State Route 99 over West 16th ST UP RR
FairMerced County, California · 10-MER-099-16.60-MER · Structure no. 39 0230
- Built
- 2013
- 12 years old
- Condition
- Fair
- inspected May 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 564 ft
- 4 main spans
- Daily traffic
- 51,000
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 99 over West 16th ST UP RR is a prestressed concrete continuous box beam or girders - multiple carrying State Route 99 over West 16th ST UP RR in Merced County, California. It was built in 2013, so it is 12 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 51,000 vehicles a day, roughly 10% of them trucks, projected to reach 74,974 by 2044. The structure is 564 ft (171.8 m) long and 115 ft wide. If it were closed, the detour would be 4.3 mi (7 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 99 over West 16th ST UP RR built?
It was built in 2013, making it 12 years old in 2025.
What condition is State Route 99 over West 16th ST UP RR 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 over West 16th ST UP RR carry?
About 51,000 vehicles per day (2009 count), of which roughly 10% are trucks.
How long is State Route 99 over West 16th ST UP RR?
The structure is 564 ft (171.8 m) long with a longest span of 168 ft (51.2 m) and a deck 115 ft wide.
Who owns State Route 99 over West 16th ST UP RR?
It is owned by the State Highway Agency.