Railroad ST over Little Black Slough
GoodJohnson County, Illinois · South Edge Cypress · Structure no. 044312800000000
- Built
- 2007
- 18 years old
- Condition
- Good
- inspected May 2022
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 31 ft
- 1 main span
- Daily traffic
- 50
- 2021 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
Railroad ST over Little Black Slough is a prestressed concrete box beam or girders - multiple carrying Railroad ST over Little Black Slough in Johnson County, Illinois. It was built in 2007, so it is 18 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 53 by 2046. The structure is 31 ft (9.6 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 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 | 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 Railroad ST over Little Black Slough built?
It was built in 2007, making it 18 years old in 2025.
What condition is Railroad ST over Little Black Slough 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 May 2022.
How much traffic does Railroad ST over Little Black Slough carry?
About 50 vehicles per day (2021 count), of which roughly 10% are trucks.
How long is Railroad ST over Little Black Slough?
The structure is 31 ft (9.6 m) long with a longest span of 29 ft (8.8 m) and a deck 24 ft wide.
Who owns Railroad ST over Little Black Slough?
It is owned by the Town or Township Highway Agency.