Roundabouts Database

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
Aberdeen, MD
Harford Co.
United States 		Old Philadelphia Rd. (MD 7) / Perryman Rd. (MD 159)
(39.48791, -76.19155) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
37.7911 		Other (At-Grade)
Single-Lane 		2019 https://www.facebook.com/pg/Harford-County-Roundabouts-308793279204833/posts/ 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.
Aberdeen, MD
Harford Co.
United States 		Philadelphia Rd. (MD 7) / Ashford Dr.. / Panell Dr.
(39.48593, -76.23873) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
41.4792 		Other (At-Grade)
Single-Lane 		2012 ICD estimated from Google Maps linework.
Oakland, MD
Garrett Co.
United States 		Heron Circle
(39.48570, -79.32376) 		Other
Existing 		Unknown
Unknown 		3 Approaches
1 Driveways
0.0000 		Other (At-Grade)
Unknown
Franklin, IN
Johnson Co.
United States 		Paris Dr. / (unknown)
(39.48524, -86.01812) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Single-Lane 		2016
Breckenridge, CO
Summit Co.
United States 		N Park Ave. / Watson Ave.
(39.48470, -106.04887) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2022 https://www.townofbreckenridge.com/live/watson-roundabout
Hamilton, OH
Butler Co.
United States 		Trenton Oxford Rd. (SR 73) / Jacksonburg Rd.
(39.48456, -84.51249) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Single-Lane 		2021
Middletown, DE
New Castle Co.
United States 		(Summit Bridge Rd. connector) / US 301 SB Ramps
(39.48446, -75.72248) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
35.0276 		Freeway Ramps (Grade-Separated)
Single-Lane 		2019 Raindrop shape. ICD estimated from Google Maps linework.
Middletown, DE
New Castle Co.
United States 		(Summit Bridge Rd. connector) / US 301 NB Ramps
(39.48404, -75.72131) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
34.1060 		Freeway Ramps (Grade-Separated)
Single-Lane 		2018 Raindrop shape. ICD estimated from Google Maps linework.
Aberdeen, MD
Harford Co.
United States 		Tralee Cir. / Ashford Dr.
(39.48395, -76.23831) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
25.8100 		Other (At-Grade)
Single-Lane 		2003 ICD estimated from Google Maps linework.
Bel Air South, MD
Harford Co.
United States 		Laurel Bush Rd. / Falkland Dr. / Dowers Rd.
(39.48330, -76.29847) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2017 Year Completed estimated (2013-2017).
Franklin, IN
Johnson Co.
United States 		E King St. / Eastview Dr.
(39.48269, -86.03241) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
42.6720 		Other (At-Grade)
Single-Lane 		2018 Right-turn-only lanes on north and east legs.
Franklin, IN
Johnson Co.
United States 		SR 144 / SR 44 / Westview Dr.
(39.48248, -86.08291) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown 		2019 Year Completed estimated (2017-2020).
Abingdon, MD
Harford Co.
United States 		Tollgate Rd. / Montrose Way
(39.48198, -76.32751) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.5762 		Other (At-Grade)
Single-Lane 		2003 Elementary school and library to north, another school to south. Functional Class: Collector ICD estimated from Google Maps linework.
Breckenridge, CO
Summit Co.
United States 		S Park Ave. (CO 9) / Four O'clock Rd.
(39.48043, -106.04811) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
34.1078 		Other (At-Grade)
Single-Lane 		2017 Year Completed estimated (2015-2018). ICD estimated from Google Maps linework.
Fairmont, WV
Marion Co.
United States 		WV 273 (State St.) / Elkins St.
(39.47870, -80.13730) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
54.8637 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2010 Detectable warning surfaces along entire length of narrow pedestrian ramp.
Abingdon, MD
Harford Co.
United States 		Tollgate Rd. / Singer Rd.
(39.47828, -76.32727) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.8121 		Other (At-Grade)
Single-Lane 		1998 http://www.teachamerica.com/roundabouts/RA058B_ppr_Statmeyer.pdf#search=%22bel%20air%20roundabout%22 ICD estimated from Google Maps linework.
