State Route 99 NB over Collier Road
FairMerced County, California · 10-MER-099-R31.93 · Structure no. 39 0224R
- Built
- 1997
- 28 years old, rebuilt 2022
- Condition
- Fair
- inspected May 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 99 ft
- 1 main span
- Daily traffic
- 32,000
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 99 NB over Collier Road is a prestressed concrete box beam or girders - multiple carrying State Route 99 NB over Collier Road in Merced County, California. It was built in 1997 and reconstructed in 2022, so it is 28 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 6 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 32,000 vehicles a day, roughly 25% of them trucks, projected to reach 48,416 by 2046. The structure is 99 ft (30.2 m) long and 42 ft wide. If it were closed, the detour would be 0.6 mi (1 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 State Route 99 NB over Collier Road built?
It was built in 1997, making it 28 years old in 2025. It was reconstructed in 2022.
What condition is State Route 99 NB over Collier Road 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 State Route 99 NB over Collier Road carry?
About 32,000 vehicles per day (2009 count), of which roughly 25% are trucks.
How long is State Route 99 NB over Collier Road?
The structure is 99 ft (30.2 m) long with a longest span of 95 ft (28.9 m) and a deck 42 ft wide.
Who owns State Route 99 NB over Collier Road?
It is owned by the State Highway Agency.