City,
State County Country |
Intersection (Lat, Lng) |
Type Status |
Control Type / Other Control Type | Approaches / Driveways / ICD (m) |
Functional Class / LaneType |
Year Completed | Comments |
---|---|---|---|---|---|---|---|
Long Beach,
CA Los Angeles Co. United States |
Los Alamitos Circle (Hwy. 1 / Lakewood Blvd. / Los Coyotes Diagonal) (33.78989, -118.14250) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 137.1597 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
1993 | Traffic circle conversion. Modified in 2020 to reduce lanes. 21442 |
Las Vegas (Summerlin),
NV Clark Co. United States |
Town Center Dr. / Hualapai Way (36.17850, -115.31770) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 70.1040 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
1990 | Completed March 1990. Modified 2003 to reduce from three-lane entries to two-lane entries with add-lane right-turn bypasses on all legs. ICD estimated from Google Maps linework. 21442 |
Las Vegas (Summerlin),
NV Clark Co. United States |
Town Center Dr. / Village Center Cir. / Library Hills Dr. (36.18960, -115.30360) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 91.4400 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
1990 | Completed March 1990. Modified 2010 to reduce lane configuration. 21442 |
Boca Raton,
FL Palm Beach Co. United States |
SW 18th St. / Juana Rd. (SW 12th Ave.) (26.33206, -80.11059) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 48.7680 |
Other (At-Grade) Single-Lane |
Raised splitter islands on SW 18th St., painted splitter islands on Juana Rd.. Flashing warning beacon on eastbound SW 18th St. approach. Year Completed unknown (before 1985). | |
Vail,
CO Eagle Co. United States |
Vail Rd. / I-70 WB Ramps / North Frontage Rd. / Spraddle Cr. Rd. (39.64477, -106.37770) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 36.5760 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
1995 | Raindrop-shaped central island. |
Vail,
CO Eagle Co. United States |
Vail Rd. / I-70 EB Ramps / South Frontage Rd. (39.64355, -106.37810) |
Roundabout Existing |
All-Way Yield None |
5 Approaches 0 Driveways 59.4360 |
Other (At-Grade) Multilane (2 Lane, 2x2 max) |
1995 | Completed October 1995. Circular central island. |
Lothian,
MD Anne Arundel Co. United States |
MD 2 / MD 408 / MD 422 (38.82973, -76.61590) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 28.8423 |
Other (At-Grade) Single-Lane |
1995 | Completed October 1995. ICD estimated from Google Maps linework. |
Elkton,
MD Cecil Co. United States |
MD 213 (Fair Hill Rd.) / Leeds Rd. / Elk Mill Rd. (Lanzi Circle) (39.66364, -75.85529) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 34.0178 |
Other (At-Grade) Single-Lane |
1995 | Previously controlled by two-way stop. Functional Class: Arterial ICD estimated from Google Maps linework. |
Cearfoss,
MD Washington Co. United States |
MD 63 / MD 58 / MD 494 (Cearfoss Pike) (39.70017, -77.77593) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 35.0520 |
Other (At-Grade) Single-Lane |
1995 | Completed December 1995. |
Towson,
MD Baltimore Co. United States |
MD 45 / MD 146 / Joppa Rd. / Allegheny Ave. (39.40185, -76.60230) |
Roundabout Existing |
All-Way Yield None |
5 Approaches 0 Driveways 47.9892 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
1998 | Opened October 1998. Exit striping retrofitted to roundabout after opening. Hotdog/racetrack shape. ICD estimated from Google Maps linework. 21442 |
West Palm Beach,
FL Palm Beach Co. United States |
S. Quadrille Blvd. (El Campeon Blvd.) / Fern St. (26.71040, -80.05505) |
Roundabout Removed |
All-Way Yield Unknown |
4 Approaches 0 Driveways 30.4800 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
