Hammatt Ave over State Route 99
FairMerced County, California · 10-MER-099-R29.00-LVTN · Structure no. 39 0220
- Built
- 1997
- 28 years old
- Condition
- Fair
- inspected May 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 230 ft
- 2 main spans
- Daily traffic
- 1,100
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
Hammatt Ave over State Route 99 is a prestressed concrete continuous box beam or girders - multiple carrying Hammatt Ave over State Route 99 in Merced County, California. It was built in 1997, 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 1,100 vehicles a day, roughly 4% of them trucks, projected to reach 1,330 by 2046. The structure is 230 ft (70.1 m) long and 60 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 Hammatt Ave over State Route 99 built?
It was built in 1997, making it 28 years old in 2025.
What condition is Hammatt Ave 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 Hammatt Ave over State Route 99 carry?
About 1,100 vehicles per day (2015 count), of which roughly 4% are trucks.
How long is Hammatt Ave over State Route 99?
The structure is 230 ft (70.1 m) long with a longest span of 120 ft (36.5 m) and a deck 60 ft wide.
Who owns Hammatt Ave over State Route 99?
It is owned by the State Highway Agency.