Is 170 E over Mo 340 Rp IS170E to MO3
GoodSt. Louis County, Missouri · S 5 T 45 N R 6 E · Structure no. 31529
- Built
- 2006
- 19 years old
- Condition
- Good
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 208 ft
- 1 main span
- Daily traffic
- 50,028
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Is 170 E over Mo 340 Rp IS170E to MO3 is a steel stringer/multi-beam or girder carrying Is 170 E over Mo 340 Rp IS170E to MO3 in St. Louis County, Missouri. It was built in 2006, so it is 19 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 50,028 vehicles a day, roughly 4% of them trucks, projected to reach 62,535 by 2044. The structure is 208 ft (63.4 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Is 170 E over Mo 340 Rp IS170E to MO3 built?
It was built in 2006, making it 19 years old in 2025.
What condition is Is 170 E over Mo 340 Rp IS170E to MO3 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 October 2024.
How much traffic does Is 170 E over Mo 340 Rp IS170E to MO3 carry?
About 50,028 vehicles per day (2024 count), of which roughly 4% are trucks.
How long is Is 170 E over Mo 340 Rp IS170E to MO3?
The structure is 208 ft (63.4 m) long with a longest span of 208 ft (63.4 m) and a deck 55 ft wide.
Who owns Is 170 E over Mo 340 Rp IS170E to MO3?
It is owned by the State Highway Agency.