NB US 61 over Silver Creek
GoodClinton County, Iowa · 0.5 Mi.S.Of Jct.Us 30 · Structure no. 000000000604520
- Built
- 1981
- 44 years old
- Condition
- Good
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 192 ft
- 3 main spans
- Daily traffic
- 7,050
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
NB US 61 over Silver Creek is a prestressed concrete stringer/multi-beam or girder carrying NB US 61 over Silver Creek in Clinton County, Iowa. It was built in 1981, so it is 44 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 7,050 vehicles a day, roughly 17% of them trucks, projected to reach 7,050 by 2043. The structure is 192 ft (58.5 m) long and 43 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was NB US 61 over Silver Creek built?
It was built in 1981, making it 44 years old in 2025.
What condition is NB US 61 over Silver 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 July 2023.
How much traffic does NB US 61 over Silver Creek carry?
About 7,050 vehicles per day (2022 count), of which roughly 17% are trucks.
How long is NB US 61 over Silver Creek?
The structure is 192 ft (58.5 m) long with a longest span of 69 ft (21 m) and a deck 43 ft wide.
Who owns NB US 61 over Silver Creek?
It is owned by the State Highway Agency.