Ia 37 over East Willow River
GoodMonona County, Iowa · 0.7 Mi. E of SR E54 · Structure no. 000000000036721
- Built
- 1996
- 29 years old
- Condition
- Good
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 301 ft
- 3 main spans
- Daily traffic
- 830
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Ia 37 over East Willow River is a prestressed concrete stringer/multi-beam or girder carrying Ia 37 over East Willow River in Monona County, Iowa. It was built in 1996, so it is 29 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 830 vehicles a day, roughly 19% of them trucks, projected to reach 830 by 2042. The structure is 301 ft (91.7 m) long and 39 ft wide. If it were closed, the detour would be 14.9 mi (24 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ia 37 over East Willow River built?
It was built in 1996, making it 29 years old in 2025.
What condition is Ia 37 over East Willow 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 May 2023.
How much traffic does Ia 37 over East Willow River carry?
About 830 vehicles per day (2022 count), of which roughly 19% are trucks.
How long is Ia 37 over East Willow River?
The structure is 301 ft (91.7 m) long with a longest span of 111 ft (33.8 m) and a deck 39 ft wide.
Who owns Ia 37 over East Willow River?
It is owned by the State Highway Agency.