Keystone Road over Nippersink CR Trib
GoodMcHenry County, Illinois · 0.9 MI S Tryon Grove · Structure no. 056303200000000
- Built
- 1990
- 35 years old
- Condition
- Good
- inspected October 2024
- Type
- Culvert
- Steel
- Length
- 25 ft
- 3 main spans
- Daily traffic
- 1,300
- 2021 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
Keystone Road over Nippersink CR Trib is a steel culvert carrying Keystone Road over Nippersink CR Trib in McHenry County, Illinois. It was built in 1990, so it is 35 years old, younger than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 1,300 vehicles a day, roughly 6% of them trucks, projected to reach 1,560 by 2046. The structure is 25 ft (7.5 m) long.
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Keystone Road over Nippersink CR Trib built?
It was built in 1990, making it 35 years old in 2025.
What condition is Keystone Road over Nippersink CR Trib in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.
How much traffic does Keystone Road over Nippersink CR Trib carry?
About 1,300 vehicles per day (2021 count), of which roughly 6% are trucks.
How long is Keystone Road over Nippersink CR Trib?
The structure is 25 ft (7.5 m) long with a longest span of 7 ft (2.1 m).
Who owns Keystone Road over Nippersink CR Trib?
It is owned by the Town or Township Highway Agency.