120th Street over Shanghai Creek
FairPosted for loadAdams County, Iowa · 073321503 · Structure no. 000000000060391
- Built
- 1980
- 45 years old
- Condition
- Fair
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 48 ft
- 1 main span
- Daily traffic
- 11
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
120th Street over Shanghai Creek is a steel stringer/multi-beam or girder carrying 120th Street over Shanghai Creek in Adams County, Iowa. It was built in 1980, so it is 45 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. Its operating status is: posted for load restriction.
It carries about 11 vehicles a day, projected to reach 11 by 2044. The structure is 48 ft (14.6 m) long and 16 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 120th Street over Shanghai Creek built?
It was built in 1980, making it 45 years old in 2025.
What condition is 120th Street over Shanghai 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 February 2024.
How much traffic does 120th Street over Shanghai Creek carry?
About 11 vehicles per day (2022 count).
How long is 120th Street over Shanghai Creek?
The structure is 48 ft (14.6 m) long with a longest span of 46 ft (14 m) and a deck 16 ft wide.
Who owns 120th Street over Shanghai Creek?
It is owned by the County Highway Agency.