SB I-35 WB I-80 over Drainage Ditch
FairPolk County, Iowa · 0.8 Mi. W of Jct. Ia 415 · Structure no. 000000000041540
- Built
- 1958
- 67 years old, rebuilt 1990
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 112 ft
- 3 main spans
- Daily traffic
- 48,000
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
SB I-35 WB I-80 over Drainage Ditch is a prestressed concrete stringer/multi-beam or girder carrying SB I-35 WB I-80 over Drainage Ditch in Polk County, Iowa. It was built in 1958 and reconstructed in 1990, so it is 67 years old, older 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 48,000 vehicles a day, roughly 20% of them trucks, projected to reach 48,000 by 2044. The structure is 112 ft (34.1 m) long and 67 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SB I-35 WB I-80 over Drainage Ditch built?
It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1990.
What condition is SB I-35 WB I-80 over Drainage Ditch 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 September 2024.
How much traffic does SB I-35 WB I-80 over Drainage Ditch carry?
About 48,000 vehicles per day (2022 count), of which roughly 20% are trucks.
How long is SB I-35 WB I-80 over Drainage Ditch?
The structure is 112 ft (34.1 m) long with a longest span of 40 ft (12.2 m) and a deck 67 ft wide.
Who owns SB I-35 WB I-80 over Drainage Ditch?
It is owned by the State Highway Agency.