Is 55 N over Cst Green Park RD
FairSt. Louis County, Missouri · S 26 T 44 N R 6 E · Structure no. 420
- Built
- 1962
- 63 years old, rebuilt 2022
- Condition
- Fair
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 243 ft
- 4 main spans
- Daily traffic
- 52,694
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Is 55 N over Cst Green Park RD is a steel continuous stringer/multi-beam or girder carrying Is 55 N over Cst Green Park RD in St. Louis County, Missouri. It was built in 1962 and reconstructed in 2022, so it is 63 years old, older 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.
It carries about 52,694 vehicles a day, roughly 12% of them trucks, projected to reach 65,868 by 2044. The structure is 243 ft (74.1 m) long and 65 ft wide. If it were closed, the detour would be 0.6 mi (1 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Is 55 N over Cst Green Park RD built?
It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2022.
What condition is Is 55 N over Cst Green Park RD 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 July 2024.
How much traffic does Is 55 N over Cst Green Park RD carry?
About 52,694 vehicles per day (2024 count), of which roughly 12% are trucks.
How long is Is 55 N over Cst Green Park RD?
The structure is 243 ft (74.1 m) long with a longest span of 67 ft (20.4 m) and a deck 65 ft wide.
Who owns Is 55 N over Cst Green Park RD?
It is owned by the State Highway Agency.