170th Road over Big Rock CR
GoodWorth County, Missouri · S 3 T 65 N R 30 W · Structure no. 28657
- Built
- 2000
- 25 years old
- Condition
- Good
- inspected December 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 60 ft
- 1 main span
- Daily traffic
- 23
- 2024 count
- Owner
- County
- County Highway Agency
About this bridge
170th Road over Big Rock CR is a steel stringer/multi-beam or girder carrying 170th Road over Big Rock CR in Worth County, Missouri. It was built in 2000, so it is 25 years old, younger than the Missouri average of 45.1 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 23 vehicles a day, roughly 10% of them trucks, projected to reach 26 by 2044. The structure is 60 ft (18.3 m) long and 18 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 170th Road over Big Rock CR built?
It was built in 2000, making it 25 years old in 2025.
What condition is 170th Road over Big Rock 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 December 2024.
How much traffic does 170th Road over Big Rock CR carry?
About 23 vehicles per day (2024 count), of which roughly 10% are trucks.
How long is 170th Road over Big Rock CR?
The structure is 60 ft (18.3 m) long with a longest span of 59 ft (18 m) and a deck 18 ft wide.
Who owns 170th Road over Big Rock CR?
It is owned by the County Highway Agency.