Golden STATE-S99 over State Route 99
FairMerced County, California · 10-MER-099-R36.34 · Structure no. 39 0191K
- Built
- 1973
- 52 years old
- Condition
- Fair
- inspected May 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 324 ft
- 2 main spans
- Daily traffic
- 4,200
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
Golden STATE-S99 over State Route 99 is a prestressed concrete continuous box beam or girders - multiple carrying Golden STATE-S99 over State Route 99 in Merced County, California. It was built in 1973, so it is 52 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 5 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 4,200 vehicles a day, roughly 8% of them trucks, projected to reach 5,544 by 2046. The structure is 324 ft (98.8 m) long and 26 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 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Golden STATE-S99 over State Route 99 built?
It was built in 1973, making it 52 years old in 2025.
What condition is Golden STATE-S99 over State Route 99 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 May 2024.
How much traffic does Golden STATE-S99 over State Route 99 carry?
About 4,200 vehicles per day (2015 count), of which roughly 8% are trucks.
How long is Golden STATE-S99 over State Route 99?
The structure is 324 ft (98.8 m) long with a longest span of 162 ft (49.3 m) and a deck 26 ft wide.
Who owns Golden STATE-S99 over State Route 99?
It is owned by the State Highway Agency.