FAS 644(CH 55) over Overflow Sangamon R
PoorMacon County, Illinois · 3 MI S of Niantic · Structure no. 058324100000000
- Built
- 1979
- 46 years old
- Condition
- Poor
- inspected February 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 113 ft
- 3 main spans
- Daily traffic
- 575
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
FAS 644(CH 55) over Overflow Sangamon R is a prestressed concrete box beam or girders - multiple carrying FAS 644(CH 55) over Overflow Sangamon R in Macon County, Illinois. It was built in 1979, so it is 46 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 3 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 575 vehicles a day, roughly 21% of them trucks, projected to reach 581 by 2046. The structure is 113 ft (34.3 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 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 |
|---|---|---|
| Deck | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FAS 644(CH 55) over Overflow Sangamon R built?
It was built in 1979, making it 46 years old in 2025.
What condition is FAS 644(CH 55) over Overflow Sangamon R 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 February 2024.
How much traffic does FAS 644(CH 55) over Overflow Sangamon R carry?
About 575 vehicles per day (2020 count), of which roughly 21% are trucks.
How long is FAS 644(CH 55) over Overflow Sangamon R?
The structure is 113 ft (34.3 m) long with a longest span of 37 ft (11.3 m) and a deck 28 ft wide.
Who owns FAS 644(CH 55) over Overflow Sangamon R?
It is owned by the County Highway Agency.