Bald Hill RD over Flat CR
GoodSt. Louis County, Missouri · S 2071 T 43 N R 3 E · Structure no. 31123
- Built
- 2007
- 18 years old
- Condition
- Good
- inspected November 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 35 ft
- 3 main spans
- Daily traffic
- 1,000
- 2023 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Bald Hill RD over Flat CR is a concrete continuous culvert carrying Bald Hill RD over Flat CR in St. Louis County, Missouri. It was built in 2007, so it is 18 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 1,000 vehicles a day, roughly 1% of them trucks, projected to reach 1,350 by 2043. The structure is 35 ft (10.6 m) long and 40 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 |
|---|---|---|
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Bald Hill RD over Flat CR built?
It was built in 2007, making it 18 years old in 2025.
What condition is Bald Hill RD over Flat 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 2023.
How much traffic does Bald Hill RD over Flat CR carry?
About 1,000 vehicles per day (2023 count), of which roughly 1% are trucks.
How long is Bald Hill RD over Flat CR?
The structure is 35 ft (10.6 m) long with a longest span of 11 ft (3.5 m) and a deck 40 ft wide.
Who owns Bald Hill RD over Flat CR?
It is owned by the City or Municipal Highway Agency.