220th Ave over US 20
GoodDelaware County, Iowa · At Jct. US 20 · Structure no. 000000000602047
- Built
- 1973
- 52 years old
- Condition
- Good
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 268 ft
- 4 main spans
- Daily traffic
- 59
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
220th Ave over US 20 is a prestressed concrete stringer/multi-beam or girder carrying 220th Ave over US 20 in Delaware County, Iowa. It was built in 1973, so it is 52 years old, older 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 59 vehicles a day, projected to reach 59 by 2042. The structure is 268 ft (81.7 m) long and 34 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 220th Ave over US 20 built?
It was built in 1973, making it 52 years old in 2025.
What condition is 220th Ave over US 20 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 2023.
How much traffic does 220th Ave over US 20 carry?
About 59 vehicles per day (2022 count).
How long is 220th Ave over US 20?
The structure is 268 ft (81.7 m) long with a longest span of 87 ft (26.5 m) and a deck 34 ft wide.
Who owns 220th Ave over US 20?
It is owned by the State Highway Agency.