TR 170 over Mud Creek
FairIroquois County, Illinois · 2.3 MI N of Ch 10 · Structure no. 038017700000000
- Built
- 1976
- 49 years old
- Condition
- Fair
- inspected August 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 166 ft
- 4 main spans
- Daily traffic
- 100
- 2022 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR 170 over Mud Creek is a prestressed concrete box beam or girders - multiple carrying TR 170 over Mud Creek in Iroquois County, Illinois. It was built in 1976, so it is 49 years old, older than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 100 vehicles a day, roughly 14% of them trucks, projected to reach 202 by 2046. The structure is 166 ft (50.6 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 5 or 6. Minor deterioration is present but the structure is sound.
| 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 | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was TR 170 over Mud Creek built?
It was built in 1976, making it 49 years old in 2025.
What condition is TR 170 over Mud Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.
How much traffic does TR 170 over Mud Creek carry?
About 100 vehicles per day (2022 count), of which roughly 14% are trucks.
How long is TR 170 over Mud Creek?
The structure is 166 ft (50.6 m) long with a longest span of 42 ft (12.8 m) and a deck 30 ft wide.
Who owns TR 170 over Mud Creek?
It is owned by the Town or Township Highway Agency.