Keyes Road over State Route 99
GoodStanislaus County, California · 10-STA-099-R7.81 · Structure no. 38 0139
- Built
- 1985
- 40 years old
- Condition
- Good
- inspected March 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 262 ft
- 2 main spans
- Daily traffic
- 5,100
- 2006 count
- Owner
- State
- State Highway Agency
About this bridge
Keyes Road over State Route 99 is a prestressed concrete continuous box beam or girders - multiple carrying Keyes Road over State Route 99 in Stanislaus County, California. It was built in 1985, so it is 40 years old, younger 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 5,100 vehicles a day, roughly 2% of them trucks, projected to reach 8,149 by 2045. The structure is 262 ft (80 m) long and 60 ft wide. If it were closed, the detour would be 2.5 mi (4 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 Keyes Road over State Route 99 built?
It was built in 1985, making it 40 years old in 2025.
What condition is Keyes Road 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 Keyes Road over State Route 99 carry?
About 5,100 vehicles per day (2006 count), of which roughly 2% are trucks.
How long is Keyes Road over State Route 99?
The structure is 262 ft (80 m) long with a longest span of 133 ft (40.5 m) and a deck 60 ft wide.
Who owns Keyes Road over State Route 99?
It is owned by the State Highway Agency.