Middletown, DE
New Castle Co.
United States 		Neverland Dr. / Whitebird Dr. / Carrick Ct.
(39.47819, -75.63221) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Middletown, DE
New Castle Co.
United States 		Marl Pit Rd. / Cedar Lane Rd.
(39.47762, -75.70312) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2020 https://www.middletowntranscript.com/story/news/2020/07/13/deldot-hopes-new-marl-pit-cedar-lane-roundabout-will-help-with-traffic/112217478/
Reisterstown, MD
Baltimore Co.
United States 		Worthington Ave. / Greenspring Ave. / Tufton Ave.
(39.47691, -76.76508) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
34.1095 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2017 ICD estimated from Google Maps linework.
Fairmont, WV
Marion Co.
United States 		WV 273 (State St.) / Haymond St.
(39.47601, -80.13599) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
54.8640 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2010 Detectable warning surfaces along entire length of narrow pedestrian ramp.
Bel Air South, MD
Harford Co.
United States 		Abingdon Rd. / Dunbarton Dr. / Box Hill S Pkwy.
(39.47491, -76.30092) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
25.8134 		Other (At-Grade)
Single-Lane 		2006 Year Completed estimated (2005-2007). ICD estimated from Google Maps linework.
Castle Pines, CO
Douglas Co.
United States 		W Castle Pines Pkwy. / Pine Ridge Ln. / Buffalo Trl.
(39.47283, -104.91386) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
30.4238 		Other (At-Grade)
Single-Lane 		2009 Year Completed estimated (2008-2010). ICD estimated from Google Maps linework.
Middletown, DE
New Castle Co.
United States 		W Middlepark Dr. / Idlewyld Dr.
(39.47243, -75.70326) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Saint Clair, OH
Butler Co.
United States 		Wayne Madison Rd. / Trenton Rd.
(39.47196, -84.47733) 		Roundabout
Existing 		All-Way Yield
Other 		4 Approaches
0 Driveways
62.4840 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2021 Egg shaped. ICD = 205 ft x 180 ft. Railroad crossing approximately 900 feet to south with railroad queue detection on south leg of roundabout to limit roundabout blockage.
Reisterstown, MD
Baltimore Co.
United States 		Long Ridge Rd. / Barto Ln.
(39.47055, -76.73195) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Pedestrian access to central island.
Parker, CO
Douglas Co.
United States 		Cross Canyon Trl. / Canyon Forge Dr.
(39.47008, -104.85988) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
51.8160 		Other (At-Grade)
Single-Lane 		2018 Year Completed estimated (2018-2019).
South Central, NV
Washoe Co.
United States 		Piazza Villagio / Vista Favoloso
(39.47002, -119.83304) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Reno, NV
Washoe Co.
United States 		Ridgeview Dr. / Piaaza Villagio
(39.46993, -119.83415) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Bel Air, MD
Harford Co.
United States 		Tollgate Rd. / Westover Ln. / Crisfield Dr.
(39.46859, -76.32162) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
26.7377 		Other (At-Grade)
Single-Lane 		2002 http://www.teachamerica.com/roundabouts/RA058B_ppr_Statmeyer.pdf#search=%22bel%20air%20roundabout%22 Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Abingdon, MD
Harford Co.
United States 		Merchants Blvd. / Wegmans Blvd.
(39.46815, -76.30901) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
29.5039 		Other (At-Grade)
Single-Lane 		2012 ICD estimated from Google Maps linework.
Castle Pines, CO
Douglas Co.
United States 		Lagae Rd. / Hyland Hills Rd.
(39.46753, -104.88126) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
41.4902 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2018 ICD estimated from Google Maps linework.
Reno, NV
Washoe Co.
United States 		Neill Rd. / Kietzke Ln.
(39.46721, -119.79120) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
52.5545 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2007 ICD estimated from Google Maps linework.
The Legends, DE
New Castle Co.
United States 		West Wittington Circle
(39.46705, -75.71358) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Pedestrian facility in central island.
