Twin Oaks Valley R over Mission RD BNSF RR Nctd
GoodSan Diego County, California · 475 Ft N/O W.San Marcos · Structure no. 57C0457
- Built
- 1977
- 48 years old
- Condition
- Good
- inspected March 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 223 ft
- 3 main spans
- Daily traffic
- 25,600
- 2023 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Twin Oaks Valley R over Mission RD BNSF RR Nctd is a concrete continuous tee beam carrying Twin Oaks Valley R over Mission RD BNSF RR Nctd in San Diego County, California. It was built in 1977, so it is 48 years old, younger than the California average of 54.8 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 25,600 vehicles a day, roughly 1% of them trucks, projected to reach 26,978 by 2045. The structure is 223 ft (68 m) long and 82 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Twin Oaks Valley R over Mission RD BNSF RR Nctd built?
It was built in 1977, making it 48 years old in 2025.
What condition is Twin Oaks Valley R over Mission RD BNSF RR Nctd 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 2023.
How much traffic does Twin Oaks Valley R over Mission RD BNSF RR Nctd carry?
About 25,600 vehicles per day (2023 count), of which roughly 1% are trucks.
How long is Twin Oaks Valley R over Mission RD BNSF RR Nctd?
The structure is 223 ft (68 m) long with a longest span of 64 ft (19.5 m) and a deck 82 ft wide.
Who owns Twin Oaks Valley R over Mission RD BNSF RR Nctd?
It is owned by the City or Municipal Highway Agency.