Mason RD over Smith CR
GoodPosted for loadSt. Louis County, Missouri · S 1923 T 45 N R 5 E · Structure no. 34642
- Built
- 2013
- 12 years old
- Condition
- Good
- inspected March 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 41 ft
- 1 main span
- Daily traffic
- 12,294
- 2024 count
- Owner
- County
- County Highway Agency
About this bridge
Mason RD over Smith CR is a prestressed concrete box beam or girders - multiple carrying Mason RD over Smith CR in St. Louis County, Missouri. It was built in 2013, so it is 12 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. Its operating status is: posted for load restriction.
It carries about 12,294 vehicles a day, roughly 5% of them trucks, projected to reach 16,597 by 2044. The structure is 41 ft (12.4 m) long and 24 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mason RD over Smith CR built?
It was built in 2013, making it 12 years old in 2025.
What condition is Mason RD over Smith CR 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 2024.
How much traffic does Mason RD over Smith CR carry?
About 12,294 vehicles per day (2024 count), of which roughly 5% are trucks.
How long is Mason RD over Smith CR?
The structure is 41 ft (12.4 m) long with a longest span of 35 ft (10.6 m) and a deck 24 ft wide.
Who owns Mason RD over Smith CR?
It is owned by the County Highway Agency.