US 20 Ramps over Drainage Ditch
GoodDubuque County, Iowa · JCT US 20 & SR Y17 · Structure no. 000000000605865
- Built
- 1988
- 37 years old
- Condition
- Good
- inspected November 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 22 ft
- 2 main spans
- Daily traffic
- 1,010
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US 20 Ramps over Drainage Ditch is a concrete continuous culvert carrying US 20 Ramps over Drainage Ditch in Dubuque County, Iowa. It was built in 1988, so it is 37 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 1,010 vehicles a day, roughly 3% of them trucks, projected to reach 1,010 by 2043. The structure is 22 ft (6.7 m) long. 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 20 Ramps over Drainage Ditch built?
It was built in 1988, making it 37 years old in 2025.
What condition is US 20 Ramps over Drainage Ditch 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 November 2023.
How much traffic does US 20 Ramps over Drainage Ditch carry?
About 1,010 vehicles per day (2022 count), of which roughly 3% are trucks.
How long is US 20 Ramps over Drainage Ditch?
The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).
Who owns US 20 Ramps over Drainage Ditch?
It is owned by the State Highway Agency.