Roundabouts Database Index

29411 Results

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City, State County Country	Intersection (Lat, Lng)	Type Status	Control Type / Other Control Type	Approaches / Driveways / ICD (m)	Functional Class / LaneType	Year Completed	Comments
O'Fallon, MO St. Charles Co. United States	Phoenix Pkwy. / Redhawk Pkwy. / Red Hawk Pl. (38.74510, -90.73630)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5341	Other (At-Grade) Single-Lane	2001	Year Completed estimated (1996-2002). ICD estimated from Google Maps linework.
O'Fallon, MO St. Charles Co. United States	Phoenix Pkwy. / Phoenix Dr. / Boardwalk Place Dr. (38.74122, -90.73747)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5359	Other (At-Grade) Single-Lane	2001	Year Completed estimated (1996-2002). ICD estimated from Google Maps linework.
Bennington, NE Douglas Co. United States	N 152nd St. / Vane St. (41.32290, -96.15098)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 26.0113	Other (At-Grade) Single-Lane	2001	Year Completed estimated (1999-2003). ICD estimated from Google Maps linework.
Omaha, NE Douglas Co. United States	N 172nd St. / Locust St. (41.28520, -96.18319)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 22.4365	Other (At-Grade) Single-Lane	2001	Year Completed estimated (1999-2003). ICD estimated from Google Maps linework.
Omaha, NE Douglas Co. United States	N 21st St. / Charles St. (41.27319, -95.94354)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.5192	Other (At-Grade) Single-Lane	2001	Year Completed estimated (1999-2003). ICD estimated from Google Maps linework.
Greensboro, NC Guilford Co. United States	Airpark Rd. / Albert Pick Rd. (36.07486, -79.94894)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.8900	Other (At-Grade) Single-Lane	2001	Year Completed estimated (1999-2002). ICD estimated from Google Maps linework.
Greensboro, NC Guilford Co. United States	Airpark Rd. / Abert Pick Rd. / Gallimore Dairy Rd. (36.07414, -79.94649)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.9250	Other (At-Grade) Single-Lane	2001	Year Completed estimated (1999-2002). ICD estimated from Google Maps linework.
Brandon, MB Manitoba Canada	Maryland Ave. / Magnolia Dr. (49.81997, -99.94982)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.0697	Other (At-Grade) Single-Lane	2001	Year Completed estimated (before 2004). ICD estimated from Google Maps linework.
Parker, CO Douglas Co. United States	Crown Crest Blvd. / Cottonwood Dr. (39.55051, -104.77237)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 50.6497	Other (At-Grade) Multilane (2 Lane, unspecified)	2001	Year Completed estimated (1999-2002). ICD estimated from Google Maps linework.
Castle Pines, CO Douglas Co. United States	Daniels Gate Dr. / Grigs Rd. (39.48770, -104.91860)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.7912	Other (At-Grade) Single-Lane	2001	Year Completed estimated (1999-2002). ICD estimated from Google Maps linework.
Fleming Island, FL Clay Co. United States	Town Center Blvd. / Radar Rd. (30.09197, -81.71185)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 37.2009	Other (At-Grade) Single-Lane	2001	Elliptical shape. Year Completed estimated (1999-2002). ICD estimated from Google Maps linework.
Coeur D'Alene, ID Kootenai Co. United States	W Hanley Ave. / N Courcelles Pkwy. (47.73020, -116.81799)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.9366	Other (At-Grade) Single-Lane	2001	Year Completed estimated (1998-2004). ICD estimated from Google Maps linework.
Norfolk, NE Madison Co. United States	W Pasewalk Ave. / S 7th St (42.02605, -97.41686)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 25.7287	Other (At-Grade) Single-Lane	2001	At-grade rail crossing on east leg. Year Completed estimated (1999-2002). ICD estimated from Google Maps linework.
Westfield, IN Hamilton Co. United States	Brookhollow Dr. / Slippery Rock Ct. / Spillwater Way (40.02443, -86.10150)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 49.3874	Other (At-Grade) Single-Lane	2001	No splitter islands. Year Completed estimated (1999-2003). ICD estimated from Google Maps linework.
