Eureka Canyon RD over Shingle Mill Gulch
PoorSanta Cruz County, California · 2.0 MI N Rider RD · Structure no. 36C0137
- Built
- 1950
- 75 years old
- Condition
- Poor
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 22 ft
- 1 main span
- Daily traffic
- 500
- 2016 count
- Owner
- County
- County Highway Agency
About this bridge
Eureka Canyon RD over Shingle Mill Gulch is a steel stringer/multi-beam or girder carrying Eureka Canyon RD over Shingle Mill Gulch in Santa Cruz County, California. It was built in 1950, so it is 75 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 3 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 500 vehicles a day, roughly 10% of them trucks, projected to reach 850 by 2041. The structure is 22 ft (6.7 m) long and 22 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 7 Good | Some minor problems. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Eureka Canyon RD over Shingle Mill Gulch built?
It was built in 1950, making it 75 years old in 2025.
What condition is Eureka Canyon RD over Shingle Mill Gulch 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 May 2024.
How much traffic does Eureka Canyon RD over Shingle Mill Gulch carry?
About 500 vehicles per day (2016 count), of which roughly 10% are trucks.
How long is Eureka Canyon RD over Shingle Mill Gulch?
The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.4 m) and a deck 22 ft wide.
Who owns Eureka Canyon RD over Shingle Mill Gulch?
It is owned by the County Highway Agency.