S Iris ST over US 218
GoodHenry County, Iowa · 0.4 Mi. S of S Jct. US 34 · Structure no. 000000000608000
- Built
- 2001
- 24 years old
- Condition
- Good
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 279 ft
- 2 main spans
- Daily traffic
- 830
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
S Iris ST over US 218 is a prestressed concrete stringer/multi-beam or girder carrying S Iris ST over US 218 in Henry County, Iowa. It was built in 2001, so it is 24 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 830 vehicles a day, roughly 1% of them trucks, projected to reach 830 by 2043. The structure is 279 ft (85 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S Iris ST over US 218 built?
It was built in 2001, making it 24 years old in 2025.
What condition is S Iris ST over US 218 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 S Iris ST over US 218 carry?
About 830 vehicles per day (2022 count), of which roughly 1% are trucks.
How long is S Iris ST over US 218?
The structure is 279 ft (85 m) long with a longest span of 140 ft (42.7 m) and a deck 43 ft wide.
Who owns S Iris ST over US 218?
It is owned by the State Highway Agency.