Clovis, CA Fresno Co. United States	N Timmy Ave. / W Heritage Ave. (36.85883, -119.72723)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 21.0232	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Clovis, CA Fresno Co. United States	N Timmy Ave. / W Quincy Ave. (36.85710, -119.72725)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 26.7574	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Clovis, CA Fresno Co. United States	N Timmy Ave. / W Enterprise Ave. (36.85538, -119.72726)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 22.9355	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Prescott, AZ Yavapai Co. United States	E Smoke Tree Ln. / Northridge Dr. / Solstice Dr. (34.58711, -112.44239)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.3132	Other (At-Grade) Single-Lane	2001	Year Completed estimated (1992-2002). ICD estimated from Google Maps linework.
Markham, ON York Canada	Swan Lake Blvd. / Lakeside Vista Way. (43.89623, -79.25077)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 38.0000	Other (At-Grade) Single-Lane	2001	Year Completed estimated (2000-2001).
Amesbury, MA Essex Co. United States	Friend St / School St (Rte 150) / Allens Ct (42.85615, -70.93410)	Roundabout Existing	Other None	4 Approaches 0 Driveways 26.2656	Other (At-Grade) Single-Lane	2001	North leg stop-controlled. Fire station on south leg. Resurfaced on 2017. ICD estimated from Google Maps linework.
Kamloops, BC Thompson-Nicola Canada	Qu'Appelle Blvd. / Highland Rd. (50.66113, -120.26216)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 24.2269	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Suwanee, GA Gwinnett Co. United States	Summit Gate Dr. / Sentry Ridge Crossing (34.05950, -84.02453)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 30.6729	Other (At-Grade) Single-Lane	2001	No splitter islands. Year Completed estimated (1999-2002). ICD estimated from Google Maps linework.
Irvine, CA Orange Co. United States	Sand Canyon Ave. / Shady Canyon Dr. (33.65462, -117.78100)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 104.3859	Other (At-Grade) Multilane (2 Lane, unspecified)	2001	ICD estimated from Google Maps linework.
Miami, FL Miami-Dade Co. United States	SW 16th St. / University Dr. (25.75435, -80.37009)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.1950	Other (At-Grade) Multilane (2 Lane, unspecified)	2001	ICD estimated from Google Maps linework.
Riverdale, UT Weber Co. United States	River Park Dr. / Sams Club access (41.17197, -112.00210)	Roundabout Existing	All-Way Yield Other	3 Approaches 0 Driveways 53.3400	Other (At-Grade) Multilane (2 Lane, unspecified)	2001	Raised crosswalks.
Riverdale, UT Weber Co. United States	River Park Dr. / 900 W (41.17318, -111.99900)	Roundabout Existing	All-Way Yield Other	3 Approaches 0 Driveways 53.3400	Other (At-Grade) Multilane (2 Lane, unspecified)	2001	Raised crosswalks.
Mooresville, NC Iredell Co. United States	Brawley School Rd. / The Point Dr. (35.53482, -80.92054)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 83.5834	Other (At-Grade) Multilane (2 Lane, unspecified)	2001	Between 1998 and 2003 ICD estimated from Google Maps linework.
Gainesville, VA Prince William Co. United States	Turtle Point Dr. / Spyglass Hill Loop (38.78095, -77.65189)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 31.6552	Other (At-Grade) Single-Lane	2001	Functional Class: Local ICD estimated from Google Maps linework.
Lincoln, NE Lancaster Co. United States	Fallbrook Blvd. / Tallgrass Pkwy (40.87793, -96.73135)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 65.0188	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Lincoln, NE Lancaster Co. United States	Fallbrook Blvd. / Stonebrook Pkwy (40.87706, -96.72567)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 64.1166	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Lincoln, NE Lancaster Co. United States	N 21st St. / Folkways Blvd. (40.86681, -96.69003)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 17.1606	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Lincoln, NE Lancaster Co. United States	N 49th St. / Francis St. (40.83137, -96.65235)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 20.7845	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Lincoln, NE Lancaster Co. United States	Densmore Park (40.74437, -96.70332)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 20.8117	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Roseville, CA Placer Co. United States	Westhills Dr. / Morningstar Dr. / St. Basil Cir. (38.76151, -121.35340)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 32.5951	Other (At-Grade) Single-Lane	2001	Crosswalks adjacent to circle. ICD estimated from Google Maps linework.
