US 20 Off Ramp over US 63
GoodBlack Hawk County, Iowa · At Jct. U.S. 63 · Structure no. 000000000605310
- Built
- 1983
- 42 years old
- Condition
- Good
- inspected January 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 388 ft
- 6 main spans
- Daily traffic
- 980
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US 20 Off Ramp over US 63 is a prestressed concrete stringer/multi-beam or girder carrying US 20 Off Ramp over US 63 in Black Hawk County, Iowa. It was built in 1983, so it is 42 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 980 vehicles a day, roughly 16% of them trucks, projected to reach 980 by 2043. The structure is 388 ft (118.3 m) long and 29 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 20 Off Ramp over US 63 built?
It was built in 1983, making it 42 years old in 2025.
What condition is US 20 Off Ramp over US 63 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 January 2023.
How much traffic does US 20 Off Ramp over US 63 carry?
About 980 vehicles per day (2022 count), of which roughly 16% are trucks.
How long is US 20 Off Ramp over US 63?
The structure is 388 ft (118.3 m) long with a longest span of 81 ft (24.7 m) and a deck 29 ft wide.
Who owns US 20 Off Ramp over US 63?
It is owned by the State Highway Agency.