Ia 4 over Greenbrier Creek
GoodGreene County, Iowa · 0.5 Mi. S of Jct. SR E63 · Structure no. 000000000025671
- Built
- 1993
- 32 years old
- Condition
- Good
- inspected March 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 98 ft
- 1 main span
- Daily traffic
- 1,620
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Ia 4 over Greenbrier Creek is a prestressed concrete stringer/multi-beam or girder carrying Ia 4 over Greenbrier Creek in Greene County, Iowa. It was built in 1993, so it is 32 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 1,620 vehicles a day, roughly 13% of them trucks, projected to reach 1,620 by 2042. The structure is 98 ft (29.9 m) long and 43 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 7 Good | Some minor problems. |
| 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 4 over Greenbrier Creek built?
It was built in 1993, making it 32 years old in 2025.
What condition is Ia 4 over Greenbrier Creek 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 March 2023.
How much traffic does Ia 4 over Greenbrier Creek carry?
About 1,620 vehicles per day (2022 count), of which roughly 13% are trucks.
How long is Ia 4 over Greenbrier Creek?
The structure is 98 ft (29.9 m) long with a longest span of 95 ft (29 m) and a deck 43 ft wide.
Who owns Ia 4 over Greenbrier Creek?
It is owned by the State Highway Agency.