|
City,
State County Country |
Intersection (Lat, Lng) |
Type Status |
Control Type / Other Control Type | Approaches / Driveways |
Functional Class / LaneType |
Year Completed | Comments |
|---|---|---|---|---|---|---|---|
|
Avon,
CO Eagle United States |
Avon Rd./I-70 WB Ramps (39.63782, -106.52080) |
Roundabout Existing |
All-Way Yield Active Pedestrian Warning (flashing yellow) |
3 Approaches 0 Driveways |
Freeway Ramps Multilane (2 Lane) |
1997 | Highway ref. pt. 70-166.62. Raindrop-shaped central island. |
|
Avon,
CO Eagle United States |
Avon Rd./I-70 EB Ramps (39.63683, -106.52170) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Multilane (2 Lane) |
1997 | Highway ref. pt. 70-166.62. Previously controlled by two-way stop |
|
Ritchie,
MD Prince Georges United States |
Ritchie-Marlboro Rd./I-95 SB Ramps (38.86894, -76.84738) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Multilane (2 Lane) |
2001 | |
|
Ritchie,
MD Prince Georges United States |
Ritchie-Marlboro Rd./I-95 NB Ramps (38.86824, -76.84158) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Multilane (2 Lane) |
2001 | |
|
Ellicott City,
MD Howard United States |
MD 103/MD 100 WB Ramps (39.20846, -76.78294) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Single-Lane |
1998 | Opened November 1998. |
|
Ellicott City,
MD Howard United States |
MD 103/MD 100 EB Ramps (39.20733, -76.78243) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Single-Lane |
1998 | Opened November 1998. |
|
Ellicott City,
MD Howard United States |
Snowden River Pkwy./MD 100 WB Ramps (39.21233, -76.79544) |
Roundabout Existing |
All-Way Yield Metering Signal |
3 Approaches 0 Driveways |
Freeway Ramps Single-Lane |
1998 | Opened November 1998. Metering signal on Snowden River Pkwy approach. |
|
Ellicott City,
MD Howard United States |
MD 104 (Waterloo Rd.)/MD 100 WB Ramps (39.22470, -76.80600) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Multilane (2 Lane) |
1999 | |
|
Arcata,
CA Humboldt United States |
Guintoli Ln./US 101 NB Ramps (40.90492, -124.08510) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Single-Lane |
2005 | |
|
Kingston,
NY Ulster United States |
I-587/Rte. 28/I-87/Washington Ave. (41.94362, -74.02840) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways |
Freeway Ramps Multilane (2 Lane) |
2000 | A 600 ft diameter traffic circle was replaced by 200 ft diameter roundabout. At Exit 19 from I-87. I-587 terminates in roundabout. |
|
Green Bay,
WI Brown United States |
W. Mason St. (STH 32-STH 54)/US 41 NB Ramps (44.52415, -88.08103) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Multilane (3+ Lane) |
2012 | Series of 3 roundabouts. Opened August 31, 2012. |
|
Topeka,
KS Shawnee United States |
46th St./US 75 Ramps (39.12934, -95.71959) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways |
Freeway Ramps Single-Lane |
2002 | Roundabout under structure as part of single-point interchange. Elliptical roundabout. Original intersection was at grade. Completed November 2002. |
|
Lewisville,
NC Forsyth United States |
Concord Church Rd./US 421 SB Ramp/Williams Rd. (36.08978, -80.43072) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Single-Lane |
2000 | Solved capacity problem. Previously controlled by one-way stop |
|
Anchorage,
AK Anchorage United States |
Dowling Rd./New Seward Hwy SB Ramps (61.16636, -149.85780) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Multilane (2 Lane) |
2004 | Previously controlled by one-way stop |
|
Anchorage,
AK Anchorage United States |
Dowling Rd./New Seward Hwy NB Ramps (61.16637, -149.85520) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Multilane (2 Lane) |
2004 | Spiral striping. |
|
De Pere,
WI Brown United States |
Scheuring Rd. (CTH F)/US 41 NB Ramps (44.43074, -88.10989) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Multilane (2 Lane) |
2011 | Series of 6 roundabouts. Opened September 2011. Circular central island. |
|
Topeka,
KS Shawnee United States |
Rice Rd./I-70 WB Ramps/Sycamore Dr. (39.03610, -95.62310) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways |
Freeway Ramps Single-Lane |
