Rp IS55N to IS270E over Is 55 Is 255
GoodSt. Louis County, Missouri · S 34 T 44 N R 6 E · Structure no. 3974
- Built
- 1991
- 34 years old
- Condition
- Good
- inspected March 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 1,334 ft
- 14 main spans
- Daily traffic
- 25,902
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Rp IS55N to IS270E over Is 55 Is 255 is a steel continuous stringer/multi-beam or girder carrying Rp IS55N to IS270E over Is 55 Is 255 in St. Louis County, Missouri. It was built in 1991, so it is 34 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 25,902 vehicles a day, roughly 18% of them trucks, projected to reach 32,378 by 2044. The structure is 1,334 ft (406.6 m) long and 41 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Rp IS55N to IS270E over Is 55 Is 255 built?
It was built in 1991, making it 34 years old in 2025.
What condition is Rp IS55N to IS270E over Is 55 Is 255 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 March 2023.
How much traffic does Rp IS55N to IS270E over Is 55 Is 255 carry?
About 25,902 vehicles per day (2024 count), of which roughly 18% are trucks.
How long is Rp IS55N to IS270E over Is 55 Is 255?
The structure is 1,334 ft (406.6 m) long with a longest span of 166 ft (50.6 m) and a deck 41 ft wide.
Who owns Rp IS55N to IS270E over Is 55 Is 255?
It is owned by the State Highway Agency.