Middletown, DE
New Castle Co.
United States 		Brick Mill Circle
(39.46632, -75.69145) 		Other
Existing 		Unknown
Unknown 		4 Approaches
9 Driveways
0.0000 		Other (At-Grade)
Single-Lane
St. Clair Township, OH
Butler Co.
United States 		Hamilton Trenton Rd. / Riverside Dr. / Busenbark Rd. / (parking lot)
(39.46565, -84.48671) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
38.7252 		Other (At-Grade)
Single-Lane 		2011 ICD estimated from Google Maps linework.
Owings Mills, MD
Baltimore Co.
United States 		Foxcreek Ct.
(39.46537, -76.75334) 		Other
Existing 		Unknown
Unknown 		3 Approaches
1 Driveways
0.0000 		Other (At-Grade)
Unknown
The Legends, DE
New Castle Co.
United States 		Wittington Way / Casper Way / Sheehan Dr.
(39.46536, -75.70967) 		Other
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Pedestrian facility in central island.
Middletown, OH
Warren Co.
United States 		Union Rd. / Greentree Rd.
(39.46532, -84.31978) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
36.8813 		Other (At-Grade)
Single-Lane 		2017 ICD estimated from Google Maps linework.
Bel Air South, MD
Harford Co.
United States 		Woodsdale Rd. / Box Hill Corporate Center Dr. / (parking)
(39.46498, -76.31016) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
30.4800 		Other (At-Grade)
Single-Lane 		2014 Year Completed estimated (2013-2015).
Cockeysville, MD
Baltimore Co.
United States 		Lord Byron Ln. / Duke of York Ln.
(39.46487, -76.63164) 		Other
Existing 		Unknown
Unknown 		3 Approaches
1 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Nelsonville, OH
Athens Co.
United States 		W Washington St. / John Lloyd Evans Dr. / Diamond Brick Rd.
(39.46440, -82.25096) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2012
Terre Haute, IN
Vigo Co.
United States 		IN-42 / Swalls Dr.
(39.46157, -87.28667) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.8833 		Other (At-Grade)
Single-Lane 		2013 Year Completed estimated (2011-2014). ICD estimated from Google Maps linework.
Owings Mills, MD
Baltimore Co.
United States 		Worthington Rd. / Hunters Glen
(39.46145, -76.74231) 		Other
Existing 		Unknown
Unknown 		3 Approaches
1 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Castle Pines, CO
Douglas Co.
United States 		Lagae Rd. / Monarch Blvd.
(39.46134, -104.87935) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
36.8834 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2018 ICD estimated from Google Maps linework.
Kingsville, MD
Baltimore Co.
United States 		MD 147 (Harford Rd.) / Glen Arm Rd. / Mt Vista Rd.
(39.46045, -76.45652) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.0397 		Other (At-Grade)
Single-Lane 		2018 https://www.baltimoresun.com/maryland/harford/aegis/ph-ag-harford-road-roundabout-20180102-story.html ICD estimated from Google Maps linework.
Wormans Mill, MD
Frederick Co.
United States 		Palatine Dr. / Island Grove Blvd.
(39.46038, -77.38314) 		Other
Existing 		Unknown
Unknown 		3 Approaches
3 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Pedestrian access to central island. No splitter islands.
St. Clair Township, OH
Butler Co.
United States 		Jacksonburg Rd. / Morganthaler Rd.
(39.46012, -84.52261) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.0399 		Other (At-Grade)
Single-Lane 		2010 ICD estimated from Google Maps linework.
Castle Pines, CO
Douglas Co.
United States 		Westbridge Dr. / Cross Canyon Trl.
(39.45951, -104.85287) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
50.2920 		Other (At-Grade)
Single-Lane 		2019 Year Completed estimated (2018-2019).
Middletown, DE
New Castle Co.
United States 		Bunker Hill Rd. / Choptank Rd.
(39.45790, -75.74350) 		Roundabout
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
31.3525 		Other (At-Grade)
Single-Lane 		2007 Rural, redesigned in 2008 to better accommodate trucks and farm equipment. ICD estimated from Google Maps linework.
