State Street over Alton/South RR
GoodSt. Clair County, Illinois · .15 E of 40th ST · Structure no. 082601000000000
- Built
- 1999
- 26 years old
- Condition
- Good
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 165 ft
- 3 main spans
- Daily traffic
- 5,400
- 2023 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
State Street over Alton/South RR is a steel continuous stringer/multi-beam or girder carrying State Street over Alton/South RR in St. Clair County, Illinois. It was built in 1999, so it is 26 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 5,400 vehicles a day, roughly 8% of them trucks, projected to reach 5,555 by 2046. The structure is 165 ft (50.2 m) long and 67 ft wide.
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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Street over Alton/South RR built?
It was built in 1999, making it 26 years old in 2025.
What condition is State Street over Alton/South RR 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 October 2024.
How much traffic does State Street over Alton/South RR carry?
About 5,400 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is State Street over Alton/South RR?
The structure is 165 ft (50.2 m) long with a longest span of 62 ft (19 m) and a deck 67 ft wide.
Who owns State Street over Alton/South RR?
It is owned by the City or Municipal Highway Agency.