Ramp J (sb) over Ia 57
GoodBlack Hawk County, Iowa · At Jct. of Ia 57 · Structure no. 000000000601555
- Built
- 1995
- 30 years old
- Condition
- Good
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 298 ft
- 4 main spans
- Daily traffic
- 3,320
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Ramp J (sb) over Ia 57 is a prestressed concrete stringer/multi-beam or girder carrying Ramp J (sb) over Ia 57 in Black Hawk County, Iowa. It was built in 1995, so it is 30 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 3,320 vehicles a day, roughly 7% of them trucks, projected to reach 3,320 by 2044. The structure is 298 ft (90.8 m) long and 43 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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ramp J (sb) over Ia 57 built?
It was built in 1995, making it 30 years old in 2025.
What condition is Ramp J (sb) over Ia 57 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 May 2024.
How much traffic does Ramp J (sb) over Ia 57 carry?
About 3,320 vehicles per day (2022 count), of which roughly 7% are trucks.
How long is Ramp J (sb) over Ia 57?
The structure is 298 ft (90.8 m) long with a longest span of 101 ft (30.8 m) and a deck 43 ft wide.
Who owns Ramp J (sb) over Ia 57?
It is owned by the State Highway Agency.