1997 | Replaced with TWSC 1995-1999; signalized in 2019. |
Daytona Beach,
FL Volusia Co. United States |
Seabreeze Circle (Seabreeze Bridge / Mason Ave. / Ballough Dr.) (29.22941, -81.02484) |
Rotary Removed |
All-Way Yield Unknown |
0 Approaches 0 Driveways 42.7326 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
1997 | Replaced with construction of new Seabreeze Bridge. Year Completed estimated (1995-1999). ICD estimated from Google Maps linework. |
Lake Worth,
FL Palm Beach Co. United States |
SR 802 (Lucerne Ave. - Lake Ave.) / A St. (26.61670, -80.06500) |
Roundabout Existing |
All-Way Yield Pedestrian Signal (red-yellow-green to drivers) |
4 Approaches 0 Driveways 57.9120 |
Other (At-Grade) Multilane (2 Lane, 2x1 max) |
2002 | ICD = 190 ft x 140 ft. |
Naples,
FL Collier Co. United States |
8th St. S / 12th Ave. S (26.13267, -81.79491) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 18.2281 |
Other (At-Grade) Single-Lane |
1996 | Installed for community enhancement. ICD estimated from Google Maps linework. |
Naples,
FL Collier Co. United States |
7th St. N. / 3rd Ave. N. (26.15530, -81.80524) |
Traffic Calming Circle Existing |
All-Way Yield None |
4 Approaches 0 Driveways 9.6483 |
Other (At-Grade) Single-Lane |
1998 | Installed for traffic calming. Detailed traffic volume, speed data available. ICD estimated from Google Maps linework. |
Tavares,
FL Lake Co. United States |
Main St. / Disston Ave. / Lake Dora Dr. (28.80215, -81.72475) |
Roundabout Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 20.9315 |
Other (At-Grade) Single-Lane |
1996 | Railroad tracks running along edge of central island. RR unprotected, train frequency 1-2/wk, 10 mph. ICD estimated from Google Maps linework. |
Clovis,
NM Curry Co. United States |
Hwy 245 (Llano Estacado Blvd.) / Norris St. (34.43384, -103.17830) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 44.3276 |
Other (At-Grade) Single-Lane |
2006 | Completed February 27, 2006. Website: http://www.cityofclovis.org/roundabout/roundabout.htm ICD estimated from Google Maps linework. |
Taneytown,
MD Carroll Co. United States |
MD 140 / MD 832 / Antrim Blvd. (39.64809, -77.15468) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 44.1960 |
Other (At-Grade) Single-Lane |
1996 | Completed August 1996. Curbs set for double lane, striped for single outer circulating lane. |
Hilton Head,
SC Beaufort Co. United States |
Whooping Crane Way / Main St. (32.21647, -80.72187) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 44.4598 |
Other (At-Grade) Single-Lane |
1996 | Completed February 1996. ICD estimated from Google Maps linework. |
Addison,
TX Dallas Co. United States |
Addison Cir. / Quorum Dr. (32.96138, -96.82592) |
Other Existing |
Unknown Unknown |
4 Approaches 0 Driveways 54.8640 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
1997 | . |
Montpelier,
VT Washington Co. United States |
Keck Circle (Main St. / Spring St.) (44.26283, -72.57178) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 25.6594 |
Other (At-Grade) Single-Lane |
1995 | Main Street Middle School located one block NE of roundabout. ICD estimated from Google Maps linework. |
Sarasota,
FL Sarasota Co. United States |
St. Armands Circle: SR 780 / Boulevard of the Presidents / John Ringling Blvd. (27.31842, -82.57722) |
Other Existing |
Other None |
5 Approaches 0 Driveways 128.0157 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
Pedestrian access to central island; parking along circulatory roadway. Shopping district. Completed 1940? | |
Sarasota,
FL Sarasota Co. United States |
South Gate Circle (Tuttle Ave. / Siesta Dr.) (27.30536, -82.51414) |
Other Existing |
All-Way Yield None |
