Marion ST-275 a over Maquoketa River
GoodDelaware County, Iowa · 000000000 · Structure no. 000000000006051
- Built
- 2003
- 22 years old
- Condition
- Good
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 243 ft
- 3 main spans
- Daily traffic
- 681
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Marion ST-275 a over Maquoketa River is a prestressed concrete continuous stringer/multi-beam or girder carrying Marion ST-275 a over Maquoketa River in Delaware County, Iowa. It was built in 2003, so it is 22 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 681 vehicles a day, projected to reach 681 by 2044. The structure is 243 ft (74.1 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 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 | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| 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 Marion ST-275 a over Maquoketa River built?
It was built in 2003, making it 22 years old in 2025.
What condition is Marion ST-275 a 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 March 2024.
How much traffic does Marion ST-275 a over Maquoketa River carry?
About 681 vehicles per day (2022 count).
How long is Marion ST-275 a over Maquoketa River?
The structure is 243 ft (74.1 m) long with a longest span of 82 ft (25 m) and a deck 33 ft wide.
Who owns Marion ST-275 a over Maquoketa River?
It is owned by the County Highway Agency.