Cottonwood Gates over Los Angeles Aqueduct
PoorInyo County, California · 0.6 MI W of RTE 395 JCT · Structure no. 48C0050
- Built
- 1927
- 98 years old
- Condition
- Poor
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 35 ft
- 1 main span
- Daily traffic
- 50
- 2019 count
- Owner
- Local
- Other Local Agency
About this bridge
Cottonwood Gates over Los Angeles Aqueduct is a steel stringer/multi-beam or girder carrying Cottonwood Gates over Los Angeles Aqueduct in Inyo County, California. It was built in 1927, so it is 98 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 50 vehicles a day, roughly 6% of them trucks, projected to reach 52 by 2040. The structure is 35 ft (10.7 m) long and 17 ft wide. If it were closed, the detour would be 123.7 mi (199 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Cottonwood Gates over Los Angeles Aqueduct built?
It was built in 1927, making it 98 years old in 2025.
What condition is Cottonwood Gates over Los Angeles Aqueduct in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2023.
How much traffic does Cottonwood Gates over Los Angeles Aqueduct carry?
About 50 vehicles per day (2019 count), of which roughly 6% are trucks.
How long is Cottonwood Gates over Los Angeles Aqueduct?
The structure is 35 ft (10.7 m) long with a longest span of 29 ft (8.8 m) and a deck 17 ft wide.
Who owns Cottonwood Gates over Los Angeles Aqueduct?
It is owned by the Other Local Agency.