Harkins Slough RD over Watsonville Slough
FairSanta Cruz County, California · East of Ohlone Parkway · Structure no. 36C0165
- Built
- 2007
- 18 years old
- Condition
- Fair
- inspected November 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 672 ft
- 7 main spans
- Daily traffic
- 5,000
- 2016 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Harkins Slough RD over Watsonville Slough is a prestressed concrete continuous box beam or girders - multiple carrying Harkins Slough RD over Watsonville Slough in Santa Cruz County, California. It was built in 2007, so it is 18 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 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 5,000 vehicles a day, roughly 5% of them trucks, projected to reach 6,325 by 2046. The structure is 672 ft (204.9 m) long and 52 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Harkins Slough RD over Watsonville Slough built?
It was built in 2007, making it 18 years old in 2025.
What condition is Harkins Slough RD over Watsonville Slough 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 Harkins Slough RD over Watsonville Slough carry?
About 5,000 vehicles per day (2016 count), of which roughly 5% are trucks.
How long is Harkins Slough RD over Watsonville Slough?
The structure is 672 ft (204.9 m) long with a longest span of 100 ft (30.5 m) and a deck 52 ft wide.
Who owns Harkins Slough RD over Watsonville Slough?
It is owned by the City or Municipal Highway Agency.