Ill 336 SB over Rock Creek
GoodAdams County, Illinois · 2MI N I172/24 Int · Structure no. 001008200000000
- Built
- 1994
- 31 years old
- Condition
- Good
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 229 ft
- 2 main spans
- Daily traffic
- 5,800
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Ill 336 SB over Rock Creek is a prestressed concrete stringer/multi-beam or girder carrying Ill 336 SB over Rock Creek in Adams County, Illinois. It was built in 1994, so it is 31 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 5,800 vehicles a day, roughly 12% of them trucks, projected to reach 3,156 by 2046. The structure is 229 ft (69.8 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 | 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 Ill 336 SB over Rock Creek built?
It was built in 1994, making it 31 years old in 2025.
What condition is Ill 336 SB over Rock 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 August 2023.
How much traffic does Ill 336 SB over Rock Creek carry?
About 5,800 vehicles per day (2023 count), of which roughly 12% are trucks.
How long is Ill 336 SB over Rock Creek?
The structure is 229 ft (69.8 m) long with a longest span of 113 ft (34.5 m) and a deck 43 ft wide.
Who owns Ill 336 SB over Rock Creek?
It is owned by the State Highway Agency.