2000 | Part of a major realignment of I-70 and K-4. Sycamore Drive is one way with two westbound lanes (into the roundabout). Partial cloverleaf AB interchange type. Completed October 2000. |
|
Topeka,
KS Shawnee United States |
Rice Rd./I-70 EB Ramps/Cyprus Drive (39.03190, -95.62320) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways |
Freeway Ramps Single-Lane |
2000 | Part of a major realignment of I-70 and K-4. Cyprus Drive is One Way Eastbound (away from the roundabout). Partial cloverleaf AB interchange type. Completed October 2000. |
|
Green Bay,
WI Brown United States |
W. Mason St. (STH 32-STH 54)/US 41 SB Ramps (44.52418, -88.08284) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Multilane (3+ Lane) |
2012 | Series of 3 roundabouts. Opened August 31, 2012. |
|
St. George,
UT Washington United States |
E. Brigham Rd./I-15 NB Ramps (37.05939, -113.58350) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways |
Freeway Ramps Single-Lane |
2006 | Raindrop-shaped interchange terminal. |
|
Richland,
WA Benton United States |
Steptoe Dr./SR 240 EB Ramps/Columbia Park Trl. (46.23906, -119.24600) |
Roundabout Existing |
All-Way Yield None |
5 Approaches 0 Driveways |
Freeway Ramps Multilane (2 Lane) |
2007 | 5th leg is on-ramp to SR 240. Opened November 2007. Previously controlled by two-way stop |
|
Scaggsville,
MD Howard United States |
MD 216/US 29 SB Ramps (39.14562, -76.90418) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways |
Freeway Ramps Multilane (2 Lane) |
2001 | Series of 4 roundabouts. |
|
Scaggsville,
MD Howard United States |
MD 216/US 29 NB Ramps/Ice Crystal Dr. (39.14476, -76.89799) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways |
Freeway Ramps Multilane (2 Lane) |
2001 | Series of 4 roundabouts. |
|
Millington,
MD Kent United States |
MD 291/US 301 SB Ramps (39.26463, -75.86641) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways |
Freeway Ramps Single-Lane |
1999 | Opened August 1999. |
|
Millington,
MD Kent United States |
MD 291/US 301 NB Ramps (39.26386, -75.86260) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways |
Freeway Ramps Single-Lane |
1999 | Opened August 1999. |
|
Phoenix,
AZ Maricopa United States |
Happy Valley Rd./I-17 SB Ramps (33.71301, -112.12000) |
Roundabout Existing |
All-Way Yield None |
5 Approaches 0 Driveways |
Freeway Ramps Multilane (2 Lane) |
2002 | Revised 2005. |
|
Frisco,
CO Summit United States |
SH 9/I-70 WB Ramps (39.59339, -106.09700) |
Roundabout Existing |
All-Way Yield None |
5 Approaches 0 Driveways |
Freeway Ramps Single-Lane |
2000 | Highway ref. pt. 70-202.35. |
|
Gig Harbor,
WA Pierce United States |
Borgen Blvd./SR 16 SB Ramps (47.35868, -122.61610) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways |
Freeway Ramps Single-Lane |
2004 | Opened March 2004. |
|
De Pere,
WI Brown United States |
Scheuring Rd. (CTH F)/US 41 SB Ramps (44.43050, -88.11402) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Multilane (2 Lane) |
2011 | Series of 6 roundabouts. Opened September 2011. |
|
Arcata,
CA Humboldt United States |
Guintoli Ln./US 101 SB Ramps (40.90400, -124.08920) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Single-Lane |
2005 | |
|
Newton,
KS Harvey United States |
Broadway St./I-135 Ramps (38.05000, -97.32250) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways |
Freeway Ramps Single-Lane |
2003 | Single-point interchange. Near roundabout interchange at I-135 & 1st Street. Roundabout completed January 2002, ramps from I-135 to the roundabout reopened March 2002. Eliptical structure incorporating both NB and SB ramps. Previously controlled by one-way stop |
|
Gig Harbor,
WA Pierce United States |
Borgen Blvd./SR 16 NB Ramps/Burnham Dr. (47.35843, -122.61260) |
Roundabout Existing |
All-Way Yield None |
6 Approaches 0 Driveways |
Freeway Ramps Multilane (2 Lane) |
2001 | Oval shaped central island. 6 legged configuration includes a on-ramp (outbound)leg. Central island is used as a roadway storm detention pond. Completed Summer/Fall 2001. Previously controlled by one-way stop |
|
Kaukauna,
WI Outagamie United States |
CTH J/US 41 SB Ramps (44.30645, -88.24948) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Single-Lane |
2010 | Opened October 11, 2010. |
