W 18th ST over Cedar River
GoodBlack Hawk County, Iowa · City Bridge No. 20 · Structure no. 000000000012111
- Built
- 2003
- 22 years old
- Condition
- Good
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 658 ft
- 5 main spans
- Daily traffic
- 10,921
- 2022 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
W 18th ST over Cedar River is a prestressed concrete stringer/multi-beam or girder carrying W 18th ST over Cedar River in Black Hawk County, Iowa. It was built in 2003, so it is 22 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 10,921 vehicles a day, projected to reach 10,921 by 2043. The structure is 658 ft (200.6 m) long and 46 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was W 18th ST over Cedar River built?
It was built in 2003, making it 22 years old in 2025.
What condition is W 18th ST over Cedar River 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 2023.
How much traffic does W 18th ST over Cedar River carry?
About 10,921 vehicles per day (2022 count).
How long is W 18th ST over Cedar River?
The structure is 658 ft (200.6 m) long with a longest span of 132 ft (40.2 m) and a deck 46 ft wide.
Who owns W 18th ST over Cedar River?
It is owned by the City or Municipal Highway Agency.