US 30 FAP 573 over Somonauk Creek
GoodDeKalb County, Illinois · 1.34 MI E of Il 23 · Structure no. 019004900000000
- Built
- 2016
- 9 years old
- Condition
- Good
- inspected March 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 82 ft
- 1 main span
- Daily traffic
- 3,100
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 30 FAP 573 over Somonauk Creek is a steel stringer/multi-beam or girder carrying US 30 FAP 573 over Somonauk Creek in DeKalb County, Illinois. It was built in 2016, so it is 9 years old, younger than the Illinois average of 45.3 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 3,100 vehicles a day, roughly 14% of them trucks, projected to reach 3,416 by 2046. The structure is 82 ft (24.9 m) long and 43 ft wide. If it were closed, the detour would be 14.3 mi (23 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 | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 30 FAP 573 over Somonauk Creek built?
It was built in 2016, making it 9 years old in 2025.
What condition is US 30 FAP 573 over Somonauk 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 March 2023.
How much traffic does US 30 FAP 573 over Somonauk Creek carry?
About 3,100 vehicles per day (2023 count), of which roughly 14% are trucks.
How long is US 30 FAP 573 over Somonauk Creek?
The structure is 82 ft (24.9 m) long with a longest span of 78 ft (23.9 m) and a deck 43 ft wide.
Who owns US 30 FAP 573 over Somonauk Creek?
It is owned by the State Highway Agency.