Roundabout Details
Slater Rd. / I-5 SB Ramps
- Type
- Roundabout
- Status
- Existing
- Functional Class
- Freeway Ramps (Grade-Separated)
- Lane Type
- Multilane (2 Lane, 2x1 max)
- Control Type
- All-Way Yield
- Previous Control Type
- One/Two-Way Stop
- Other Control Type
- None
- Approaches
- 3
- Driveways
- 0
- Diameter (ICD)
- 38.10 m
- City
- Ferndale
- County
- Whatcom Co.
- State
- WA
- Country
- United States
- Latitude
- 48.81713
- Longitude
- -122.54999
- Year Completed
- 2014
- Notes
- Initially installed in November 2014 as a single-lane with a traversable central island. Includes a yield-controlled right-turn bypass lane. Modified in 2024-2025 to 2x1 with yield-controlled right-turn-only lane on north and west legs.