WB I-235 over East 21st Street
GoodPolk County, Iowa · 0.9 Mile E of JCT US 69 · Structure no. 000000000608760
- Built
- 2001
- 24 years old
- Condition
- Good
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 93 ft
- 1 main span
- Daily traffic
- 35,150
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
WB I-235 over East 21st Street is a prestressed concrete stringer/multi-beam or girder carrying WB I-235 over East 21st Street in Polk County, Iowa. It was built in 2001, so it is 24 years old, younger than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 35,150 vehicles a day, roughly 8% of them trucks, projected to reach 35,150 by 2044. The structure is 93 ft (28.3 m) long and 86 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was WB I-235 over East 21st Street built?
It was built in 2001, making it 24 years old in 2025.
What condition is WB I-235 over East 21st Street in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2024.
How much traffic does WB I-235 over East 21st Street carry?
About 35,150 vehicles per day (2022 count), of which roughly 8% are trucks.
How long is WB I-235 over East 21st Street?
The structure is 93 ft (28.3 m) long with a longest span of 90 ft (27.4 m) and a deck 86 ft wide.
Who owns WB I-235 over East 21st Street?
It is owned by the State Highway Agency.