Willow ST over Drainage
PoorPosted for loadSac County, Iowa · 087383405 · Structure no. 000000000008910
- Built
- 1900
- 125 years old, rebuilt 1999
- Condition
- Poor
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 21 ft
- 1 main span
- Daily traffic
- 232
- 2022 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Willow ST over Drainage is a steel stringer/multi-beam or girder carrying Willow ST over Drainage in Sac County, Iowa. It was built in 1900 and reconstructed in 1999, so it is 125 years old, older than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.
It carries about 232 vehicles a day, projected to reach 232 by 2043. The structure is 21 ft (6.4 m) long and 20 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| 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 Willow ST over Drainage built?
It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1999.
What condition is Willow ST over Drainage in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.
How much traffic does Willow ST over Drainage carry?
About 232 vehicles per day (2022 count).
How long is Willow 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 20 ft wide.
Who owns Willow ST over Drainage?
It is owned by the City or Municipal Highway Agency.