Roundabout Details
Dunn Rd. / Sieloff Dr. / I-270 WB Entrance Ramp
- Type
- Roundabout
- Status
- Existing
- Functional Class
- Freeway Ramps (Grade-Separated)
- Lane Type
- Single-Lane
- Control Type
- All-Way Yield
- Previous Control Type
- None (new)
- Other Control Type
- None
- Approaches
- 3
- Driveways
- 0
- Diameter (ICD)
- 45.72 m
- City
- Hazelwood
- County
- St. Louis Co.
- State
- MO
- Country
- United States
- Latitude
- 38.77626
- Longitude
- -90.33959
- Year Completed
- 2023
- Notes
- Left-turn-only lane on east leg. Little deflection westbound.