Wilson WY-N99 Onrp over State Route 99 SB
FairSan Joaquin County, California · 10-SJ-099-21.67 · Structure no. 29 0118C
- Built
- 1949
- 76 years old, rebuilt 2021
- Condition
- Fair
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 171 ft
- 3 main spans
- Daily traffic
- 5,100
- 1998 count
- Owner
- State
- State Highway Agency
About this bridge
Wilson WY-N99 Onrp over State Route 99 SB is a steel continuous stringer/multi-beam or girder carrying Wilson WY-N99 Onrp over State Route 99 SB in San Joaquin County, California. It was built in 1949 and reconstructed in 2021, so it is 76 years old, older 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 5,100 vehicles a day, roughly 2% of them trucks, projected to reach 12,911 by 2042. The structure is 171 ft (52 m) long and 26 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Wilson WY-N99 Onrp over State Route 99 SB built?
It was built in 1949, making it 76 years old in 2025. It was reconstructed in 2021.
What condition is Wilson WY-N99 Onrp over State Route 99 SB 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 June 2024.
How much traffic does Wilson WY-N99 Onrp over State Route 99 SB carry?
About 5,100 vehicles per day (1998 count), of which roughly 2% are trucks.
How long is Wilson WY-N99 Onrp over State Route 99 SB?
The structure is 171 ft (52 m) long with a longest span of 75 ft (22.9 m) and a deck 26 ft wide.
Who owns Wilson WY-N99 Onrp over State Route 99 SB?
It is owned by the State Highway Agency.