Ia 220 over Overflow Iowa River
FairIowa County, Iowa · 2.0 Mi. N of Jct. US 6 · Structure no. 000000000029661
- Built
- 1978
- 47 years old
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 423 ft
- 6 main spans
- Daily traffic
- 1,050
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Ia 220 over Overflow Iowa River is a prestressed concrete stringer/multi-beam or girder carrying Ia 220 over Overflow Iowa River in Iowa County, Iowa. It was built in 1978, so it is 47 years old, older than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 1,050 vehicles a day, roughly 9% of them trucks, projected to reach 1,050 by 2043. The structure is 423 ft (128.9 m) long and 43 ft wide. If it were closed, the detour would be 16.2 mi (26 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 220 over Overflow Iowa River built?
It was built in 1978, making it 47 years old in 2025.
What condition is Ia 220 over Overflow Iowa River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.
How much traffic does Ia 220 over Overflow Iowa River carry?
About 1,050 vehicles per day (2022 count), of which roughly 9% are trucks.
How long is Ia 220 over Overflow Iowa River?
The structure is 423 ft (128.9 m) long with a longest span of 82 ft (25 m) and a deck 43 ft wide.
Who owns Ia 220 over Overflow Iowa River?
It is owned by the State Highway Agency.