FAP 320 (il 121) over Dunn Branch
GoodMoultrie County, Illinois · 3.0 MI E of Bethany · Structure no. 070200500000000
- Built
- 1969
- 56 years old
- Condition
- Good
- inspected December 2024
- Type
- Culvert
- Concrete
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 4,600
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
FAP 320 (il 121) over Dunn Branch is a concrete culvert carrying FAP 320 (il 121) over Dunn Branch in Moultrie County, Illinois. It was built in 1969, so it is 56 years old, older 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 4,600 vehicles a day, roughly 9% of them trucks, projected to reach 5,460 by 2046. The structure is 21 ft (6.4 m) long and 155 ft wide. If it were closed, the detour would be 1.9 mi (3 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 |
|---|---|---|
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FAP 320 (il 121) over Dunn Branch built?
It was built in 1969, making it 56 years old in 2025.
What condition is FAP 320 (il 121) over Dunn Branch 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 December 2024.
How much traffic does FAP 320 (il 121) over Dunn Branch carry?
About 4,600 vehicles per day (2023 count), of which roughly 9% are trucks.
How long is FAP 320 (il 121) over Dunn Branch?
The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3.1 m) and a deck 155 ft wide.
Who owns FAP 320 (il 121) over Dunn Branch?
It is owned by the State Highway Agency.