FAS 648(CH 16) over Flat Branch
PoorShelby County, Illinois · 4 MI NW Yantisville · Structure no. 087500700000000
- Built
- 1939
- 86 years old
- Condition
- Poor
- inspected April 2023
- Type
- Culvert
- Concrete
- Length
- 37 ft
- 3 main spans
- Daily traffic
- 350
- 2024 count
- Owner
- County
- County Highway Agency
About this bridge
FAS 648(CH 16) over Flat Branch is a concrete culvert carrying FAS 648(CH 16) over Flat Branch in Shelby County, Illinois. It was built in 1939, so it is 86 years old, older than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 350 vehicles a day, roughly 4% of them trucks, projected to reach 354 by 2046. The structure is 37 ft (11.4 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FAS 648(CH 16) over Flat Branch built?
It was built in 1939, making it 86 years old in 2025.
What condition is FAS 648(CH 16) over Flat Branch in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2023.
How much traffic does FAS 648(CH 16) over Flat Branch carry?
About 350 vehicles per day (2024 count), of which roughly 4% are trucks.
How long is FAS 648(CH 16) over Flat Branch?
The structure is 37 ft (11.4 m) long with a longest span of 11 ft (3.5 m) and a deck 31 ft wide.
Who owns FAS 648(CH 16) over Flat Branch?
It is owned by the County Highway Agency.