Avenue 18 1/2 over UP RR
FairMadera County, California · East of S.H. 99 · Structure no. 41C0058
- Built
- 1974
- 51 years old
- Condition
- Fair
- inspected January 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 197 ft
- 3 main spans
- Daily traffic
- 1,463
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Avenue 18 1/2 over UP RR is a concrete continuous box beam or girders - multiple carrying Avenue 18 1/2 over UP RR in Madera County, California. It was built in 1974, so it is 51 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 6 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 1,463 vehicles a day, roughly 10% of them trucks, projected to reach 2,974 by 2042. The structure is 197 ft (60 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Avenue 18 1/2 over UP RR built?
It was built in 1974, making it 51 years old in 2025.
What condition is Avenue 18 1/2 over 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 Avenue 18 1/2 over UP RR carry?
About 1,463 vehicles per day (2020 count), of which roughly 10% are trucks.
How long is Avenue 18 1/2 over UP RR?
The structure is 197 ft (60 m) long with a longest span of 95 ft (29 m) and a deck 47 ft wide.
Who owns Avenue 18 1/2 over UP RR?
It is owned by the County Highway Agency.