Charles RD over Slough Creek
PoorMcHenry County, Illinois · At Nelson RD · Structure no. 056300600000000
- Built
- 1947
- 78 years old, rebuilt 1984
- Condition
- Poor
- inspected October 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 31 ft
- 1 main span
- Daily traffic
- 6,300
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Charles RD over Slough Creek is a prestressed concrete box beam or girders - multiple carrying Charles RD over Slough Creek in McHenry County, Illinois. It was built in 1947 and reconstructed in 1984, so it is 78 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 6,300 vehicles a day, roughly 9% of them trucks, projected to reach 7,560 by 2046. The structure is 31 ft (9.4 m) long and 40 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 Charles RD over Slough Creek built?
It was built in 1947, making it 78 years old in 2025. It was reconstructed in 1984.
What condition is Charles RD over Slough 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 October 2024.
How much traffic does Charles RD over Slough Creek carry?
About 6,300 vehicles per day (2021 count), of which roughly 9% are trucks.
How long is Charles RD over Slough Creek?
The structure is 31 ft (9.4 m) long with a longest span of 31 ft (9.4 m) and a deck 40 ft wide.
Who owns Charles RD over Slough Creek?
It is owned by the County Highway Agency.