278th ST over Drainage
FairClinton County, Iowa · 080E20205 · Structure no. 000000000121551
- Built
- 1996
- 29 years old
- Condition
- Fair
- inspected January 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 21 ft
- 1 main span
- Daily traffic
- 170
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
278th ST over Drainage is a prestressed concrete stringer/multi-beam or girder carrying 278th ST over Drainage in Clinton County, Iowa. It was built in 1996, so it is 29 years old, younger than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 170 vehicles a day, roughly 14% of them trucks, projected to reach 170 by 2044. The structure is 21 ft (6.4 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 278th ST over Drainage built?
It was built in 1996, making it 29 years old in 2025.
What condition is 278th ST over Drainage in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2024.
How much traffic does 278th ST over Drainage carry?
About 170 vehicles per day (2022 count), of which roughly 14% are trucks.
How long is 278th ST over Drainage?
The structure is 21 ft (6.4 m) long with a longest span of 20 ft (6.1 m) and a deck 30 ft wide.
Who owns 278th ST over Drainage?
It is owned by the County Highway Agency.