Mcknight RD over Deer CR
FairPosted for loadSt. Louis County, Missouri · S 28 T 45 N R 6 E · Structure no. 30697
- Built
- 2004
- 21 years old
- Condition
- Fair
- inspected May 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 119 ft
- 3 main spans
- Daily traffic
- 18,796
- 2024 count
- Owner
- County
- County Highway Agency
About this bridge
Mcknight RD over Deer CR is a prestressed concrete continuous box beam or girders - multiple carrying Mcknight RD over Deer CR in St. Louis County, Missouri. It was built in 2004, so it is 21 years old, younger than the Missouri average of 45.1 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.
It carries about 18,796 vehicles a day, roughly 5% of them trucks, projected to reach 25,375 by 2044. The structure is 119 ft (36.4 m) long and 68 ft wide. If it were closed, the detour would be 5 mi (8 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Mcknight RD over Deer CR built?
It was built in 2004, making it 21 years old in 2025.
What condition is Mcknight RD over Deer CR in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.
How much traffic does Mcknight RD over Deer CR carry?
About 18,796 vehicles per day (2024 count), of which roughly 5% are trucks.
How long is Mcknight RD over Deer CR?
The structure is 119 ft (36.4 m) long with a longest span of 45 ft (13.7 m) and a deck 68 ft wide.
Who owns Mcknight RD over Deer CR?
It is owned by the County Highway Agency.