Theiss RD S over Is 270
GoodSt. Louis County, Missouri · S 1988 T 44 N R 6 E · Structure no. 3884
- Built
- 1993
- 32 years old
- Condition
- Good
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 267 ft
- 2 main spans
- Daily traffic
- 1,207
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Theiss RD S over Is 270 is a steel continuous stringer/multi-beam or girder carrying Theiss RD S over Is 270 in St. Louis County, Missouri. It was built in 1993, so it is 32 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 1,207 vehicles a day, roughly 5% of them trucks, projected to reach 1,811 by 2044. The structure is 267 ft (81.4 m) long and 41 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 | 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 Theiss RD S over Is 270 built?
It was built in 1993, making it 32 years old in 2025.
What condition is Theiss RD S over Is 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 July 2024.
How much traffic does Theiss RD S over Is 270 carry?
About 1,207 vehicles per day (2024 count), of which roughly 5% are trucks.
How long is Theiss RD S over Is 270?
The structure is 267 ft (81.4 m) long with a longest span of 116 ft (35.4 m) and a deck 41 ft wide.
Who owns Theiss RD S over Is 270?
It is owned by the State Highway Agency.