Roseville, CA Placer Co. United States	Park Regency Dr. / Hiawatha Dr. / Sharifa Way / Bottlebrush Cir. (38.76105, -121.34870)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.2518	Other (At-Grade) Single-Lane	2001	Crosswalks adjacent to circle. ICD estimated from Google Maps linework.
Roseville, CA Placer Co. United States	Park Regency Dr. / Castlebridge Dr. / Hillingdon St. (38.75455, -121.34680)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 32.5983	Other (At-Grade) Single-Lane	2001	Crosswalks adjacent to circle. ICD estimated from Google Maps linework.
Santa Maria, CA Santa Barbara Co. United States	S. College Dr. / Southside Pkwy. (34.92111, -120.42530)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.0676	Other (At-Grade) Multilane (2 Lane, unspecified)	2001	No circulatory roadway striping. Functional Class: Arterial ICD estimated from Google Maps linework.
Santa Maria, CA Santa Barbara Co. United States	S. College Dr. / E. McCoy Ln. (34.91648, -120.42510)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8427	Other (At-Grade) Multilane (2 Lane, unspecified)	2001	No circulatory roadway striping. Fatal crash October 15, 2009. 11861-05. Functional Class: Arterial ICD estimated from Google Maps linework.
Santa Maria, CA Santa Barbara Co. United States	S. Bradley Rd. / Southside Pkwy. (34.92075, -120.42200)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 47.0056	Other (At-Grade) Multilane (2 Lane, unspecified)	2001	No circulatory roadway striping. Functional Class: Arterial ICD estimated from Google Maps linework.
Cupertino, CA Santa Clara Co. United States	Portal Ave. / Wheaton Dr. (37.32445, -122.01964)	Traffic Calming Circle Existing	All-Way Stop None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2001	Year Completed estimated (2000-2002).
Broomfield, CO Adams Co. United States	Zang St. / (parking lot #1) (39.92782, -105.13320)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 36.6350	Other (At-Grade) Single-Lane	2001	Serves commercial development. ICD estimated from Google Maps linework.
Broomfield, CO Adams Co. United States	Zang St. / (parking lot #2) (39.92641, -105.13170)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 35.7199	Other (At-Grade) Single-Lane	2001	Serves commercial development. ICD estimated from Google Maps linework.
Englewood, CO Arapahoe Co. United States	W. Sheri Ln. / Belleview Park (39.62281, -105.00620)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 42.3174	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Winnipeg, MB Winnipeg Capital Region Canada	Waterfront Dr. / Bannatyne Ave. (49.89712, -97.13358)	Roundabout Existing	Unknown Unknown	0 Approaches 0 Driveways 34.6204	Other (At-Grade) Unknown	2001	ICD estimated from Google Maps linework.
Winston-Salem, NC Forsyth Co. United States	Westview Dr. / Buckingham Rd. (36.09549, -80.28940)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2001	City project. Painted splitter islands.
Marysville, WA Snohomish Co. United States	34th Ave. NE-Quil Ceda Blvd. / Tulalip Casino entrance (48.08801, -122.18560)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 74.9927	Other (At-Grade) Single-Lane	2001	Opened October 2001 as multilane roundabout. Modified April 2014 to reduce to single-lane roundabout with right-turn-only lanes. ICD estimated from Google Maps linework. 21442
New Bern, NC Craven Co. United States	Broad St. / Front St. (35.10776, -77.03563)	Roundabout Existing	Unknown Unknown	3 Approaches 0 Driveways 27.3573	Other (At-Grade) Single-Lane	2001	Part of enhancement project. ICD estimated from Google Maps linework.
Covington, WA King Co. United States	172nd Ave. SE / SE 270th Pl. (47.35939, -122.11240)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.7885	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Dupont, WA Thurston Co. United States	McNeil St. / Gaul Ave. (47.09734, -122.66080)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 26.0174	Other (At-Grade) Single-Lane	2001	Completed May 2001. ICD estimated from Google Maps linework.
Dupont, WA Thurston Co. United States	McNeil St. / Marshall Cir. (47.09618, -122.65520)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 26.8311	Other (At-Grade) Single-Lane	2001	Completed May 2001. ICD estimated from Google Maps linework.
Conyers, GA Rockdale Co. United States	Travis St. / Hardin St. / Okelly St. (33.66432, -84.01964)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 22.8629	Other (At-Grade) Single-Lane	2001	Year Completed estimated (1999-2002). ICD estimated from Google Maps linework.
