Hammett RD over State Route 99
GoodStanislaus County, California · 10-STA-099-R24.27 · Structure no. 38 0140
- Built
- 1970
- 55 years old
- Condition
- Good
- inspected March 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 199 ft
- 2 main spans
- Daily traffic
- 2,000
- 2002 count
- Owner
- State
- State Highway Agency
About this bridge
Hammett RD over State Route 99 is a prestressed concrete continuous box beam or girders - multiple carrying Hammett RD over State Route 99 in Stanislaus County, California. It was built in 1970, so it is 55 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 2,000 vehicles a day, roughly 2% of them trucks, projected to reach 3,728 by 2041. The structure is 199 ft (60.7 m) long and 47 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| 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 Hammett RD over State Route 99 built?
It was built in 1970, making it 55 years old in 2025.
What condition is Hammett RD over State Route 99 in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.
How much traffic does Hammett RD over State Route 99 carry?
About 2,000 vehicles per day (2002 count), of which roughly 2% are trucks.
How long is Hammett RD over State Route 99?
The structure is 199 ft (60.7 m) long with a longest span of 109 ft (33.2 m) and a deck 47 ft wide.
Who owns Hammett RD over State Route 99?
It is owned by the State Highway Agency.