TR-8 (w Cnty LN RD over Big Rock Creek
FairPosted for loadKane County, Illinois · 3.0 MI NW Big Rock · Structure no. 045304500000000
- Built
- 1957
- 68 years old, rebuilt 1995
- Condition
- Fair
- inspected April 2023
- Type
- Slab
- Concrete Continuous
- Length
- 143 ft
- 4 main spans
- Daily traffic
- 75
- 2010 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR-8 (w Cnty LN RD over Big Rock Creek is a concrete continuous slab carrying TR-8 (w Cnty LN RD over Big Rock Creek in Kane County, Illinois. It was built in 1957 and reconstructed in 1995, so it is 68 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. Its operating status is: posted for load restriction.
It carries about 75 vehicles a day, projected to reach 92 by 2046. The structure is 143 ft (43.6 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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-8 (w Cnty LN RD over Big Rock Creek built?
It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1995.
What condition is TR-8 (w Cnty LN RD over Big Rock 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 April 2023.
How much traffic does TR-8 (w Cnty LN RD over Big Rock Creek carry?
About 75 vehicles per day (2010 count).
How long is TR-8 (w Cnty LN RD over Big Rock Creek?
The structure is 143 ft (43.6 m) long with a longest span of 39 ft (11.8 m) and a deck 28 ft wide.
Who owns TR-8 (w Cnty LN RD over Big Rock Creek?
It is owned by the Town or Township Highway Agency.