TR 166 over Mauvaise Terre CR
PoorMorgan County, Illinois · NE Cl Jacksonville · Structure no. 069323000000000
- Built
- 1996
- 29 years old
- Condition
- Poor
- inspected November 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 286 ft
- 4 main spans
- Daily traffic
- 250
- 2024 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR 166 over Mauvaise Terre CR is a prestressed concrete box beam or girders - multiple carrying TR 166 over Mauvaise Terre CR in Morgan County, Illinois. It was built in 1996, so it is 29 years old, younger 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 250 vehicles a day, roughly 4% of them trucks, projected to reach 177 by 2046. The structure is 286 ft (87.2 m) long and 30 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was TR 166 over Mauvaise Terre CR built?
It was built in 1996, making it 29 years old in 2025.
What condition is TR 166 over Mauvaise Terre 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 November 2023.
How much traffic does TR 166 over Mauvaise Terre CR carry?
About 250 vehicles per day (2024 count), of which roughly 4% are trucks.
How long is TR 166 over Mauvaise Terre CR?
The structure is 286 ft (87.2 m) long with a longest span of 72 ft (21.9 m) and a deck 30 ft wide.
Who owns TR 166 over Mauvaise Terre CR?
It is owned by the Town or Township Highway Agency.