Abingdon, MD
Harford Co.
United States 		Tewkesbury Rd. / Shrewsbury Rd.
(39.45775, -76.27273) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
49.7952 		Other (At-Grade)
Single-Lane 		2003 Year Completed estimated (2003-2004). http://onlinepubs.trb.org/Onlinepubs/circulars/ec083/68_Statmeyerpaper.pdf ICD estimated from Google Maps linework.
Bel Air, MD
Harford Co.
United States 		Constant Friendship Blvd. / BJ's
(39.45546, -76.31870) 		Roundabout
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
29.5092 		Other (At-Grade)
Single-Lane 		1995 Functional Class: Local ICD estimated from Google Maps linework.
Middletown, DE
New Castle Co.
United States 		Brick Mill Rd. / Dove Run Centre Dr.
(39.45413, -75.68672) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
24.3840 		Other (At-Grade)
Single-lane w/ Traversable Central Island 		2022
Abingdon, MD
Harford Co.
United States 		Four Seasons Dr. / Raking Leaf Dr. / Raking Leaf Dr. / Indian Summer Ct.
(39.45387, -76.28951) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2006 Painted splitter islands. Pedestrian crossings at entrance lines. Year Completed estimated (2005-2007).
Middletown, DE
New Castle Co.
United States 		Gloucester Blvd. / Hampton Rd.
(39.45210, -75.68096) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.0439 		Other (At-Grade)
Single-Lane 		2009 ICD estimated from Google Maps linework.
Middletown, DE
New Castle Co.
United States 		Spring Arbor Dr. / Trellis Ln.
(39.45194, -75.73915) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Mays Chapel, MD
Baltimore Co.
United States 		Ridgemont Rd.
(39.45142, -76.69629) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Frederick, MD
Frederick Co.
United States 		Greenleese Circle
(39.44847, -77.37242) 		Other
Existing 		Unknown
Unknown 		2 Approaches
1 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Middletown, DE
New Castle Co.
United States 		S Ridge Ave / Private Driveway
(39.44821, -75.73234) 		Roundabout
Existing 		Unknown
None 		4 Approaches
0 Driveways
40.5794 		Other (At-Grade)
Single-Lane 		2009 ICD estimated from Google Maps linework.
Middletown, MD
Frederick Co.
United States 		Smithfield Dr. / Layla Dr. / Hoffman Dr.
(39.44814, -77.52097) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Fort Bragg, CA
Mendocino Co.
United States 		E Fir St. / N Harrison St.
(39.44803, -123.80204) 		Traffic Calming Circle
Removed 		One-Way/Two-Way Stop
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2019 From the City of Fort Bragg: "The City installed a small neighborhood traffic calming circle in about 2012 on E Fir Street at N Harrison Street. Unfortunately, due to many years of complaints as well as traffic collision increases at the intersection, the roundabout was removed in 2019. It is still shown in Google Maps but it is removed now and replaced with at 4-way stop intersection."
Frederick, MD
Frederick Co.
United States 		W Whitecoat Dr.
(39.44784, -77.43031) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Frederick, MD
Frederick Co.
United States 		E Whitecoat Dr.
(39.44779, -77.42925) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Frederick, MD
Frederick Co.
United States 		Amber Dr. / Campus Dr.
(39.44702, -77.42000) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2013 Year Completed estimated (2013-2015). Mismatch between approach lane designations and circulatory roadway striping. Inside lane from east leg must make U-turn unless the driver changes lanes.
Frederick, MD
Frederick Co.
United States 		W Huff Blvd.
(39.44689, -77.43046) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Frederick, MD
Frederick Co.
United States 		E Huff Blvd.
(39.44685, -77.42933) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Frederick, MD
Frederick Co.
United States 		E Fagan Dr.
(39.44594, -77.42928) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Frederick, MD
Frederick Co.
United States 		W Fagan Ln.
(39.44591, -77.43047) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Mays Chapel, MD
Baltimore Co.
United States 		Dipping Pond Ct.
