Roundabouts Database Index

29869 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
Brighton, CO Adams Co. United States	W. Bridge St. / US 85 SB Ramps (39.98682, -104.82450)	Roundabout Existing	Unknown Unknown	5 Approaches 0 Driveways 43.9241	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2006	Part of double-dumbbell interchange with two roundabouts and one storage lane into railroad crossing. ICD estimated from Google Maps linework.
Boston, MA Suffolk Co. United States	Willard St. / I-93 Ramps / Furnace Brook Expwy. (42.24208, -71.02673)	Rotary Existing	Unknown Unknown	4 Approaches 0 Driveways 99.0276	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Glenwood Springs, CO Garfield Co. United States	Mel Ray Rd. / I-70 EB Ramps / Midland Ave. / Riverine Rd. (39.56019, -107.36139)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 46.9595	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2006	1 of 2 at Exit 114 on I-70, observed under construction in 2005. ICD estimated from Google Maps linework.
Woburn, MA Middlesex Co. United States	I-95 Ramps / MA 38 (Main St.) (42.49945, -71.15711)	Rotary Existing	Unknown Unknown	4 Approaches 0 Driveways 30.8196	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Revere, MA Suffolk Co. United States	Copeland Circle [Rte 60 (Squire Rd.) / US 1 Ramps] (42.43008, -71.01710)	Rotary Existing	Unknown Unknown	4 Approaches 0 Driveways 381.0000	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max)		Retrofitted (November 2018) with multi-lane approaches/departures on the Route 1 ramps and roundabout style pavement markings and signs within the circulating roadway. ICD = 1250 ft x 880 ft. 21442
Glenwood Springs, CO Garfield Co. United States	Mel Ray Rd. / I-70 WB Ramps / US 6 (39.56142, -107.36127)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 44.1965	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2006	ICD estimated from Google Maps linework.
Acoma Indian Reservation, NM McKinley Co. United States	SH 30 / I-40 EB Ramps (35.07341, -107.56120)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 65.4897	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2010	Merging right-turn bypass lane on west leg. Series of 3 roundabouts. ICD estimated from Google Maps linework.
Jessup, MD Anne Arundel Co. United States	MD 198 (Laurel Fort Meade Rd.) / MD 32 WB Ramps (39.09178, -76.75688)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 53.3400	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2002	Lanes reduced in 2010. 21442
Buena Vista Township, MI Saginaw Co. United States	M-81 / I-75 SB Ramps (43.45060, -83.89209)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.6818	Freeway Ramps (Grade-Separated) Single-Lane	2006	Right turn bypass lanes ICD estimated from Google Maps linework.
Buena Vista Township, MI Saginaw Co. United States	M-81 / I-75 NB Ramps (43.45056, -83.88958)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.6818	Freeway Ramps (Grade-Separated) Single-Lane	2006	Right turn bypass lanes ICD estimated from Google Maps linework.
Truckee, CA Nevada Co. United States	Hwy 89 / I-80 WB Ramps (39.32386, -120.20760)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 40.6518	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2005	ICD estimated from Google Maps linework.
Advance, NC Davie Co. United States	NC 801 / I-40 EB Ramps (36.00655, -80.44083)	Roundabout Removed	All-Way Yield None	3 Approaches 0 Driveways 17.3907	Freeway Ramps (Grade-Separated) Single-Lane	2002	Developer-built "temporary" intersection fix. Previously controlled by one-way stop ICD estimated from Google Maps linework.
Chattanooga, TN Hamilton Co. United States	SR 153 NB Ramps / Lake Resort Dr. (35.10986, -85.22842)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 55.6902	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	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 ICD estimated from Google Maps linework.
Chattanooga, TN Hamilton Co. United States	SR 153 SB Ramps / N. Access Rd. / TVA offices (35.10868, -85.23122)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 97.7036	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2006	N Access Road is a 4 lane arterial road. Fatal crash April 4, 2010. 11861-05. ICD estimated from Google Maps linework.
Mesa, AZ Maricopa Co. United States	Brown Rd. / Loop 202 SB Ramps (33.43689, -111.65280)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 42.8563	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2007	ICD estimated from Google Maps linework.
