Is 270 E over Cst West Port Plaza DR
PoorSt. Louis County, Missouri · S 1312 T 46 N R 5 E · Structure no. 1233
- Built
- 1965
- 60 years old, rebuilt 1984
- Condition
- Poor
- inspected August 2024
- Type
- Slab
- Concrete Continuous
- Length
- 153 ft
- 3 main spans
- Daily traffic
- 137,112
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Is 270 E over Cst West Port Plaza DR is a concrete continuous slab carrying Is 270 E over Cst West Port Plaza DR in St. Louis County, Missouri. It was built in 1965 and reconstructed in 1984, so it is 60 years old, older than the Missouri average of 45.1 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 137,112 vehicles a day, roughly 12% of them trucks, projected to reach 171,390 by 2044. The structure is 153 ft (46.6 m) long and 154 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Is 270 E over Cst West Port Plaza DR built?
It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1984.
What condition is Is 270 E over Cst West Port Plaza DR in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.
How much traffic does Is 270 E over Cst West Port Plaza DR carry?
About 137,112 vehicles per day (2024 count), of which roughly 12% are trucks.
How long is Is 270 E over Cst West Port Plaza DR?
The structure is 153 ft (46.6 m) long with a longest span of 62 ft (18.9 m) and a deck 154 ft wide.
Who owns Is 270 E over Cst West Port Plaza DR?
It is owned by the State Highway Agency.