Is 170 E over Or 270
GoodSt. Louis County, Missouri · S 939 T 47 N R 6 E · Structure no. 37506
- Built
- 2025
- 0 years old
- Condition
- Good
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 235 ft
- 3 main spans
- Daily traffic
- 10,017
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Is 170 E over Or 270 is a prestressed concrete continuous stringer/multi-beam or girder carrying Is 170 E over Or 270 in St. Louis County, Missouri. It was built in 2025, so it is 0 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: new structure not yet open to traffic.
It carries about 10,017 vehicles a day, roughly 18% of them trucks, projected to reach 12,521 by 2044. The structure is 235 ft (71.5 m) long and 39 ft wide. If it were closed, the detour would be 5 mi (8 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 | 9 Excellent | No problems noted. |
| Superstructure | 9 Excellent | No problems noted. |
| Substructure | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Is 170 E over Or 270 built?
It was built in 2025, making it 0 years old in 2025.
What condition is Is 170 E over Or 270 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 2025.
How much traffic does Is 170 E over Or 270 carry?
About 10,017 vehicles per day (2024 count), of which roughly 18% are trucks.
How long is Is 170 E over Or 270?
The structure is 235 ft (71.5 m) long with a longest span of 90 ft (27.4 m) and a deck 39 ft wide.
Who owns Is 170 E over Or 270?
It is owned by the State Highway Agency.