Clive, IA Dallas Co. United States	Berkshire Pkwy. / Sheridan Ave. (41.61697, -93.84561)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.5370	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Columbia, MD Howard Co. United States	Cradlerock Way / Homespun Dr. (39.19095, -76.83787)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 22.2158	Other (At-Grade) Single-Lane	2001	Completed May 21, 2001. Previously controlled by one-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Lawrence, KS Douglas Co. United States	24th Pl. / Inverness Dr. (38.94105, -95.29808)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.0814	Other (At-Grade) Single-Lane	2001	Approved by Commission over neighborhood opposition. Was a 3 leg intersection prior to construction. Near Sunflower Elementary School and Southwest Junior High School. Functional Class: Collector ICD estimated from Google Maps linework.
Lawrence, KS Douglas Co. United States	24th Pl. / Crossgate Dr. (38.94130, -95.28875)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 26.9392	Other (At-Grade) Single-Lane	2001	Planned in connection with extention of 24th Place Functional Class: Collector ICD estimated from Google Maps linework.
Loveland, CO Larimer Co. United States	Plum Creek Dr. / Piney River Dr. (40.41253, -105.01850)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 29.0994	Other (At-Grade) Single-Lane	2001	Functional Class: Local ICD estimated from Google Maps linework.
Moses Lake, WA Grant Co. United States	Yonezawa Blvd. / S. Division St. / W. Belmont Ave. (47.10438, -119.27860)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.0857	Other (At-Grade) Single-Lane	2001	Pedestrian crossing has z-shape, with exit closer to roundabout than entrance. Part of series of 3 roundabouts. Previously controlled by one-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Bend, OR Deschutes Co. United States	SW Century Dr. / SW Mt. Washington Dr. / SW Reed Market Dr. (44.03860, -121.33590)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 57.9120	Other (At-Grade) Single-Lane	2001	Roundabout sized for ultimate conversion to double lane.
Paola, KS Miami Co. United States	K-68 / Old Kansas City Rd. / Hedge Ln. (38.62133, -94.85551)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 44.7895	Other (At-Grade) Single-Lane	2001	First roundabout on rural, high-speed facility in Kansas. Functional Class: Arterial ICD estimated from Google Maps linework.
Lawrence, KS Douglas Co. United States	Sunflower Park Rd / Inverness Dr (38.93745, -95.29810)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 111.4785	Other (At-Grade) Single-Lane	2001	Next to Sunflower Elementary School and Southwest Junior High School. Functional Class: Collector ICD estimated from Google Maps linework.
Monroe, WA Snohomish Co. United States	SR 522 EB Ramps / 164th St. SE / Tester Rd. (47.84863, -122.00580)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 60.9143	Other (At-Grade) Multilane (2 Lane, unspecified)	2001	Completed August 2001. This project won the Washington State APWA 2001 Project of the Award and the ASCE Seattle Section 2001 Outstanding Project Award. The Project is documented in the Compendium of Papers for 2000 ITE District 6 Annual Meeting, San Diego, CA. Reconfiguration of two intersections into a roundabout. Previously controlled by two-way stop ICD estimated from Google Maps linework.
Bayfield, CO La Plata Co. United States	CR 501 / Bayfield Center Dr. (37.23393, -107.60191)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.1480	Other (At-Grade) Single-Lane	2001	Bayfield Center Drive is a new roadway. Completed Fall 2001.
Olathe, KS Johnson Co. United States	Sheridan Rd. / Ridgeview Rd. / Dennis Ave. (38.87270, -94.79730)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 22.3160	Other (At-Grade) Single-Lane	2001	Completed April 2001. ICD estimated from Google Maps linework.
Olathe, KS Johnson Co. United States	Sheridan Rd. / Clairborne Rd. (38.87020, -94.79250)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 22.3168	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Topeka, KS Shawnee Co. United States	SW 29th St. / Urish Rd. (39.01446, -95.78102)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Single-Lane	2001	Completed July 2001 as single-lane roundabout. Retail shopping center on SW corner. Converted to partial double-lane roundabout 2010. 21442
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
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.
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.
