TR 46 over Riley Creek
PoorHancock County, Illinois · 2.0 SW Nauvoo · Structure no. 034550400000000
- Built
- 1971
- 54 years old
- Condition
- Poor
- inspected February 2025
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 42 ft
- 1 main span
- Daily traffic
- 50
- 2023 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR 46 over Riley Creek is a prestressed concrete box beam or girders - multiple carrying TR 46 over Riley Creek in Hancock County, Illinois. It was built in 1971, so it is 54 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 50 vehicles a day, roughly 2% of them trucks, projected to reach 152 by 2046. The structure is 42 ft (12.8 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was TR 46 over Riley Creek built?
It was built in 1971, making it 54 years old in 2025.
What condition is TR 46 over Riley Creek 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 2025.
How much traffic does TR 46 over Riley Creek carry?
About 50 vehicles per day (2023 count), of which roughly 2% are trucks.
How long is TR 46 over Riley Creek?
The structure is 42 ft (12.8 m) long with a longest span of 42 ft (12.8 m) and a deck 27 ft wide.
Who owns TR 46 over Riley Creek?
It is owned by the Town or Township Highway Agency.