TR 261 over Swan CR
PoorWarren County, Illinois · NW-19-T8NR2W · Structure no. 094451900000000
- Built
- 1966
- 59 years old
- Condition
- Poor
- inspected January 2025
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 31 ft
- 1 main span
- Daily traffic
- 50
- 2016 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR 261 over Swan CR is a prestressed concrete box beam or girders - multiple carrying TR 261 over Swan CR in Warren County, Illinois. It was built in 1966, so it is 59 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 2 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 50 vehicles a day, roughly 26% of them trucks, projected to reach 51 by 2046. The structure is 31 ft (9.5 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 2 Critical | Advanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was TR 261 over Swan CR built?
It was built in 1966, making it 59 years old in 2025.
What condition is TR 261 over Swan CR 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 January 2025.
How much traffic does TR 261 over Swan CR carry?
About 50 vehicles per day (2016 count), of which roughly 26% are trucks.
How long is TR 261 over Swan CR?
The structure is 31 ft (9.5 m) long with a longest span of 29 ft (8.8 m) and a deck 26 ft wide.
Who owns TR 261 over Swan CR?
It is owned by the Town or Township Highway Agency.