(39.44447, -76.71101) 		Other
Existing 		Unknown
Unknown 		2 Approaches
3 Driveways
0.0000 		Other (At-Grade)
Single-Lane
St. Clair Township, OH
Butler Co.
United States 		Eaton Rd. / Beissinger Rd.
(39.44294, -84.58301) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6602 		Other (At-Grade)
Single-Lane 		2015 ICD estimated from Google Maps linework.
Terre Haute, IN
Vigo Co.
United States 		Antioch Cir. / Antioch Cir. Access Road
(39.44227, -87.33917) 		Other
Existing 		Unknown
None 		3 Approaches
0 Driveways
25.8255 		Other (At-Grade)
Single-Lane 		Parking in circulatory roadway. ICD estimated from Google Maps linework.
Terre Haute, IN
Vigo Co.
United States 		S Sycamore Terrace St. / New Margaret Dr.
(39.43997, -87.34235) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
47.0408 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2011 ICD estimated from Google Maps linework.
(unincorporated), CO
Douglas Co.
United States 		Happy Canyon Rd. / Castle Pines Dr. S
(39.43975, -104.88723) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
34.1278 		Other (At-Grade)
Single-Lane 		2011 ICD estimated from Google Maps linework.
Frederick, MD
Frederick Co.
United States 		Synergy Way
(39.43898, -77.36665) 		Roundabout
Existing 		All-Way Yield
None 		2 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2010 Year Completed estimated (2009-2011).
Virginia Footills, NV
Washoe Co.
United States 		Buchephalus Pkwy. / Copenhagen Way / Bonfire Ln.
(39.43838, -119.71442) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Terre Haute, IN
Vigo Co.
United States 		2440 Huber Ln
(39.43817, -87.38012) 		Traffic Calming Circle
Existing 		Unknown
None 		2 Approaches
4 Driveways
23.0598 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Terre Haute, IN
Vigo Co.
United States 		2328 Huber Ln
(39.43817, -87.38160) 		Traffic Calming Circle
Existing 		Unknown
None 		2 Approaches
2 Driveways
23.0598 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Terre Haute, IN
Vigo Co.
United States 		2216 Huber Ln
(39.43806, -87.38327) 		Traffic Calming Circle
Existing 		Unknown
None 		1 Approaches
2 Driveways
23.0599 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Frederick, MD
Frederick Co.
United States 		Synergy Way / Progress Dr.
(39.43796, -77.36660) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.0520 		Other (At-Grade)
Single-Lane 		2008
Virginia Footills, NV
Washoe Co.
United States 		Bucephalus Pkwy. / Show Jumper Ln.
(39.43790, -119.71097) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2015 Painted splitter islands on north and south legs. Year Completed estimated (2014-2015).
(unincorporated), CO
Douglas Co.
United States 		Fox Sparrow Rd. / Windhaven Dr.
(39.43781, -104.73199) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
26.7495 		Other (At-Grade)
Single-Lane 		1998 Year Completed estimated (1993-1999). ICD estimated from Google Maps linework.
Virginia Footills, NV
Washoe Co.
United States 		Bucephalus Pkwy. / Burmese Ln. / Show Jumper Ln.
(39.43756, -119.70732) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands on north and south legs.
Townsend, DE
New Castle Co.
United States 		Tony Marchio Dr. / Campus Dr. / Stadium Way
(39.43676, -75.64873) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
53.3400 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2014 Concentric striping on circulatory roadway. Right-turn-only arrows in all lanes of three entries. Year Completed estimated (2011-2015).
Reno, NV
Washoe Co.
United States 		Burghley Ln. / Kerrydale Ct.
(39.43443, -119.71424) 		Other
Existing 		Unknown
Unknown 		2 Approaches
5 Driveways
0.0000 		Other (At-Grade)
Unknown
Dulaney Forest, MD
Baltimore Co.
United States 		E Ridgely Rd. / Margate Rd.
(39.43199, -76.60754) 		Traffic Calming Circle
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
19.8120 		Other (At-Grade)
Single-Lane 		2013 No raised splitter islands on side street. Year Completed estimated (2012-2014).
