Il 121 over Fork Deer Creek
FairLogan County, Illinois · 1M S Il 10 - Lincoln · Structure no. 054200600000000
- Built
- 1964
- 61 years old
- Condition
- Fair
- inspected January 2025
- Type
- Culvert
- Concrete Continuous
- Length
- 60 ft
- 5 main spans
- Daily traffic
- 3,650
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Il 121 over Fork Deer Creek is a concrete continuous culvert carrying Il 121 over Fork Deer Creek in Logan County, Illinois. It was built in 1964, so it is 61 years old, older than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 3,650 vehicles a day, roughly 16% of them trucks, projected to reach 3,833 by 2046. The structure is 60 ft (18.2 m) long. If it were closed, the detour would be 19.3 mi (31 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Il 121 over Fork Deer Creek built?
It was built in 1964, making it 61 years old in 2025.
What condition is Il 121 over Fork Deer Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2025.
How much traffic does Il 121 over Fork Deer Creek carry?
About 3,650 vehicles per day (2023 count), of which roughly 16% are trucks.
How long is Il 121 over Fork Deer Creek?
The structure is 60 ft (18.2 m) long with a longest span of 12 ft (3.7 m).
Who owns Il 121 over Fork Deer Creek?
It is owned by the State Highway Agency.