Roundabout Details
Porter Rd. / Simmons Rd.
- Type
- Roundabout
- Status
- Existing
- Functional Class
- Other (At-Grade)
- Lane Type
- Single-Lane
- Control Type
- All-Way Yield
- Previous Control Type
- One/Two-Way Stop
- Other Control Type
- None
- Approaches
- 3
- Driveways
- 0
- Diameter (ICD)
- 31.73 m
- City
- O'Fallon
- County
- St. Clair Co.
- State
- IL
- Country
- United States
- Latitude
- 38.60258
- Longitude
- -89.93231
- Year Completed
- 2011
- Notes
- Year Completed estimated (2010-2011). ICD estimated from Google Maps linework.