Main ST over Drainage
GoodDubuque County, Iowa · T89N.R2W.S6.SE · Structure no. 000000000008626
- Built
- 2011
- 14 years old
- Condition
- Good
- inspected June 2023
- Type
- Slab
- Concrete Continuous
- Length
- 110 ft
- 3 main spans
- Daily traffic
- 400
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Main ST over Drainage is a concrete continuous slab carrying Main ST over Drainage in Dubuque County, Iowa. It was built in 2011, so it is 14 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 400 vehicles a day, roughly 18% of them trucks, projected to reach 400 by 2043. The structure is 110 ft (33.5 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Main ST over Drainage built?
It was built in 2011, making it 14 years old in 2025.
What condition is Main ST over Drainage 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 June 2023.
How much traffic does Main ST over Drainage carry?
About 400 vehicles per day (2022 count), of which roughly 18% are trucks.
How long is Main ST over Drainage?
The structure is 110 ft (33.5 m) long with a longest span of 43 ft (13.1 m) and a deck 33 ft wide.
Who owns Main ST over Drainage?
It is owned by the County Highway Agency.