Is 70 E over Is 170 Rp IS170W to I
FairSt. Louis County, Missouri · S 656 T 46 N R 6 E · Structure no. 2574
- Built
- 1979
- 46 years old
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 329 ft
- 4 main spans
- Daily traffic
- 61,156
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Is 70 E over Is 170 Rp IS170W to I is a steel continuous stringer/multi-beam or girder carrying Is 70 E over Is 170 Rp IS170W to I in St. Louis County, Missouri. It was built in 1979, so it is 46 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 61,156 vehicles a day, roughly 18% of them trucks, projected to reach 76,445 by 2044. The structure is 329 ft (100.3 m) long and 59 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 70 E over Is 170 Rp IS170W to I built?
It was built in 1979, making it 46 years old in 2025.
What condition is Is 70 E over Is 170 Rp IS170W to I 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 September 2024.
How much traffic does Is 70 E over Is 170 Rp IS170W to I carry?
About 61,156 vehicles per day (2024 count), of which roughly 18% are trucks.
How long is Is 70 E over Is 170 Rp IS170W to I?
The structure is 329 ft (100.3 m) long with a longest span of 111 ft (33.8 m) and a deck 59 ft wide.
Who owns Is 70 E over Is 170 Rp IS170W to I?
It is owned by the State Highway Agency.