Mesa, AZ Maricopa Co. United States	Brown Rd. / Loop 202 NB Ramps (33.43694, -111.64850)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 47.8396	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2007	ICD estimated from Google Maps linework.
Jessup, MD Anne Arundel Co. United States	MD 198 (Laurel Fort Meade Rd.) / MD 32 EB Ramps (39.08997, -76.75736)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 53.3400	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2002	Lanes reduced in 2010. 21442
Brighton, MI Livingston Co. United States	Lee Rd. / US 23 NB Ramps / Fieldcrest Dr. (42.50486, -83.75652)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 47.5461	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2005	ICD estimated from Google Maps linework.
Brighton, MI Livingston Co. United States	Lee Rd. / US 23 SB Ramps (42.50605, -83.75954)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.8600	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2006	Linked with Lee Rd/Whitmore Lake Rd roundabout. Previously controlled by one-way stop control ICD estimated from Google Maps linework.
Acoma Indian Reservation, NM McKinley Co. United States	SH 30 / I-40 WB Ramps (35.07505, -107.56110)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 65.4884	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2010	Merging right-turn bypass lane on north leg. Series of 3 roundabouts. ICD estimated from Google Maps linework.
Hanover, MD Anne Arundel Co. United States	Arundel Mills Blvd. / MD 295 NB Ramps (39.15573, -76.74459)	Roundabout Removed	All-Way Yield None	3 Approaches 0 Driveways 26.8575	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2002	ICD estimated from Google Maps linework. Replaced with DDI
Hanover, MD Anne Arundel Co. United States	Arundel Mills Blvd. / MD 295 SB Ramps (39.15677, -76.74617)	Roundabout Removed	All-Way Yield None	2 Approaches 0 Driveways 66.6796	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2002	ICD estimated from Google Maps linework. Replaced with DDI.
Jessup, MD Howard Co. United States	Canine Rd. / MD 32 EB Ramps (39.10101, -76.76953)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.0005	Freeway Ramps (Grade-Separated) Single-Lane	2001	ICD estimated from Google Maps linework.
Phoenix, AZ Maricopa Co. United States	Happy Valley Rd. / I-17 NB Ramps (33.71291, -112.11477)	Roundabout Removed	All-Way Yield None	4 Approaches 0 Driveways 64.0077	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2020	Initially constructed 2002, revised 2005. Removed in 2020, replaced with diverging diamond interchange: https://www.youtube.com/watch?v=Xgcxmf9UYWw. https://azdot.gov/adot-blog/requiem-roundabouts-least-ones-happy-valley-road 21442
Phoenix, AZ Maricopa Co. United States	Happy Valley Rd. / I-17 SB Ramps (33.71292, -112.12019)	Roundabout Removed	All-Way Yield None	3 Approaches 0 Driveways 62.4840	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2020	Initially constructed 2002, revised 2005. Removed in 2020, replaced with diverging diamond interchange: https://www.youtube.com/watch?v=Xgcxmf9UYWw. https://azdot.gov/adot-blog/requiem-roundabouts-least-ones-happy-valley-road 21442
Truckee, CA Nevada Co. United States	Hwy 89 / I-80 EB Ramps (39.32243, -120.20770)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 55.4354	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2005	ICD estimated from Google Maps linework.
Camp Verde, AZ Yavapai Co. United States	Middle Verde Rd. / I-17 NB Ramps (34.61039, -111.86160)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.4040	Freeway Ramps (Grade-Separated) Single-Lane	2006	ICD estimated from Google Maps linework.
Newton, KS Harvey Co. United States	First St. / I-135 Ramps (38.04250, -97.32240)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 65.8419	Freeway Ramps (Grade-Separated) Single-Lane	2003	Single-point interchange. Previously controlled by one-way stop ICD estimated from Google Maps linework.
Avon, CO Eagle Co. United States	William J Post Blvd. / I-70 WB Ramps (39.62759, -106.49460)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.6349	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2003	ICD estimated from Google Maps linework.
Avon, CO Eagle Co. United States	William J Post Blvd. / I-70 EB Ramps (39.62714, -106.49610)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 37.7153	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2003	ICD estimated from Google Maps linework.