|
Columbia,
MO Boone United States |
Business Loop 70/I-70 WB Ramps/Creasy Springs Rd. (38.96655, -92.35241) |
Roundabout Removed |
All-Way Yield Unknown |
5 Approaches 0 Driveways |
Freeway Ramps Single-Lane |
1996 | First roundabout in Missouri by Missouri DOT. Originally built in 1996 per article: https://www.voxmagazine.com/news/all-about-roundabouts-in-columbia/article_93724b2b-8b20-5228-b4de-315c5c3d2004.html. Replaced with roundabout to immediate west. |
|
Carson City,
NV Carson City United States |
Arrowhead Dr./US 395 SB Ramp (39.19810, -119.77540) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways |
Freeway Ramps Single-Lane |
2002 | Future SB on-ramp for Carson City Freeway (U.S. 395). Overpass & roundabouts completed in 2002 (freeway & ramp construction still pending as of 11/2002). |
|
Carson City,
NV Carson City United States |
Arrowhead Dr./I-580 NB Ramps/Imus Rd. (39.19840, -119.77380) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways |
Freeway Ramps Single-Lane |
2002 | NB off-ramp for Carson City Freeway (I-580/U.S. 395) and extension of Imus Road. Overpass & roundabouts completed in 2002. |
|
Sterling Heights,
MI Macomb United States |
Van Dyke Ave. (M-53)/18 1/2 Mile Rd. (42.60148, -83.03119) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways |
Freeway Ramps Multilane (2 Lane) |
2005 | Completed June 2005. |
|
Avon,
CO Eagle United States |
William J Post Blvd./I-70 WB Ramps (39.62759, -106.49460) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Multilane (2 Lane) |
2003 | |
|
Avon,
CO Eagle United States |
William J Post Blvd./I-70 EB Ramps (39.62714, -106.49610) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Multilane (2 Lane) |
2003 | |
|
Hanover,
MD Anne Arundel United States |
Arundel Mills Blvd./MD 295 NB Ramps (39.15573, -76.74459) |
Roundabout Removed |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Multilane (2 Lane) |
2002 | |
|
Hanover,
MD Anne Arundel United States |
Arundel Mills Blvd./MD 295 SB Ramps (39.15677, -76.74617) |
Roundabout Removed |
All-Way Yield None |
2 Approaches 0 Driveways |
Freeway Ramps Multilane (2 Lane) |
2002 | |
|
Jessup,
MD Howard United States |
Canine Rd./MD 32 EB Ramps (39.10101, -76.76953) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Single-Lane |
2001 | |
|
Truckee,
CA Nevada United States |
Hwy 89/I-80 EB Ramps (39.32243, -120.20770) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Multilane (2 Lane) |
2005 | |
|
Kaukauna,
WI Outagamie United States |
CTH J/US 41 NB Ramps (44.30463, -88.24939) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Single-Lane |
2010 | Opened October 11, 2010. |
|
Advance,
NC Davie United States |
NC 801/I-40 EB Ramps (36.00655, -80.44083) |
Roundabout Removed |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Single-Lane |
2002 | Developer-built "temporary" intersection fix. Previously controlled by one-way stop |
|
St. George,
UT Washington United States |
E. Brigham Rd./I-15 SB Ramps/Pioneer Rd. (37.05999, -113.58560) |
Roundabout Existing |
All-Way Yield None |
6 Approaches 0 Driveways |
Freeway Ramps Multilane (2 Lane) |
2006 | Combines interchange ramps and frontage road. |
|
Newton,
KS Harvey United States |
First St./I-135 Ramps (38.04250, -97.32240) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways |
Freeway Ramps Single-Lane |
2003 | Single-point interchange. Previously controlled by one-way stop |
|
Truckee,
CA Nevada United States |
Hwy 89/I-80 WB Ramps (39.32386, -120.20760) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Multilane (2 Lane) |
2005 | |
|
Acoma Indian Reservation,
NM McKinley United States |
SH 30/I-40 WB Ramps (35.07505, -107.56110) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps Unknown |
2010 | Series of 3 roundabouts |
|
Chattanooga,
TN Hamilton United States |
SR 153 NB Ramps/Lake Resort Dr. (35.10986, -85.22842) |
Roundabout Existing |
All-Way Yield Unknown |
3 Approaches 0 Driveways |
Freeway Ramps Multilane (2 Lane) |
2006 | At new intersection with new bridge and alignment of Lake Resort Drive. Former intersection was ~800 to the south. Non-symetric design. Some motions have two lanes. Previously controlled by signal |