Mission Avenue over Old ST RTE 99 & UP RR
FairMerced County, California · 0.3 MI Nw/O S Coffee ST · Structure no. 39C0394
- Built
- 2006
- 19 years old
- Condition
- Fair
- inspected January 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 352 ft
- 3 main spans
- Daily traffic
- 800
- 1998 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Mission Avenue over Old ST RTE 99 & UP RR is a prestressed concrete continuous box beam or girders - multiple carrying Mission Avenue over Old ST RTE 99 & UP RR in Merced County, California. It was built in 2006, so it is 19 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 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 800 vehicles a day, roughly 4% of them trucks, projected to reach 1,308 by 2046. The structure is 352 ft (107.4 m) long and 97 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Mission Avenue over Old ST RTE 99 & UP RR built?
It was built in 2006, making it 19 years old in 2025.
What condition is Mission Avenue over Old ST RTE 99 & UP RR 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 January 2024.
How much traffic does Mission Avenue over Old ST RTE 99 & UP RR carry?
About 800 vehicles per day (1998 count), of which roughly 4% are trucks.
How long is Mission Avenue over Old ST RTE 99 & UP RR?
The structure is 352 ft (107.4 m) long with a longest span of 121 ft (37 m) and a deck 97 ft wide.
Who owns Mission Avenue over Old ST RTE 99 & UP RR?
It is owned by the City or Municipal Highway Agency.