Columbia, MO Boone Co. 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 94.7178	Freeway Ramps (Grade-Separated) 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. ICD estimated from Google Maps linework.
Richland, WA Benton Co. United States	Steptoe Dr. / SR 240 EB Ramps / Columbia Park Trl. (46.23893, -119.24546)	Roundabout Existing	All-Way Yield Metering Signal	5 Approaches 0 Driveways 49.5635	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2007	5th leg is on-ramp to SR 240. Opened November 2007. Lane configuration reduced in 2016. Modified in 2018 to add metering signal. According to local news (link below) they started metering the traffic on the westbound Columbia Park Trail approach in 2018. It only turns on when traffic coming off the freeway gets backed up. https://97rockonline.com/tri-cities-roundabout-gets-new-metered-traffic-light-wait-what/ 21442
Topeka, KS Shawnee Co. United States	46th St. / US 75 Ramps (39.12934, -95.71959)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 124.9680	Freeway Ramps (Grade-Separated) Single-Lane	2002	Roundabout under structure as part of single-point interchange. Elliptical shaped. ICD = 410 ft x 270 ft. Original intersection was at grade. Completed November 2002.
Arcata, CA Humboldt Co. United States	Guintoli Ln. / US 101 NB Ramps (40.90492, -124.08510)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.3015	Freeway Ramps (Grade-Separated) Single-Lane	2005	ICD estimated from Google Maps linework.
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.
Kaukauna, WI Outagamie Co. United States	CTH J / US 41 NB Ramps (44.30463, -88.24939)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 37.6070	Freeway Ramps (Grade-Separated) Single-Lane	2010	Opened October 11, 2010. ICD estimated from Google Maps linework.
Sterling Heights, MI Macomb Co. 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 76.2000	Freeway Ramps (Grade-Separated) Multilane (3+ Lane)	2005	Completed June 2005.
Carson City, NV Carson City Co. United States	Arrowhead Dr. / I-580 SB Ramp (39.19810, -119.77540)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.7669	Freeway Ramps (Grade-Separated) Single-Lane	2002	Future SB on-ramp for Carson City Freeway (I-580). Overpass and roundabouts completed in 2002; freeway ramps completed ~2005. ICD estimated from Google Maps linework.
Carson City, NV Carson City Co. United States	Arrowhead Dr. / I-580 NB Ramps / Imus Rd. (39.19840, -119.77380)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.6923	Freeway Ramps (Grade-Separated) Single-Lane	2002	NB off-ramp for Carson City Freeway (I-580) and extension of Imus Road. Overpass and roundabouts completed in 2002. ICD estimated from Google Maps linework.
Kaukauna, WI Outagamie Co. United States	CTH J / US 41 SB Ramps (44.30645, -88.24948)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.8965	Freeway Ramps (Grade-Separated) Single-Lane	2010	Opened October 11, 2010. ICD estimated from Google Maps linework.
Frisco, CO Summit Co. United States	SH 9 / I-70 WB Ramps (39.59339, -106.09700)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 34.0524	Freeway Ramps (Grade-Separated) Single-Lane	2000	Highway ref. pt. 70-202.35. ICD estimated from Google Maps linework.
Gig Harbor, WA Pierce Co. United States	Borgen Blvd. / SR 16 SB Ramps (47.35868, -122.61610)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.8342	Freeway Ramps (Grade-Separated) Single-Lane	2004	Opened March 2004. ICD estimated from Google Maps linework.
St. George, UT Washington Co. 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 78.1526	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2006	Combines interchange ramps and frontage road. 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.
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.
Millington, MD Kent Co. United States	MD 291 / US 301 SB Ramps (39.26463, -75.86641)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.4393	Freeway Ramps (Grade-Separated) Single-Lane	1999	Opened August 1999. ICD estimated from Google Maps linework.
Millington, MD Kent Co. United States	MD 291 / US 301 NB Ramps (39.26386, -75.86260)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.6656	Freeway Ramps (Grade-Separated) Single-Lane	1999	Opened August 1999. ICD estimated from Google Maps linework.
St. George, UT Washington Co. United States	E. Brigham Rd. / I-15 NB Ramps (37.05939, -113.58350)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.8889	Freeway Ramps (Grade-Separated) Single-Lane	2006	Raindrop-shaped interchange terminal. ICD estimated from Google Maps linework.
