Ia 13 over Roberts Creek
GoodClayton County, Iowa · 0.8 Mi. S of S JCT Ia 128 · Structure no. 000000000020641
- Built
- 1979
- 46 years old
- Condition
- Good
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 271 ft
- 3 main spans
- Daily traffic
- 4,900
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
Ia 13 over Roberts Creek is a prestressed concrete stringer/multi-beam or girder carrying Ia 13 over Roberts Creek in Clayton County, Iowa. It was built in 1979, so it is 46 years old, older 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 4,900 vehicles a day, roughly 13% of them trucks, projected to reach 4,900 by 2043. The structure is 271 ft (82.6 m) long and 47 ft wide. If it were closed, the detour would be 14.9 mi (24 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 13 over Roberts Creek built?
It was built in 1979, making it 46 years old in 2025.
What condition is Ia 13 over Roberts Creek 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 Ia 13 over Roberts Creek carry?
About 4,900 vehicles per day (2021 count), of which roughly 13% are trucks.
How long is Ia 13 over Roberts Creek?
The structure is 271 ft (82.6 m) long with a longest span of 92 ft (28 m) and a deck 47 ft wide.
Who owns Ia 13 over Roberts Creek?
It is owned by the State Highway Agency.