4 Approaches 0 Driveways 120.9825 |
Other (At-Grade) Unknown |
Yield control on circulatory roadway. ICD estimated from Google Maps linework. | |
Naples,
FL Collier Co. United States |
7th St. N. / 7th Ave. N. (26.15619, -81.79971) |
Traffic Calming Circle Existing |
All-Way Yield None |
4 Approaches 0 Driveways 22.5125 |
Other (At-Grade) Single-Lane |
1998 | Installed for traffic calming. Detailed traffic volume, speed data available. Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework. |
Naples,
FL Collier Co. United States |
7th St. N. / 11th Ave. N. (26.15712, -81.79420) |
Traffic Calming Circle Existing |
All-Way Yield None |
4 Approaches 0 Driveways 13.7160 |
Other (At-Grade) Single-Lane |
1996 | Installed for traffic calming. Painted splitter islands. Detailed traffic volume, speed data available. ICD estimated from Google Earth. |
Naples,
FL Collier Co. United States |
7th St. N. / 12th Ave. N. (26.15734, -81.79282) |
Traffic Calming Circle Existing |
All-Way Yield None |
4 Approaches 0 Driveways 13.7160 |
Other (At-Grade) Single-Lane |
1996 | Installed for traffic calming. Detailed traffic volume, speed data available. ICD estimated from Google Earth. |
Hollywood,
FL Broward Co. United States |
Hollywood Blvd. / Rainbow Dr. (26.01050, -80.18360) |
Other Existing |
One-Way/Two-Way Stop None |
4 Approaches 0 Driveways 274.3200 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
Uncontrolled mainline, stop-control on side street. Building and parking in central island. | |
Hollywood,
FL Broward Co. United States |
Hollywood Blvd. / 26th Ave. (26.01110, -80.15920) |
Signalized Roundabout/Circle Existing |
Signal None |
4 Approaches 0 Driveways 200.7172 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
Signal access to parking and building in center of circle. ICD estimated from Google Maps linework. | |
Hollywood,
FL Broward Co. United States |
Hollywood Blvd. / S. Federal Hwy. (US 1) / Harrison St. / Tyler St. (26.01150, -80.14300) |
Signalized Roundabout/Circle Existing |
Signal None |
7 Approaches 0 Driveways 70.8411 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
Signalized access, parking area in central island. ICD estimated from Google Maps linework. | |
Modesto,
CA Stanislaus Co. United States |
Chandon Dr. / Calero Dr. (37.67642, -120.93380) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 27.4132 |
Other (At-Grade) Single-Lane |
2002 | ICD estimated from Google Maps linework. |
Modesto,
CA Stanislaus Co. United States |
Bowen Ave. / Fremont Ave. (37.67470, -121.00260) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 18.9061 |
Other (At-Grade) Single-Lane |
2002 | Previously controlled by twsc ICD estimated from Google Maps linework. |
Stuart,
FL Martin Co. United States |
S. Dixie Hwy / SR 76 / SR A1A (27.19767, -80.25266) |
Other Existing |
Other None |
0 Approaches 0 Driveways 26.5569 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
Railroad crossing next to circle. ICD estimated from Google Maps linework. | |
Stuart,
FL Martin Co. United States |
N. Colorado Ave. / E. Osceola St. (27.19860, -80.25300) |
Traffic Calming Circle Existing |
All-Way Yield None |
4 Approaches 0 Driveways 32.9303 |
Other (At-Grade) Single-Lane |
ICD estimated from Google Maps linework. | |
Vail,
CO Eagle Co. United States |
Chamonix Rd. / I-70 WB Ramps / North Frontage Rd. (39.62828, -106.42120) |
Roundabout Existing |
All-Way Yield None |
5 Approaches 0 Driveways 45.7200 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max) |
1997 | |
Vail,
CO Eagle Co. United States |
Chamonix Rd. / I-70 EB Ramps / South Frontage Rd. (39.62753, -106.42020) |
Roundabout Existing |
All-Way Yield None |