Lewisville, NC Forsyth Co. 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 29.9191	Freeway Ramps (Grade-Separated) Single-Lane	2000	Solved capacity problem. Previously controlled by one-way stop ICD estimated from Google Maps linework.
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 35.1352	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2004	Previously controlled by one-way stop ICD estimated from Google Maps linework.
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 38.0151	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2004	Spiral striping. ICD estimated from Google Maps linework.
Newton, KS Harvey Co. United States	Broadway St. / I-135 Ramps (38.05000, -97.32250)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.1441	Freeway Ramps (Grade-Separated) 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 ICD estimated from Google Maps linework.
Anchorage, AK Anchorage United States	C St. / O'Malley EB Ramps (61.12273, -149.88630)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 53.3400	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max)	2006
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
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
Arcata, CA Humboldt Co. United States	Guintoli Ln. / US 101 SB Ramps (40.90400, -124.08920)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.7180	Freeway Ramps (Grade-Separated) Single-Lane	2005	ICD estimated from Google Maps linework.
Kingston, NY Ulster Co. United States	I-587 / Rte 28 / I-87 Ramps / Washington Ave. (41.94362, -74.02840)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.9600	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max)	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.
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.
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.
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.
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.
Carmel, IN Hamilton Co. United States	Clay Terrace Blvd. / Circle Dr. / Range Line Rd. / US 31 SB Off-Ramp (39.99264, -86.12840)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 51.8160	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2012
Carmel, IN Hamilton Co. United States	E Main St. / Keystone Pkwy. SB Ramps (39.97844, -86.11319)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.7200	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max)	2009	Raindrop shaped. Year Completed estimated (2008-2010).
Carmel, IN Hamilton Co. United States	E Main St. / Keystone Pkwy. NB Ramps (39.97843, -86.11238)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.7200	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max)	2009	Raindrop shaped. Year Completed estimated (2008-2010).
Moon Township, PA Allegheny Co. United States	SR 3070 / Resurrection Rd. / I-376 SB Ramps (40.48070, -80.20240)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.4290	Freeway Ramps (Grade-Separated) Single-Lane	2011	Previously controlled by two-way stop ICD estimated from Google Maps linework.
Avoca Borough, PA Luzerne Co. United States	William St. / I-81 SB Ramps (41.33570, -75.73790)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 50.2188	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2015	ICD estimated from Google Maps linework.
Avoca Borough, PA Luzerne Co. United States	SR 315 / I-81 SB Ramps (41.33392, -75.73889)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 65.5320	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max)	2016
Avoca Borough, PA Luzerne Co. United States	SR 315 / I-81 NB Ramps / Navy Way Rd. (41.33429, -75.73450)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 56.4971	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2015	Fifth leg is departure only to I-81 NB on-ramp. ICD estimated from Google Maps linework.
Cottage Grove, MN Washington Co. United States	Jamaica Ave. / US 10-US 61 EB Ramps / W Point Douglas Rd. (44.81452, -92.93504)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 57.6128	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2007	ICD estimated from Google Maps linework.
Cottage Grove, MN Washington Co. United States	Jamaica Ave. / US 10-US 61 WB Ramps (44.81586, -92.93379)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 37.2780	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2007	ICD estimated from Google Maps linework.
Prescott, AZ Yavapai Co. United States	Grande Dame Pkwy. / SR 89A EB Ramps (34.63499, -112.39830)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 52.0821	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2011	ICD estimated from Google Maps linework.
Prescott, AZ Yavapai Co. United States	Grande Dame Pkwy. / SR 89A WB Ramps (34.63643, -112.39710)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 51.0985	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2011	ICD estimated from Google Maps linework.
Janesville, WI Rock Co. United States	N Harmony Town Hall Rd. / STH 26 NB Ramps (42.75114, -88.95416)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.6240	Freeway Ramps (Grade-Separated) Single-Lane	2012	Interchange replaced single at-grade two-way stop-controlled intersection.
