Is 170 E over Cst Forest Park Pkwy
FairPosted for loadSt. Louis County, Missouri · S 2496 T 45 N R 6 E · Structure no. 2418
- Built
- 1968
- 57 years old, rebuilt 1983
- Condition
- Fair
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 146 ft
- 3 main spans
- Daily traffic
- 91,663
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Is 170 E over Cst Forest Park Pkwy is a steel stringer/multi-beam or girder carrying Is 170 E over Cst Forest Park Pkwy in St. Louis County, Missouri. It was built in 1968 and reconstructed in 1983, so it is 57 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.
It carries about 91,663 vehicles a day, roughly 4% of them trucks, projected to reach 114,579 by 2044. The structure is 146 ft (44.5 m) long and 106 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Is 170 E over Cst Forest Park Pkwy built?
It was built in 1968, making it 57 years old in 2025. It was reconstructed in 1983.
What condition is Is 170 E over Cst Forest Park Pkwy 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 October 2024.
How much traffic does Is 170 E over Cst Forest Park Pkwy carry?
About 91,663 vehicles per day (2024 count), of which roughly 4% are trucks.
How long is Is 170 E over Cst Forest Park Pkwy?
The structure is 146 ft (44.5 m) long with a longest span of 70 ft (21.4 m) and a deck 106 ft wide.
Who owns Is 170 E over Cst Forest Park Pkwy?
It is owned by the State Highway Agency.