Ia 1 over Cedar River
GoodLinn County, Iowa · 3.1 Mi. S of Jct. US 30 · Structure no. 000000000033571
- Built
- 1992
- 33 years old
- Condition
- Good
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 1,036 ft
- 11 main spans
- Daily traffic
- 5,600
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Ia 1 over Cedar River is a prestressed concrete stringer/multi-beam or girder carrying Ia 1 over Cedar River in Linn County, Iowa. It was built in 1992, so it is 33 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 5,600 vehicles a day, roughly 8% of them trucks, projected to reach 5,600 by 2044. The structure is 1,036 ft (315.8 m) long and 43 ft wide. If it were closed, the detour would be 5 mi (8 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 Ia 1 over Cedar River built?
It was built in 1992, making it 33 years old in 2025.
What condition is Ia 1 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 November 2024.
How much traffic does Ia 1 over Cedar River carry?
About 5,600 vehicles per day (2022 count), of which roughly 8% are trucks.
How long is Ia 1 over Cedar River?
The structure is 1,036 ft (315.8 m) long with a longest span of 97 ft (29.6 m) and a deck 43 ft wide.
Who owns Ia 1 over Cedar River?
It is owned by the State Highway Agency.