5 Approaches 0 Driveways 45.7200 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max) |
1997 | |
Avon,
CO Eagle Co. 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 42.6720 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max) |
1997 | Highway ref. pt. 70-166.62. Raindrop shaped. |
Avon,
CO Eagle Co. United States |
Avon Rd. / I-70 EB Ramps (39.63683, -106.52170) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 44.1960 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max) |
1997 | Highway ref. pt. 70-166.62. Raindrop shaped. |
Avon,
CO Eagle Co. United States |
Avon Rd. / Beaver Creek Blvd. (39.63528, -106.52220) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 68.5800 |
Other (At-Grade) Multilane (2 Lane, 2x2 max) |
1997 | Right-turn-only lane on north leg. Elliptical shaped. Skewed intersection. ICD = 225 ft x 160 ft. |
Avon,
CO Eagle Co. United States |
Avon Rd. / Benchmark Rd. (39.63425, -106.52220) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 45.7200 |
Other (At-Grade) Multilane (2 Lane, 2x2 max) |
1997 | Originally had raindrop shape with locked gate access across south leg for emergency vehicles only. Redesigned and reopened May 2007 with full access. 21442 |
Avon,
CO Eagle Co. United States |
Avon Rd. / US 6 (39.63110, -106.52260) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 45.7200 |
Other (At-Grade) Multilane (2 Lane, 2x2 max) |
1997 | Highway ref. pt. 6-170.04. Right-turn-only lane on east leg. |
Nederland,
CO Boulder Co. United States |
SH 72 / SH 119 / 2nd St. / Bridge St. (39.96261, -105.51030) |
Roundabout Existing |
All-Way Yield None |
5 Approaches 0 Driveways 23.8006 |
Other (At-Grade) Single-Lane |
1995 | Opened June 1995. Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework. |
Tampa,
FL Hillsborough Co. United States |
North Blvd. / Country Club Dr. (28.05466, -82.46759) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 14.7559 |
Other (At-Grade) Single-Lane |
1996 | Completed June 1996. ICD estimated from Google Maps linework. |
Winston-Salem,
NC Forsyth Co. United States |
Salem Rd. / Old Salem Rd. / S. Main St. (36.08215, -80.24125) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 64.0080 |
Other (At-Grade) Multilane (2 Lane, 2x1 max) |
2005 | TIP Project U-2926. Right-turn-only lanes on east and west legs. |
Scottsdale,
AZ Maricopa Co. United States |
N. 64th St. / E. Lafayette Blvd. (33.49474, -111.94330) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 21.9119 |
Other (At-Grade) Single-Lane |
2000 | ICD estimated from Google Maps linework. |
Olmos Park,
TX Bexar Co. United States |
Olmos Dr. / El Prado Dr. / McCullough Ave. (29.47094, -98.49162) |
Roundabout Existing |
All-Way Yield None |
5 Approaches 0 Driveways 32.0037 |
Other (At-Grade) Single-Lane |
1996 | Completed July 1996. |
Manchester,
VT Bennington Co. United States |
Rte. 7A / Equinox (Grand Union) (43.17309, -73.06181) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 26.1304 |
Other (At-Grade) Single-Lane |
1997 | Roundabout is in a retail/outlet district in a resort area. VT 7-A is posted as a Historic Highway and is the local business route, while the parallel US 7 is a two-lane, limited access bypass that carries through truck traffic. Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework. |
Annapolis,
MD Anne Arundel Co. United States |
Gateway Circle [MD 450 (West St.) / Taylor Ave. / Spa Rd.] (38.97630, -76.50486) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 54.8640 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
1999 | Elliptical shaped. ICD = 180 ft x 160 ft. Opened December 1999. |
De Pere,
WI Brown Co. United States |
