U.S. Highway 101 over Corte Madera CR & Sfd Bl
FairMarin County, California · 04-MRN-101-8.47-LKSP · Structure no. 27 0008S
- Built
- 1961
- 64 years old, rebuilt 1975
- Condition
- Fair
- inspected May 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 1,765 ft
- 12 main spans
- Daily traffic
- 26,000
- 1998 count
- Owner
- State
- State Highway Agency
About this bridge
U.S. Highway 101 over Corte Madera CR & Sfd Bl is a concrete continuous box beam or girders - multiple carrying U.S. Highway 101 over Corte Madera CR & Sfd Bl in Marin County, California. It was built in 1961 and reconstructed in 1975, so it is 64 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 26,000 vehicles a day, roughly 1% of them trucks, projected to reach 44,347 by 2042. The structure is 1,765 ft (538 m) long and 33 ft wide.
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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was U.S. Highway 101 over Corte Madera CR & Sfd Bl built?
It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1975.
What condition is U.S. Highway 101 over Corte Madera CR & Sfd Bl 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 May 2024.
How much traffic does U.S. Highway 101 over Corte Madera CR & Sfd Bl carry?
About 26,000 vehicles per day (1998 count), of which roughly 1% are trucks.
How long is U.S. Highway 101 over Corte Madera CR & Sfd Bl?
The structure is 1,765 ft (538 m) long with a longest span of 80 ft (24.4 m) and a deck 33 ft wide.
Who owns U.S. Highway 101 over Corte Madera CR & Sfd Bl?
It is owned by the State Highway Agency.