R 57 over Middle River
GoodWarren County, Iowa · 076240804 · Structure no. 000000000334521
- Built
- 2011
- 14 years old
- Condition
- Good
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 306 ft
- 3 main spans
- Daily traffic
- 1,136
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
R 57 over Middle River is a prestressed concrete stringer/multi-beam or girder carrying R 57 over Middle River in Warren County, Iowa. It was built in 2011, so it is 14 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 1,136 vehicles a day, roughly 13% of them trucks, projected to reach 1,136 by 2044. The structure is 306 ft (93.3 m) long and 33 ft wide. If it were closed, the detour would be 8.7 mi (14 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was R 57 over Middle River built?
It was built in 2011, making it 14 years old in 2025.
What condition is R 57 over Middle 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 October 2024.
How much traffic does R 57 over Middle River carry?
About 1,136 vehicles per day (2022 count), of which roughly 13% are trucks.
How long is R 57 over Middle River?
The structure is 306 ft (93.3 m) long with a longest span of 112 ft (34.1 m) and a deck 33 ft wide.
Who owns R 57 over Middle River?
It is owned by the County Highway Agency.