Thornton RD over N. Fork Mokelumne R
FairSacramento County, California · Sj & Sac County Line · Structure no. 24C0523
- Built
- 2004
- 21 years old
- Condition
- Fair
- inspected October 2024
- Type
- Tee Beam
- Prestressed Concrete Continuous
- Length
- 2,084 ft
- 3 main spans
- Daily traffic
- 671
- 2009 count
- Owner
- County
- County Highway Agency
About this bridge
Thornton RD over N. Fork Mokelumne R is a prestressed concrete continuous tee beam carrying Thornton RD over N. Fork Mokelumne R in Sacramento County, California. It was built in 2004, so it is 21 years old, younger 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 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 671 vehicles a day, roughly 5% of them trucks, projected to reach 1,101 by 2042. The structure is 2,084 ft (635.1 m) long and 37 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Thornton RD over N. Fork Mokelumne R built?
It was built in 2004, making it 21 years old in 2025.
What condition is Thornton RD over N. Fork Mokelumne R 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 October 2024.
How much traffic does Thornton RD over N. Fork Mokelumne R carry?
About 671 vehicles per day (2009 count), of which roughly 5% are trucks.
How long is Thornton RD over N. Fork Mokelumne R?
The structure is 2,084 ft (635.1 m) long with a longest span of 140 ft (42.7 m) and a deck 37 ft wide.
Who owns Thornton RD over N. Fork Mokelumne R?
It is owned by the County Highway Agency.