Ch 21 over Curtis Creek
FairAdams County, Illinois · S City Limits Quincy · Structure no. 001301200000000
- Built
- 1954
- 71 years old
- Condition
- Fair
- inspected May 2024
- Type
- Slab
- Concrete
- Length
- 92 ft
- 3 main spans
- Daily traffic
- 4,750
- 2024 count
- Owner
- County
- County Highway Agency
About this bridge
Ch 21 over Curtis Creek is a concrete slab carrying Ch 21 over Curtis Creek in Adams County, Illinois. It was built in 1954, so it is 71 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 4,750 vehicles a day, roughly 4% of them trucks, projected to reach 5,000 by 2046. The structure is 92 ft (28 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 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 |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ch 21 over Curtis Creek built?
It was built in 1954, making it 71 years old in 2025.
What condition is Ch 21 over Curtis 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 May 2024.
How much traffic does Ch 21 over Curtis Creek carry?
About 4,750 vehicles per day (2024 count), of which roughly 4% are trucks.
How long is Ch 21 over Curtis Creek?
The structure is 92 ft (28 m) long with a longest span of 34 ft (10.4 m) and a deck 30 ft wide.
Who owns Ch 21 over Curtis Creek?
It is owned by the County Highway Agency.