built
- 1991
- 34 years old
- Condition
- Good
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 464 ft
- 5 main spans
- Daily traffic
- 7,900
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Ia 13 over Maquoketa River is a prestressed concrete stringer/multi-beam or girder carrying Ia 13 over Maquoketa River in Delaware County, Iowa. It was built in 1991, so it is 34 years old, younger than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 7,900 vehicles a day, roughly 4% of them trucks, projected to reach 7,900 by 2043. The structure is 464 ft (141.4 m) long and 51 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ia 13 over Maquoketa River built?
It was built in 1991, making it 34 years old in 2025.
What condition is Ia 13 over Maquoketa River in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.
How much traffic does Ia 13 over Maquoketa River carry?
About 7,900 vehicles per day (2022 count), of which roughly 4% are trucks.
How long is Ia 13 over Maquoketa River?
The structure is 464 ft (141.4 m) long with a longest span of 97 ft (29.6 m) and a deck 51 ft wide.
Who owns Ia 13 over Maquoketa River?
It is owned by the State Highway Agency.