State Route 99 SB over Black Rascal Canal
PoorMerced County, California · 10-MER-099-17.30 · Structure no. 39 0010L
- Built
- 1964
- 61 years old
- Condition
- Poor
- inspected December 2023
- Type
- Slab
- Concrete Continuous
- Length
- 93 ft
- 4 main spans
- Daily traffic
- 25,500
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 99 SB over Black Rascal Canal is a concrete continuous slab carrying State Route 99 SB over Black Rascal Canal in Merced County, California. It was built in 1964, so it is 61 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 25,500 vehicles a day, roughly 20% of them trucks, projected to reach 37,612 by 2041. The structure is 93 ft (28.4 m) long and 40 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 99 SB over Black Rascal Canal built?
It was built in 1964, making it 61 years old in 2025.
What condition is State Route 99 SB over Black Rascal Canal 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 December 2023.
How much traffic does State Route 99 SB over Black Rascal Canal carry?
About 25,500 vehicles per day (2009 count), of which roughly 20% are trucks.
How long is State Route 99 SB over Black Rascal Canal?
The structure is 93 ft (28.4 m) long with a longest span of 26 ft (7.9 m) and a deck 40 ft wide.
Who owns State Route 99 SB over Black Rascal Canal?
It is owned by the State Highway Agency.