F63 310th RD over Middle River
GoodGuthrie County, Iowa · 078321701 · Structure no. 000000000167111
- Built
- 2021
- 4 years old
- Condition
- Good
- inspected November 2023
- Type
- Slab
- Concrete Continuous
- Length
- 153 ft
- 3 main spans
- Daily traffic
- 150
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
F63 310th RD over Middle River is a concrete continuous slab carrying F63 310th RD over Middle River in Guthrie County, Iowa. It was built in 2021, so it is 4 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 150 vehicles a day, roughly 15% of them trucks, projected to reach 150 by 2043. The structure is 153 ft (46.6 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 | 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 F63 310th RD over Middle River built?
It was built in 2021, making it 4 years old in 2025.
What condition is F63 310th RD 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 November 2023.
How much traffic does F63 310th RD over Middle River carry?
About 150 vehicles per day (2022 count), of which roughly 15% are trucks.
How long is F63 310th RD over Middle River?
The structure is 153 ft (46.6 m) long with a longest span of 59 ft (18 m) and a deck 33 ft wide.
Who owns F63 310th RD over Middle River?
It is owned by the County Highway Agency.