Scheuring Rd. (CTH F) / US 41 NB Ramps (44.43074, -88.10989) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 53.3400 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max) |
2011 | Series of 6 roundabouts. Yield-controlled right-turn bypass lane on south leg; merging right-turn bypass lane on east leg. Opened September 2011. Circular central island. |
Acworth-Kennesaw,
GA Cobb Co. United States |
W Sandtown Rd. / Villa Rica Rd. (33.92703, -84.63775) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 35.0520 |
Other (At-Grade) Single-Lane |
2008 | |
Durango,
CO La Plata Co. United States |
Jenkins Ranch Rd. / Lizard Head (south) (37.28605, -107.84710) |
Roundabout Existing |
Unknown Unknown |
3 Approaches 0 Driveways 24.7061 |
Other (At-Grade) Single-Lane |
2004 | ICD estimated from Google Maps linework. |
Durango,
CO La Plata Co. United States |
Jenkins Ranch Rd. / Lizard Head (north) (37.28920, -107.84310) |
Roundabout Existing |
Unknown Unknown |
3 Approaches 0 Driveways 27.5556 |
Other (At-Grade) Single-Lane |
2004 | ICD estimated from Google Maps linework. |
Ritchie,
MD Prince Georges Co. United States |
Ritchie-Marlboro Rd. / I-95 SB Ramps (38.86894, -76.84738) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 770.9968 |
Freeway Ramps (Grade-Separated) Multilane (3+ Lane) |
2001 | Opening initially with two lanes. Expanded from two lanes to three lanes in 2010. 21442 |
Ritchie,
MD Prince Georges Co. United States |
Ritchie-Marlboro Rd. / I-95 NB Ramps (38.86824, -76.84158) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 67.0560 |
Freeway Ramps (Grade-Separated) Multilane (3+ Lane) |
2001 | Opened initially with two lanes. Expanded from two lanes to three lanes in 2010. 21442 |
Santa Barbara,
CA Santa Barbara Co. United States |
Milpas St. / US 101 NB Ramps / Carpinteria St. (34.42073, -119.67765) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 62.4840 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
2000 | Oblong shaped. ICD = 250 ft x 125 ft. Completed April 2000. Experienced one single-vehicle fatality (date unknown). 11861-05. |
Cottonwood,
AZ Yavapai Co. United States |
AZ 89A / Verde Heights Dr. (34.73999, -112.03740) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 54.8640 |
Other (At-Grade) Multilane (2 Lane, 2x2 max) |
2009 | Series of 5 roundabouts. |
Oshkosh,
WI Winnebago Co. United States |
CTH E (Witzel Ave.) / Koeller St. (44.01805, -88.58098) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 48.7680 |
Other (At-Grade) Multilane (2 Lane, 2x2 max) |
2010 | Opened September 24, 2010. |
Carlsbad,
CA San Diego Co. United States |
Legoland Dr. / Armada Dr. (33.13229, -117.31660) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 41.1480 |
Other (At-Grade) Multilane (2 Lane, 2x2 max) |
1999 | Unstriped circulatory roadway. |
Phoenix,
AZ Maricopa Co. United States |
S. Pointe Pkwy. W / S. Pointe Pkwy. E (33.37649, -111.97210) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 50.8650 |
Other (At-Grade) Single-Lane |
1994 | Before 1997. ICD estimated from Google Maps linework. |
Douglasville,
GA Douglas Co. United States |
SR 5 / SR 166 (33.61361, -84.83688) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 25.8602 |
Other (At-Grade) Single-Lane |
2007 | Fatal crash November 24, 2011. 11861-05. ICD estimated from Google Maps linework. |
(unincorporated),
MD Anne Arundel Co. United States |
Arundel Beach Rd. / Leelyn Dr. (39.07955, -76.54560) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 25.9594 |
Other (At-Grade) Single-Lane |
1999 | ICD estimated from Google Maps linework. |
Brunswick,
MD Frederick Co. United States |
MD 17 / A St. / B St. / Maryland Ave. (39.31433, -77.62807) |
Roundabout Existing |
All-Way Yield None |
5 Approaches 0 Driveways 42.5054 |
