Ch 18 over Mill CR
GoodRock Island County, Illinois · 7 MI SW Coal Valle · Structure no. 081310000000000
- Built
- 1986
- 39 years old
- Condition
- Good
- inspected November 2022
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 68 ft
- 1 main span
- Daily traffic
- 575
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Ch 18 over Mill CR is a prestressed concrete box beam or girders - multiple carrying Ch 18 over Mill CR in Rock Island County, Illinois. It was built in 1986, so it is 39 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 575 vehicles a day, roughly 18% of them trucks, projected to reach 581 by 2046. The structure is 68 ft (20.7 m) long and 36 ft wide. If it were closed, the detour would be 5 mi (8 km).
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 | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ch 18 over Mill CR built?
It was built in 1986, making it 39 years old in 2025.
What condition is Ch 18 over Mill CR 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 November 2022.
How much traffic does Ch 18 over Mill CR carry?
About 575 vehicles per day (2020 count), of which roughly 18% are trucks.
How long is Ch 18 over Mill CR?
The structure is 68 ft (20.7 m) long with a longest span of 65 ft (19.8 m) and a deck 36 ft wide.
Who owns Ch 18 over Mill CR?
It is owned by the County Highway Agency.