Marconi Ave over State Route 51
FairSacramento County, California · 03-SAC-051-5.50-SAC · Structure no. 24 0117
- Built
- 1947
- 78 years old
- Condition
- Fair
- inspected November 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 120 ft
- 2 main spans
- Daily traffic
- 40,000
- 2010 count
- Owner
- State
- State Highway Agency
About this bridge
Marconi Ave over State Route 51 is a concrete continuous box beam or girders - multiple carrying Marconi Ave over State Route 51 in Sacramento County, California. It was built in 1947, so it is 78 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 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 40,000 vehicles a day, roughly 2% of them trucks, projected to reach 52,385 by 2046. The structure is 120 ft (36.5 m) long and 60 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Marconi Ave over State Route 51 built?
It was built in 1947, making it 78 years old in 2025.
What condition is Marconi Ave over State Route 51 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 November 2024.
How much traffic does Marconi Ave over State Route 51 carry?
About 40,000 vehicles per day (2010 count), of which roughly 2% are trucks.
How long is Marconi Ave over State Route 51?
The structure is 120 ft (36.5 m) long with a longest span of 58 ft (17.7 m) and a deck 60 ft wide.
Who owns Marconi Ave over State Route 51?
It is owned by the State Highway Agency.