Other (At-Grade) Single-Lane |
2000 | ICD estimated from Google Maps linework. |
De Pere,
WI Brown Co. United States |
Scheuring Rd. (CTH F) / US 41 SB Ramps (44.43050, -88.11402) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 56.3880 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max) |
2011 | Series of 6 roundabouts. Opened September 2011. |
Catonsville,
MD Baltimore Co. United States |
MD 372 / Hilltop Rd. / Entrance to UMBC (39.25733, -76.71964) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 35.1417 |
Other (At-Grade) Single-Lane |
1998 | Functional Class: Collector ICD estimated from Google Maps linework. |
Lisbon,
MD Howard Co. United States |
MD 94 / Old Frederick Rd. (Lisbon North) (39.34810, -77.06930) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 26.7839 |
Other (At-Grade) Single-Lane |
1999 | ICD estimated from Google Maps linework. |
Ellicott City,
MD Howard Co. United States |
MD 103 / MD 100 WB Ramps (39.20846, -76.78294) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 33.3154 |
Freeway Ramps (Grade-Separated) Single-Lane |
1998 | Opened November 1998. ICD estimated from Google Maps linework. |
Ellicott City,
MD Howard Co. United States |
MD 103 / MD 100 EB Ramps (39.20733, -76.78243) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 30.5396 |
Freeway Ramps (Grade-Separated) Single-Lane |
1998 | Opened November 1998. ICD estimated from Google Maps linework. |
Ellicott City,
MD Howard Co. United States |
Snowden River Pkwy. / MD 100 WB Ramps (39.21233, -76.79544) |
Roundabout Existing |
All-Way Yield Metering Signal |
3 Approaches 0 Driveways 25.9105 |
Freeway Ramps (Grade-Separated) Single-Lane |
1998 | Opened November 1998. Metering signal on Snowden River Pkwy approach. ICD estimated from Google Maps linework. |
Ellicott City,
MD Howard Co. United States |
MD 104 (Waterloo Rd.) / MD 100 WB Ramps (39.22470, -76.80600) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 45.7200 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max) |
1999 | |
Federalsburg,
MD Caroline Co. United States |
MD 307 / MD 313 / MD 318 (38.68938, -75.78949) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 35.4247 |
Other (At-Grade) Single-Lane |
1999 | Rural, installed for safety reasons Previously controlled by two-way stop ICD estimated from Google Maps linework. |
Portland,
OR Multnomah Co. United States |
SE Ladd Circle (45.50850, -122.64940) |
Other Existing |
Unknown None |
0 Approaches 0 Driveways 92.0689 |
Other (At-Grade) Single-Lane |
ICD estimated from Google Maps linework. | |
Cedar Lake Township,
MN Scott Co. United States |
SH 13 (Langford Ave.) / CR 2 (260th St.) (44.57259, -93.50546) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 45.9429 |
Other (At-Grade) Single-Lane |
2005 | Rural location, intersection of two 55-mph facilities. Previous 2-way stop had 2 fatal crashes and 50 injury crashes in 5 years. Opened to traffic in September 2005. During 12 months after opening, 1 reported crash involving single motorcycle running off road. Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework. |
Mount Rainier,
MD Prince Georges Co. United States |
US 1 / 34th St. / Perry St. (38.93647, -76.96074) |
Roundabout Existing |
All-Way Yield None |
5 Approaches 0 Driveways 41.1480 |
Other (At-Grade) Multilane (2 Lane, 2x1 max) |
2001 | Oval shaped. ICD = 135 ft x 115 ft. |
Lutherville-Timonium,
MD Baltimore Co. United States |
MD 139 (Charles St.) / Bellona Ave. (39.41790, -76.62900) |
Roundabout Removed |
All-Way Yield None |
4 Approaches 0 Driveways 28.9560 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
1999 | Two-lane circulatory roadway across northern half. |
Copley Township,
OH Summit Co. United States |
