State Route 52 EB over Mast Bl San Diego River
PoorSan Diego County, California · 11-SD-052-13.80-SNT · Structure no. 57 0983R
- Built
- 1993
- 32 years old
- Condition
- Poor
- inspected May 2023
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete Continuous
- Length
- 1,799 ft
- 10 main spans
- Daily traffic
- 42,000
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 52 EB over Mast Bl San Diego River is a prestressed concrete continuous box beam or girders - single or spread carrying State Route 52 EB over Mast Bl San Diego River in San Diego County, California. It was built in 1993, so it is 32 years old, younger 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 42,000 vehicles a day, roughly 3% of them trucks, projected to reach 54,883 by 2043. The structure is 1,799 ft (548.3 m) long and 43 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| 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 State Route 52 EB over Mast Bl San Diego River built?
It was built in 1993, making it 32 years old in 2025.
What condition is State Route 52 EB over Mast Bl San Diego 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 May 2023.
How much traffic does State Route 52 EB over Mast Bl San Diego River carry?
About 42,000 vehicles per day (2019 count), of which roughly 3% are trucks.
How long is State Route 52 EB over Mast Bl San Diego River?
The structure is 1,799 ft (548.3 m) long with a longest span of 225 ft (68.6 m) and a deck 43 ft wide.
Who owns State Route 52 EB over Mast Bl San Diego River?
It is owned by the State Highway Agency.