US 20 EB over Boyer River
GoodSac County, Iowa · 1.9 Miles West of US 71 · Structure no. 000000000046552
- Built
- 2018
- 7 years old
- Condition
- Good
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 307 ft
- 3 main spans
- Daily traffic
- 2,425
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US 20 EB over Boyer River is a prestressed concrete stringer/multi-beam or girder carrying US 20 EB over Boyer River in Sac County, Iowa. It was built in 2018, so it is 7 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 2,425 vehicles a day, roughly 37% of them trucks, projected to reach 2,425 by 2042. The structure is 307 ft (93.6 m) long and 44 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 | 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 US 20 EB over Boyer River built?
It was built in 2018, making it 7 years old in 2025.
What condition is US 20 EB over Boyer 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 September 2023.
How much traffic does US 20 EB over Boyer River carry?
About 2,425 vehicles per day (2022 count), of which roughly 37% are trucks.
How long is US 20 EB over Boyer River?
The structure is 307 ft (93.6 m) long with a longest span of 107 ft (32.6 m) and a deck 44 ft wide.
Who owns US 20 EB over Boyer River?
It is owned by the State Highway Agency.