Janesville, WI Rock Co. United States	N Harmony Town Hall Rd. / STH 26 SB Ramps (42.75331, -88.95426)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.6240	Freeway Ramps (Grade-Separated) Single-Lane	2012	Interchange replaced single at-grade two-way stop-controlled intersection.
(unincorporated), WI Sauk Co. United States	CTH BD (Fern Dell Rd.) / US 12 EB Ramps (43.55774, -89.77940)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 40.6788	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2010	Series of 4 roundabouts. ICD estimated from Google Maps linework.
(unincorporated), WI Sauk Co. United States	CTH BD (Fern Dell Rd.) / US 12 WB Ramps (43.55867, -89.78077)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.5437	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2010	Series of 4 roundabouts. ICD estimated from Google Maps linework.
Jackson, WI Washington Co. United States	STH 60 / US 45 NB Ramps (43.32441, -88.18568)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 19.1147	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2012	Opened November 2012. ICD estimated from Google Maps linework.
Jackson, WI Washington Co. United States	STH 60 / US 45 SB Ramps (43.32437, -88.18747)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 22.5901	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2012	Opened November 2012. ICD estimated from Google Maps linework.
Oshkosh, WI Winnebago Co. United States	STH 21 (Omro Rd.) / US 41 SB Ramps (44.03272, -88.58319)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 60.1058	Freeway Ramps (Grade-Separated) Multilane (3+ Lane)	2012	Opened August 30, 2012. Three-lane roundabout. Series of 4 roundabouts. ICD estimated from Google Maps linework.
Oshkosh, WI Winnebago Co. United States	STH 21 (Omro Rd.) / US 41 NB Ramps (44.03271, -88.58178)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 140.8193	Freeway Ramps (Grade-Separated) Multilane (3+ Lane)	2012	Opened October 29, 2012. Three-lane roundabout. Series of 4 roundabouts. ICD estimated from Google Maps linework.
Roberts, WI Saint Croix Co. United States	STH 65 / I-94 EB Ramps (44.95862, -92.55999)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 48.1723	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2013	Opened October 2013. Ramp terminal relocated closer to bridge when roundabout was constructed. ICD estimated from Google Maps linework.
Roberts, WI Saint Croix Co. United States	STH 65 / I-94 WB Ramps (44.96036, -92.55952)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 50.7061	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2013	Opened October 2013. Ramp terminal relocated closer to bridge when roundabout was constructed. ICD estimated from Google Maps linework.
Beloit, WI Rock Co. United States	E Hart Rd. / I-43 NB Ramps (42.53960, -88.94841)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 31.6798	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2009	Opened October 2009. Series of 3 roundabouts. Right turn bypass lane. ICD estimated from Google Maps linework.
Beloit, WI Rock Co. United States	E Hart Rd. / I-43 SB Ramps (42.54142, -88.94933)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.0787	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2009	Opened October 2009. Series of 3 roundabouts. Right turn bypass lane. ICD estimated from Google Maps linework.
Oregon, WI Dane Co. United States	STH 138 / US 14 WB Ramps (42.91764, -89.36607)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 47.2309	Freeway Ramps (Grade-Separated) Single-Lane	2011	ICD estimated from Google Maps linework.
Oregon, WI Dane Co. United States	STH 138 / US 14 EB Ramps (42.91774, -89.36817)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.1083	Freeway Ramps (Grade-Separated) Single-Lane	2011	ICD estimated from Google Maps linework.
Oregon, WI Dane Co. United States	CTH MM / US 14 EB Ramps (42.95128, -89.37859)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 29.7217	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2012	Series of 3 roundabouts. ICD estimated from Google Maps linework.
Oregon, WI Dane Co. United States	CTH MM / US 14 WB Ramps (42.95272, -89.37769)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.9591	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2012	Series of 3 roundabouts. ICD estimated from Google Maps linework.
Milton, WI Rock Co. United States	STH 59 / STH 26 NB Ramps (42.76902, -88.92310)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.6240	Freeway Ramps (Grade-Separated) Single-Lane	2009	Opened October 2009.
Milton, WI Rock Co. United States	STH 59 / STH 26 SB Ramps (42.76911, -88.92484)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.6240	Freeway Ramps (Grade-Separated) Single-Lane	2009	Opened October 2009.