Ridgewood Rd. / Hametown Rd. (41.11395, -81.66791) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 25.1947 |
Other (At-Grade) Single-Lane |
2006 | Opened August 21, 2006. ICD estimated from Google Maps linework. |
Decatur,
GA DeKalb Co. United States |
N Decatur Rd. / Lullwater Rd. (33.78744, -84.32914) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 27.4320 |
Other (At-Grade) Single-Lane |
2004 | |
Durango,
CO La Plata Co. United States |
Jenkins Ranch Rd. / Ophir Dr. (37.28321, -107.85120) |
Roundabout Existing |
Unknown Unknown |
3 Approaches 0 Driveways 26.6075 |
Other (At-Grade) Single-Lane |
2004 | ICD estimated from Google Maps linework. |
Huntsville,
AL Madison Co. United States |
Old Monrovia Rd. / Providence Main St. / Indian Creek Rd. (34.75765, -86.68776) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 34.3429 |
Other (At-Grade) Single-Lane |
2004 | Single-lane with right-turn only lanes. Built as staged construction with potential to be multilane. ICD estimated from Google Maps linework. |
Camp Verde,
AZ Yavapai Co. United States |
Middle Verde / Cliff Castle (34.60927, -111.86130) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 37.3535 |
Other (At-Grade) Single-Lane |
2005 | ICD estimated from Google Maps linework. |
De Pere,
WI Brown Co. United States |
Grant St. (CTH EE) / Lawrence Dr. (44.44511, -88.09367) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 29.8430 |
Other (At-Grade) Single-Lane |
2008 | Opened September 30, 2008. ICD estimated from Google Maps linework. |
Truckee,
CA Nevada Co. United States |
Donner Pass Rd. / W. River St. / McIver Crossing (39.32510, -120.19200) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 35.1077 |
Other (At-Grade) Single-Lane |
1998 | Fatal crash. 11861-05. Functional Class: Arterial ICD estimated from Google Maps linework. |
Durango,
CO La Plata Co. United States |
Jenkins Ranch Rd. / Kennebec Dr. (37.29216, -107.84010) |
Roundabout Existing |
Unknown Unknown |
4 Approaches 0 Driveways 23.7539 |
Other (At-Grade) Single-Lane |
2003 | ICD estimated from Google Maps linework. |
Dawsonville,
GA Dawson Co. United States |
SR 9E (Lumpkin Campground Rd.) / SR 318 (Dawson Forrest Rd.) (34.35427, -84.05168) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 42.6720 |
Other (At-Grade) Single-Lane |
2006 | |
Oakwood,
GA Hall Co. United States |
Landrum Education Dr. / Frontage Rd. / Mathis Dr. (34.23434, -83.86434) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 35.0520 |
Other (At-Grade) Single-Lane |
2007 | Gainesville College. |
Pearl,
MS Rankin Co. United States |
MS 475 (Airport Rd.) / Old Brandon Rd. (32.29057, -90.07133) |
Roundabout Existing |
Unknown Unknown |
4 Approaches 0 Driveways 34.3273 |
Other (At-Grade) Single-Lane |
1997 | Use of paint to achieve (?) deflection. ICD estimated from Google Maps linework. |
Gorham,
ME Cumberland Co. United States |
US 202 / Rte. 4 / Rte. 237 (43.72846, -70.42525) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 25.0285 |
Other (At-Grade) Single-Lane |
1997 | Previously controlled by two-way stop ICD estimated from Google Maps linework. |
(unincorporated),
MD Prince Georges Co. United States |
Ft. Washington Rd. / Swan Creek Rd. (38.72498, -77.00491) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 25.1576 |
Other (At-Grade) Single-Lane |
1997 | Fourth leg added. Year Completed estimated (before 2001). ICD estimated from Google Maps linework. |
Bel Air,
MD Harford Co. United States |
Tollgate Rd. / Marketplace Dr. (39.52092, -76.35262) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 28.5602 |
Other (At-Grade) Single-Lane |
