Ia 188 over Shell Rock River
GoodButler County, Iowa · 1.5 Mi. N of Jct. Ia 3 · Structure no. 000000000016721
- Built
- 1992
- 33 years old
- Condition
- Good
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 484 ft
- 5 main spans
- Daily traffic
- 2,010
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Ia 188 over Shell Rock River is a prestressed concrete stringer/multi-beam or girder carrying Ia 188 over Shell Rock River in Butler County, Iowa. It was built in 1992, so it is 33 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 2,010 vehicles a day, roughly 10% of them trucks, projected to reach 2,010 by 2044. The structure is 484 ft (147.5 m) long and 39 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ia 188 over Shell Rock River built?
It was built in 1992, making it 33 years old in 2025.
What condition is Ia 188 over Shell Rock 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 August 2024.
How much traffic does Ia 188 over Shell Rock River carry?
About 2,010 vehicles per day (2022 count), of which roughly 10% are trucks.
How long is Ia 188 over Shell Rock River?
The structure is 484 ft (147.5 m) long with a longest span of 97 ft (29.6 m) and a deck 39 ft wide.
Who owns Ia 188 over Shell Rock River?
It is owned by the State Highway Agency.