Il 31 NB Exit Ram over Crystal Creek
GoodMcHenry County, Illinois · 0.1 M S Algonquin RD · Structure no. 056007900000000
- Built
- 2013
- 12 years old
- Condition
- Good
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 138 ft
- 1 main span
- Daily traffic
- 1,200
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
Il 31 NB Exit Ram over Crystal Creek is a steel stringer/multi-beam or girder carrying Il 31 NB Exit Ram over Crystal Creek in McHenry County, Illinois. It was built in 2013, so it is 12 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 1,200 vehicles a day, roughly 12% of them trucks, projected to reach 1,440 by 2046. The structure is 138 ft (42.2 m) long and 34 ft wide.
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 |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Il 31 NB Exit Ram over Crystal Creek built?
It was built in 2013, making it 12 years old in 2025.
What condition is Il 31 NB Exit Ram over Crystal Creek 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 September 2023.
How much traffic does Il 31 NB Exit Ram over Crystal Creek carry?
About 1,200 vehicles per day (2021 count), of which roughly 12% are trucks.
How long is Il 31 NB Exit Ram over Crystal Creek?
The structure is 138 ft (42.2 m) long with a longest span of 132 ft (40.1 m) and a deck 34 ft wide.
Who owns Il 31 NB Exit Ram over Crystal Creek?
It is owned by the State Highway Agency.