1996 | Three leg, off-set roundabout - off-set due to lack of r/w on top side of Functional Class: Collector ICD estimated from Google Maps linework. |
Columbia,
MD Howard Co. United States |
Banneker Rd. / Cul-de-sac (39.21141, -76.87041) |
Traffic Calming Circle Existing |
Unknown Unknown |
3 Approaches 0 Driveways 17.5824 |
Other (At-Grade) Single-Lane |
Functional Class: Local ICD estimated from Google Maps linework. | |
Columbia,
MD Howard Co. United States |
Trotter Rd. / South Wind Cir. (39.20956, -76.91891) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 23.1353 |
Other (At-Grade) Single-Lane |
1997 | Functional Class: Collector. Year Completed estimated (1993-2001). ICD estimated from Google Maps linework. |
Topeka,
KS Shawnee Co. United States |
Rice Rd. / I-70 WB Ramps / Sycamore Dr. (39.03610, -95.62310) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 44.5293 |
Freeway Ramps (Grade-Separated) 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. ICD estimated from Google Maps linework. |
Topeka,
KS Shawnee Co. United States |
Rice Rd. / I-70 EB Ramps / Cyprus Drive (39.03190, -95.62320) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 52.8817 |
Freeway Ramps (Grade-Separated) 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. ICD estimated from Google Maps linework. |
Green Bay,
WI Brown Co. 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 45.9811 |
Freeway Ramps (Grade-Separated) Multilane (3+ Lane) |
2012 | Series of 3 roundabouts. Opened August 31, 2012. ICD estimated from Google Maps linework. |
Brattleboro,
VT Windham Co. United States |
Rte 9 / Rte 5 (42.88500, -72.55670) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 51.8160 |
Other (At-Grade) Multilane (2 Lane, 2x2 max) |
1999 | Adjacent to I-89. Heavy truck volume (>7%). |
Green Bay,
WI Brown Co. 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 43.4266 |
Freeway Ramps (Grade-Separated) Multilane (3+ Lane) |
2012 | Series of 3 roundabouts. Opened August 31, 2012. ICD estimated from Google Maps linework. |
Lakewood,
CO Jefferson Co. United States |
Arbutus Dr. / Red Rocks Community College (39.71903, -105.14840) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 36.7465 |
Other (At-Grade) Single-Lane |
2001 | Functional Class: Collector ICD estimated from Google Maps linework. |
St. Simons,
GA Glynn Co. United States |
Frederica Rd. / Lawrence Rd. (31.21650, -81.37550) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 40.8563 |
Other (At-Grade) Single-Lane |
2006 | ICD estimated from Google Maps linework. |
Wall,
NJ Monmouth Co. United States |
NJ 35 / Atlantic Ave. (Brielle Circle) (40.13232, -74.06525) |
Rotary Existing |
Other Unknown |
4 Approaches 0 Driveways 129.6649 |
Other (At-Grade) Single-Lane |
Traffic circle conversion ICD estimated from Google Maps linework. | |
Southampton,
NJ Burlington Co. United States |
US 206 / NJ 70 (Red Lion Circle) (39.88715, -74.74104) |
Rotary Existing |
Unknown Unknown |
4 Approaches 0 Driveways 136.5464 |
Other (At-Grade) Single-Lane |
Traffic circle conversion Functional Class: Arterial ICD estimated from Google Maps linework. | |
Washington,
DC N/A Co. United States |
Dupont Circle (Mass Ave. / Conn. Ave. / New Hampshire Ave.19th St. / P St.) (38.90965, -77.04344) |
Signalized Roundabout/Circle Existing |
Signal None |
10 Approaches 0 Driveways 137.5441 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
ICD estimated from Google Maps linework. | |
Washington,
DC N/A Co. United States |
Washington Circle (Penn. Ave. / New Hampshire Ave. / 23rd St. / K St.) (38.90252, -77.05010) |
Signalized Roundabout/Circle Existing |
Signal None |
8 Approaches 0 Driveways 119.8984 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
ICD estimated from Google Maps linework. |