WB I-80 over Silver Creek
FairPottawattamie County, Iowa · 5.1 Mi. W of Jct. US 59 · Structure no. 000000000045510
- Built
- 1966
- 59 years old
- Condition
- Fair
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 179 ft
- 3 main spans
- Daily traffic
- 12,850
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
WB I-80 over Silver Creek is a prestressed concrete stringer/multi-beam or girder carrying WB I-80 over Silver Creek in Pottawattamie County, Iowa. It was built in 1966, so it is 59 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 12,850 vehicles a day, roughly 39% of them trucks, projected to reach 12,850 by 2043. The structure is 179 ft (54.6 m) long and 42 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was WB I-80 over Silver Creek built?
It was built in 1966, making it 59 years old in 2025.
What condition is WB I-80 over Silver Creek 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 May 2023.
How much traffic does WB I-80 over Silver Creek carry?
About 12,850 vehicles per day (2022 count), of which roughly 39% are trucks.
How long is WB I-80 over Silver Creek?
The structure is 179 ft (54.6 m) long with a longest span of 65 ft (19.8 m) and a deck 42 ft wide.
Who owns WB I-80 over Silver Creek?
It is owned by the State Highway Agency.