Mammoth RD over Trib of Big Rvr
GoodJefferson County, Missouri · S 11 T 39 N R 3 E · Structure no. 33018
- Built
- 2010
- 15 years old
- Condition
- Good
- inspected February 2025
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 90 ft
- 1 main span
- Daily traffic
- 221
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Mammoth RD over Trib of Big Rvr is a prestressed concrete stringer/multi-beam or girder carrying Mammoth RD over Trib of Big Rvr in Jefferson County, Missouri. It was built in 2010, so it is 15 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 221 vehicles a day, roughly 2% of them trucks, projected to reach 442 by 2043. The structure is 90 ft (27.4 m) long and 39 ft wide. If it were closed, the detour would be 98.8 mi (159 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 | 9 Excellent | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mammoth RD over Trib of Big Rvr built?
It was built in 2010, making it 15 years old in 2025.
What condition is Mammoth RD over Trib of Big Rvr 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 February 2025.
How much traffic does Mammoth RD over Trib of Big Rvr carry?
About 221 vehicles per day (2023 count), of which roughly 2% are trucks.
How long is Mammoth RD over Trib of Big Rvr?
The structure is 90 ft (27.4 m) long with a longest span of 85 ft (25.9 m) and a deck 39 ft wide.
Who owns Mammoth RD over Trib of Big Rvr?
It is owned by the County Highway Agency.