Salt River RD over Spencer CR
FairSt. Charles County, Missouri · S 735 T 47 N R 4 E · Structure no. 33916
- Built
- 2011
- 14 years old
- Condition
- Fair
- inspected January 2024
- Type
- Tee Beam
- Prestressed Concrete Continuous
- Length
- 343 ft
- 3 main spans
- Daily traffic
- 5,000
- 2024 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Salt River RD over Spencer CR is a prestressed concrete continuous tee beam carrying Salt River RD over Spencer CR in St. Charles County, Missouri. It was built in 2011, so it is 14 years old, younger 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 5,000 vehicles a day, roughly 5% of them trucks, projected to reach 7,750 by 2044. The structure is 343 ft (104.5 m) long and 65 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 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 Salt River RD over Spencer CR built?
It was built in 2011, making it 14 years old in 2025.
What condition is Salt River RD over Spencer CR 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 January 2024.
How much traffic does Salt River RD over Spencer CR carry?
About 5,000 vehicles per day (2024 count), of which roughly 5% are trucks.
How long is Salt River RD over Spencer CR?
The structure is 343 ft (104.5 m) long with a longest span of 120 ft (36.6 m) and a deck 65 ft wide.
Who owns Salt River RD over Spencer CR?
It is owned by the City or Municipal Highway Agency.