EB US 20 over South Fork Iowa River
GoodHardin County, Iowa · 1.0 Mile E of JCT SR S27 · Structure no. 000000000607440
- Built
- 1999
- 26 years old
- Condition
- Good
- inspected April 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
EB US 20 over South Fork Iowa River is a prestressed concrete stringer/multi-beam or girder carrying EB US 20 over South Fork Iowa River in Hardin County, Iowa. It was built in 1999, so it is 26 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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was EB US 20 over South Fork Iowa River built?
It was built in 1999, making it 26 years old in 2025.
What condition is EB US 20 over South Fork 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 April 2024.
How much traffic does EB US 20 over South Fork Iowa River carry?
About 4,650 vehicles per day (2022 count), of which roughly 30% are trucks.
How long is EB US 20 over South Fork 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 EB US 20 over South Fork Iowa River?
It is owned by the State Highway Agency.