Eight Mile RD over State Route 99
GoodSan Joaquin County, California · 10-SJ-099-25.42 · Structure no. 29 0100
- Built
- 1964
- 61 years old
- Condition
- Good
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 231 ft
- 2 main spans
- Daily traffic
- 5,840
- 1998 count
- Owner
- State
- State Highway Agency
About this bridge
Eight Mile RD over State Route 99 is a prestressed concrete continuous stringer/multi-beam or girder carrying Eight Mile RD over State Route 99 in San Joaquin County, California. It was built in 1964, so it is 61 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 5,840 vehicles a day, roughly 2% of them trucks, projected to reach 4,450 by 2042. The structure is 231 ft (70.5 m) long and 39 ft wide. If it were closed, the detour would be 3.1 mi (5 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 Eight Mile RD over State Route 99 built?
It was built in 1964, making it 61 years old in 2025.
What condition is Eight Mile 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 June 2024.
How much traffic does Eight Mile RD over State Route 99 carry?
About 5,840 vehicles per day (1998 count), of which roughly 2% are trucks.
How long is Eight Mile RD over State Route 99?
The structure is 231 ft (70.5 m) long with a longest span of 79 ft (24.2 m) and a deck 39 ft wide.
Who owns Eight Mile RD over State Route 99?
It is owned by the State Highway Agency.