La Quinta, CA Riverside Co. United States	Jefferson St. / Avenue 52 (33.67096, -116.26870)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 51.6860	Other (At-Grade) Multilane (2 Lane, unspecified)	2001	RT bypass lanes on all legs. ICD estimated from Google Maps linework.
Rochester Hills, MI Oakland Co. United States	Tienken Rd. / Sheldon Rd. (42.69626, -83.12320)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.6224	Other (At-Grade) Single-Lane	2001	Near Hart Middle School and Stoney Creek High School. Functional Class: Local ICD estimated from Google Maps linework.
Fort Collins, CO Larimer Co. United States	Rigden Pkwy. / Custer Dr. (40.54863, -105.02960)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.9307	Other (At-Grade) Single-Lane	2001	Date estimated. Functional Class: Local ICD estimated from Google Maps linework.
Chattanooga, TN Hamilton Co. United States	US 41 - US 76 - SR 8 (Westside Dr.) / 29th St. (35.00944, -85.27164)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 21.5209	Other (At-Grade) Single-Lane	2001	Completed September 26, 2001. The intersection is located at the western portal of the Bachman Tunnel, a two-lane tunnel through Missionary Ridge, connecting Chattanooga with the City of East Ridge, Tennessee. Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Williston, VT Chittenden Co. United States	Maple Tree Pl. / Sycamore Dr. (44.44349, -73.10966)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 22.1697	Other (At-Grade) Single-Lane	2001	Completed November 2001. Major shopping area, road part of the planned ring road around Taft Corner. Functional Class: Local ICD estimated from Google Maps linework.
Princeton, NJ Mercer Co. United States	Faculty Rd. / Elm Dr. (40.33888, -74.65523)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.2209	Other (At-Grade) Single-Lane	2001	This roundabout is on University owned roads open to the public. There is a second roundabout similar in dimensions upstream on Elm Drive. Close to an at-grade rail crossing. Previously controlled by one-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Springfield, OR Lane Co. United States	58th St. / Thurston Rd. (44.05320, -122.92640)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.7507	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Erwin, NY Steuben Co. United States	Robert Dann Dr. / Science Center Rd. (42.15936, -77.11082)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 53.3400	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2001	Add-lane right-turn bypass lane on west leg.
Eagle, CO Eagle Co. United States	Eby Creek Rd. / US 6 (39.65630, -106.82500)	Roundabout Existing	All-Way Yield Active Pedestrian Warning (flashing yellow)	4 Approaches 0 Driveways 40.4579	Other (At-Grade) Single-Lane	2001	Opened July 2001. Highway ref pt. 6-49.67. Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Lakewood, CO Jefferson Co. United States	Arbutus Dr. / W. 2nd Pl. (39.71649, -105.14750)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 27.5609	Other (At-Grade) Single-Lane	2001	Functional Class: Collector ICD estimated from Google Maps linework.
Kennewick, WA Benton Co. United States	12th Ave. / Irving St. (46.19768, -119.19670)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.9874	Other (At-Grade) Single-Lane	2001	Functional Class: Collector ICD estimated from Google Maps linework.
Kent, WA King Co. United States	S. 216th St. / 42nd Ave. S / 40th Pl. S (47.40843, -122.28120)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 23.4402	Other (At-Grade) Single-Lane	2001	Opened July 2001. ICD estimated from Google Maps linework.
Sammamish, WA King Co. United States	NE Inglewood Hill / 216th Ave. NE (47.61554, -122.05180)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.3989	Other (At-Grade) Single-Lane	2001	October 2001. ICD estimated from Google Maps linework.
Bend, OR Deschutes Co. United States	SW Colorado Ave. / SW Simpson St. (44.04770, -121.32290)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.2050	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Clearwater, FL Pinellas Co. United States	Mandalay Ave. / Acacia St. (27.98970, -82.82660)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.4750	Other (At-Grade) Single-Lane	2001	Boundary between commercial and residential area. Allows traffic attempting to park to use roundabout for U-turn without entering residential area. Also serves as U-turn for everyone, including WB-50 semis. Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Amelia Island, FL Nassau Co. United States	SR A1A / Amelia Island Plantation (30.55717, -81.45009)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.0040	Other (At-Grade) Single-Lane	2001	Year Completed estimated (1999-2003).
