US 45 & Il 21 over Aptakisic Creek
GoodLake County, Illinois · 1.0 M N of Lake-Cook · Structure no. 049019400000000
- Built
- 2008
- 17 years old
- Condition
- Good
- inspected December 2023
- Type
- Slab
- Concrete Continuous
- Length
- 76 ft
- 3 main spans
- Daily traffic
- 33,400
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 45 & Il 21 over Aptakisic Creek is a concrete continuous slab carrying US 45 & Il 21 over Aptakisic Creek in Lake County, Illinois. It was built in 2008, so it is 17 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 33,400 vehicles a day, roughly 4% of them trucks, projected to reach 27,674 by 2046. The structure is 76 ft (23.3 m) long and 83 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| 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 US 45 & Il 21 over Aptakisic Creek built?
It was built in 2008, making it 17 years old in 2025.
What condition is US 45 & Il 21 over Aptakisic 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 December 2023.
How much traffic does US 45 & Il 21 over Aptakisic Creek carry?
About 33,400 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is US 45 & Il 21 over Aptakisic Creek?
The structure is 76 ft (23.3 m) long with a longest span of 28 ft (8.5 m) and a deck 83 ft wide.
Who owns US 45 & Il 21 over Aptakisic Creek?
It is owned by the State Highway Agency.