Mcknight RD over Trib to Black CR
GoodSt. Louis County, Missouri · S 17 T 45 N R 6 E · Structure no. 34705
- Built
- 2015
- 10 years old
- Condition
- Good
- inspected January 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 53 ft
- 1 main span
- Daily traffic
- 15,000
- 2023 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Mcknight RD over Trib to Black CR is a prestressed concrete stringer/multi-beam or girder carrying Mcknight RD over Trib to Black CR in St. Louis County, Missouri. It was built in 2015, so it is 10 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 15,000 vehicles a day, roughly 1% of them trucks, projected to reach 20,250 by 2043. The structure is 53 ft (16.2 m) long and 41 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 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 Mcknight RD over Trib to Black CR built?
It was built in 2015, making it 10 years old in 2025.
What condition is Mcknight RD over Trib to Black 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 Mcknight RD over Trib to Black CR carry?
About 15,000 vehicles per day (2023 count), of which roughly 1% are trucks.
How long is Mcknight RD over Trib to Black CR?
The structure is 53 ft (16.2 m) long with a longest span of 50 ft (15.2 m) and a deck 41 ft wide.
Who owns Mcknight RD over Trib to Black CR?
It is owned by the City or Municipal Highway Agency.