Amelia Island, FL Nassau Co. United States	SR A1A / Beach Lagoon Rd. (30.55541, -81.44933)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.0520	Other (At-Grade) Single-Lane	2001	Elliptical shape. ICD = 125 ft x 105 ft. Year Completed estimated (1999-2003).
Anchorage, AK Anchorage United States	Southport Dr. / Maritime Loop / Washington Ave. (61.12706, -149.92590)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.9886	Other (At-Grade) Single-Lane	2001	The first winter resulted in several accidents, including the loss of a number of light poles around the circle. In response, minor modifications were made to the roundabout in 2002. ICD estimated from Google Maps linework.
Calabasas, CA Los Angeles Co. United States	Parkway Calabasas / Camino Portal (34.13878, -118.65890)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.6442	Other (At-Grade) Single-Lane	2001	Documented in 2002 ITE District 6 Annual Meeting Compendium of Papers. Originally double-lane roundabout. Parkway Calabasas approaches tapered to single-lane in advance of entry by striping. Functional Class: Arterial ICD estimated from Google Maps linework.
Little Rock, AR Pulaski Co. United States	36th St. / Romine Rd. / West Rd. (34.72098, -92.38181)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 22.5782	Other (At-Grade) Single-Lane	2001	Elementary school and church nearby. http://www.contextsensitivesolutions.org/content/case_studies/kentucky_roundabout/resources/kentucky_roundabout_pdf/ Functional Class: Arterial ICD estimated from Google Maps linework.
Gig Harbor, WA Pierce Co. United States	Borgen Blvd. / SR 16 NB Ramps / Burnham Dr. (47.35843, -122.61260)	Roundabout Existing	All-Way Yield None	6 Approaches 0 Driveways 47.7339	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	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 ICD estimated from Google Maps linework.
Moses Lake, WA Grant Co. United States	Yonezawa Blvd. / Clover Dr. / Kittleson Rd. (47.10387, -119.25730)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.8990	Other (At-Grade) Single-Lane	2001	Part of series of 3 roundabouts. Functional Class: Collector ICD estimated from Google Maps linework.
Moses Lake, WA Grant Co. United States	Yonezawa Blvd. / Leanne Ave. (47.10454, -119.27060)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.4597	Other (At-Grade) Single-Lane	2001	Completed fall 2001. Part of series of 3 roundabouts. Functional Class: Collector ICD estimated from Google Maps linework.
North Haven, NY Suffolk Co. United States	Tyndall Road / Rte. 114 (Ferry Rd.) (41.01303, -72.31309)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.2334	Other (At-Grade) Single-Lane	2001	Replaced a dangerous 2-way stop. Previously controlled by two-way stop ICD estimated from Google Maps linework.
Guelph, ON Wellington County Canada	Summerfield Dr. / Colonial Dr. (43.51809, -80.18253)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.4466	Other (At-Grade) Single-Lane	2001	Located in Pine Ridge East residenital subdivision Functional Class: Collector ICD estimated from Google Maps linework.
Lafayette, LA Lafayette Par. United States	Settlers Trace / River Ranch Dr. (30.17073, -92.03625)	Roundabout Existing	All-Way Yield None	2 Approaches 0 Driveways 42.3339	Other (At-Grade) Multilane (2 Lane, unspecified)	2001	This a part of a Neo Traditional Neighborhood and the related street system. Completed June 2001. Functional Class: Collector ICD estimated from Google Maps linework.
Dimondale, MI Eaton Co. United States	East Rd. / Creyts Rd. (42.64743, -84.64275)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 31.6250	Other (At-Grade) Single-lane w/ Traversable Central Island	2001	British-style mini-roundabout. http://www.teachamerica.com/roundabouts/RA054A_Waddell_ppr.pdf ICD estimated from Google Maps linework.
Rosemont, MD Frederick Co. United States	MD 17 / MD 180 (39.33768, -77.63950)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 30.4828	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Scaggsville, MD Howard Co. United States	MD 216 / US 29 SB Ramps (39.14562, -76.90418)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 53.7228	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2001	Series of 4 roundabouts. ICD estimated from Google Maps linework.
Scaggsville, MD Howard Co. 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 53.7234	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2001	Series of 4 roundabouts. ICD estimated from Google Maps linework.
St. George, UT Washington Co. United States	Tabernacle Rd. / Main St. (37.10812, -113.58350)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 23.8119	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.