WB US 20 over S. Fk Iowa River
GoodHardin County, Iowa · 1.0 Mile East of SR S27 · Structure no. 000000000606205
- Built
- 1990
- 35 years old
- Condition
- Good
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 171 ft
- 3 main spans
- Daily traffic
- 4,650
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
WB US 20 over S. Fk Iowa River is a prestressed concrete stringer/multi-beam or girder carrying WB US 20 over S. Fk Iowa River in Hardin County, Iowa. It was built in 1990, so it is 35 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 4,650 vehicles a day, roughly 30% of them trucks, projected to reach 4,650 by 2044. The structure is 171 ft (52.1 m) long and 43 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was WB US 20 over S. Fk Iowa River built?
It was built in 1990, making it 35 years old in 2025.
What condition is WB US 20 over S. Fk Iowa 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 2024.
How much traffic does WB US 20 over S. Fk Iowa River carry?
About 4,650 vehicles per day (2022 count), of which roughly 30% are trucks.
How long is WB US 20 over S. Fk Iowa River?
The structure is 171 ft (52.1 m) long with a longest span of 82 ft (25 m) and a deck 43 ft wide.
Who owns WB US 20 over S. Fk Iowa River?
It is owned by the State Highway Agency.