Mt Aukum RD over Middle Fk Cosumnes River
FairEl Dorado County, California · 5.4 MI S Pleasant Valy RD · Structure no. 25C0027
- Built
- 1968
- 57 years old
- Condition
- Fair
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 328 ft
- 3 main spans
- Daily traffic
- 3,695
- 2010 count
- Owner
- County
- County Highway Agency
About this bridge
Mt Aukum RD over Middle Fk Cosumnes River is a steel stringer/multi-beam or girder carrying Mt Aukum RD over Middle Fk Cosumnes River in El Dorado County, California. It was built in 1968, so it is 57 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 3,695 vehicles a day, roughly 3% of them trucks, projected to reach 4,436 by 2043. The structure is 328 ft (100.1 m) long and 35 ft wide. If it were closed, the detour would be 19.9 mi (32 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 | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mt Aukum RD over Middle Fk Cosumnes River built?
It was built in 1968, making it 57 years old in 2025.
What condition is Mt Aukum RD over Middle Fk Cosumnes River 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 June 2023.
How much traffic does Mt Aukum RD over Middle Fk Cosumnes River carry?
About 3,695 vehicles per day (2010 count), of which roughly 3% are trucks.
How long is Mt Aukum RD over Middle Fk Cosumnes River?
The structure is 328 ft (100.1 m) long with a longest span of 127 ft (38.7 m) and a deck 35 ft wide.
Who owns Mt Aukum RD over Middle Fk Cosumnes River?
It is owned by the County Highway Agency.