N Rock Hill RD over Shady Grove CR
GoodSt. Louis County, Missouri · S 1953 T 45 N R 6 E · Structure no. 35385
- Built
- 2017
- 8 years old
- Condition
- Good
- inspected January 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 39 ft
- 1 main span
- Daily traffic
- 5,574
- 2023 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
N Rock Hill RD over Shady Grove CR is a prestressed concrete box beam or girders - multiple carrying N Rock Hill RD over Shady Grove CR in St. Louis County, Missouri. It was built in 2017, so it is 8 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 5,574 vehicles a day, roughly 15% of them trucks, projected to reach 7,525 by 2043. The structure is 39 ft (12 m) long and 48 ft wide. If it were closed, the detour would be 0.6 mi (1 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 N Rock Hill RD over Shady Grove CR built?
It was built in 2017, making it 8 years old in 2025.
What condition is N Rock Hill RD over Shady Grove 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 January 2024.
How much traffic does N Rock Hill RD over Shady Grove CR carry?
About 5,574 vehicles per day (2023 count), of which roughly 15% are trucks.
How long is N Rock Hill RD over Shady Grove CR?
The structure is 39 ft (12 m) long with a longest span of 37 ft (11.3 m) and a deck 48 ft wide.
Who owns N Rock Hill RD over Shady Grove CR?
It is owned by the City or Municipal Highway Agency.