N. Coast Highway over San Luis Rey River
PoorSan Diego County, California · 0.22M S/O Harbor DR · Structure no. 57C0322
- Built
- 1929
- 96 years old, rebuilt 1969
- Condition
- Poor
- inspected June 2023
- Type
- Truss - Deck
- Steel
- Length
- 950 ft
- 3 main spans
- Daily traffic
- 12,000
- 2022 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
N. Coast Highway over San Luis Rey River is a steel truss - deck carrying N. Coast Highway over San Luis Rey River in San Diego County, California. It was built in 1929 and reconstructed in 1969, so it is 96 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 12,000 vehicles a day, roughly 2% of them trucks, projected to reach 15,120 by 2040. The structure is 950 ft (289.6 m) long and 49 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 N. Coast Highway over San Luis Rey River built?
It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1969.
What condition is N. Coast Highway over San Luis Rey River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2023.
How much traffic does N. Coast Highway over San Luis Rey River carry?
About 12,000 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is N. Coast Highway over San Luis Rey River?
The structure is 950 ft (289.6 m) long with a longest span of 268 ft (81.7 m) and a deck 49 ft wide.
Who owns N. Coast Highway over San Luis Rey River?
It is owned by the City or Municipal Highway Agency.