Virginia Footills, NV
Washoe Co.
United States 		Burghley Ln. / Calais Ln.
(39.43197, -119.71530) 		Unknown
Existing 		Unknown
Unknown 		3 Approaches
4 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Egg Harbor, NJ
Atlantic Co.
United States 		Tilton Road Circle
(39.43177, -74.57915) 		Signalized Roundabout/Circle
Existing 		Signal
Unknown 		5 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		Hamburger shaped.
Montalto Uffugo, Calabria
Cosenza
Italy 		SP248 (Corso Italia) / SP102 (Via Alessandro Manzoni)
(39.43119, 16.23146) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Parachute, CO
Garfield Co.
United States 		Old Hwy 6 / I-70 WB Ramps
(39.42982, -108.07610) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
51.8160 		Freeway Ramps (Grade-Separated)
Single-Lane 		2012
Castle Rock, CO
Douglas Co.
United States 		Sapphire Pointe Blvd. / Tremolite Dr.
(39.42908, -104.85397) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
52.5832 		Other (At-Grade)
Single-Lane 		2005 No buffer between sidewalk and circulatory roadway. ICD estimated from Google Maps linework.
Sykesville, MD
Carroll Co.
United States 		Old Washington Rd. (MD 97) / W Old Liberty Rd.
(39.42906, -77.00755) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
34.1330 		Other (At-Grade)
Single-Lane 		2000 Year Completed estimated (1995-2005). ICD estimated from Google Maps linework.
Reisterstown, MD
Baltimore Co.
United States 		Winged Foot Dr. / Crystal Downs Ct. / Kauri Cliffs Rd.
(39.42897, -76.81445) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Middletown, DE
New Castle Co.
United States 		St Annes Church Rd. / Levels Rd.
(39.42842, -75.73887) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
35.9783 		Other (At-Grade)
Single-Lane 		2010 Intersection was relocated when converted to roundabout. ICD estimated from Google Maps linework.
(unincorporated), CO
Douglas Co.
United States 		W Happy Canyon Rd. / Castle Pines Dr.
(39.42838, -104.90106) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.8306 		Other (At-Grade)
Single-Lane 		2011 ICD estimated from Google Maps linework.
Parachute, CO
Garfield Co.
United States 		Old Hwy 6 / I-70 EB Ramps / (unknown)
(39.42828, -108.07440) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
57.9120 		Freeway Ramps (Grade-Separated)
Single-Lane 		2012
Castle Rock, CO
Douglas Co.
United States 		Sapphire Pointe Blvd. / Sulfur Ln. / Peridot Ln.
(39.42788, -104.84576) 		Other
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
63.6545 		Other (At-Grade)
Single-Lane 		2003 Single-stage pedestrian crossings, fully traversable splitter islands, no buffer between sidewalk and circulatory roadway. Year Completed estimated (2002-2005). ICD estimated from Google Maps linework.
Montalto Uffugo, Calabria
Cosenza
Italy 		SP241 (Corso Italia) / Via Busento
(39.42609, 16.23949) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Martinsville, IN
Morgan Co.
United States 		SR 252 (Morgantown Rd.) / I-69 SB Ramps / Hospital Dr.
(39.42578, -86.40211) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Freeway Ramps (Grade-Separated)
Single-Lane 		2021 Replaced at-grade signalized intersection. Opened to traffic 12/2021. https://i69finishline.com/construction-schedule/.
Virginia Footills, NV
Washoe Co.
United States 		McCauley Ranch Blvd. / Gold Mine Dr.
(39.42575, -119.70909) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
41.1480 		Other (At-Grade)
Single-Lane 		2007 Painted splitter islands on all legs.
Middletown, DE
New Castle Co.
United States 		St Annes Church Rd. / Wiggins Mill Rd.
(39.42541, -75.72769) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
34.1348 		Other (At-Grade)
Single-Lane 		2010 Previous intersection was relocated when converted to roundabout. ICD estimated from Google Maps linework.