|
City,
State County Country |
Intersection (Lat, Lng) |
Type Status |
Control Type / Other Control Type | Approaches / Driveways / ICD (m) |
Functional Class / LaneType |
Year Completed | Comments |
|---|---|---|---|---|---|---|---|
|
Chillicothe,
OH Ross Co. United States |
SR 159 / SR 180 (39.42539, -82.95429) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
2020 | https://www.facebook.com/ODOTDistrict9/videos/ross-207-extension-first-trip/344554030308290/ |
|
Martinsville,
IN Morgan Co. United States |
SR 252 (Morgantown Rd.) / I-69 NB Ramps (39.42498, -86.40092) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 0.0000 |
Freeway Ramps (Grade-Separated) Single-Lane |
2021 | Replaced at-grade signalized intersection. |
|
Castle Rock,
CO Douglas Co. United States |
Castle Rock Pkwy. / Promenade Pkwy. / I-25 SB Off-Ramp / I-25 NB Ramps (39.42427, -104.87786) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 43.3611 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2016 | ICD estimated from Google Maps linework. |
|
Martinsville,
IN Morgan Co. United States |
SR 252 (Morgantown Rd.) / Cramertown Loop (39.42394, -86.39938) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
2021 | Opened 12/2021 as part of the I-69 opening around Martinsville. https://i69finishline.com/construction-schedule/. |
|
Castle Rock,
CO Douglas Co. United States |
Promenade Pkwy. / (parking lot) (39.42238, -104.87869) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 29.5233 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
2016 | ICD estimated from Google Maps linework. |
|
Linganore,
MD Frederick Co. United States |
Woodridge Rd. / Woodland Rd. (39.42155, -77.32956) |
Other Existing |
Unknown Unknown |
3 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
No splitter islands. | |
|
Owings Mills,
MD Baltimore Co. United States |
Tollgate Rd. / Lastgage Rd. (39.42149, -76.78482) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 28.6010 |
Other (At-Grade) Single-Lane |
2004 | ICD estimated from Google Maps linework. |
|
Liberty Township,
OH Butler Co. United States |
Aspenwood Dr. / Aspen Trail Blvd. (39.42119, -84.44619) |
Other Existing |
All-Way Yield None |
3 Approaches 0 Driveways 26.7559 |
Other (At-Grade) Single-Lane |
2003 | No splitter islands. ICD estimated from Google Maps linework. |
|
Terre Haute,
IN Vigo Co. United States |
Willow Run Ct. / Aspen Ct. / Magnolia Ct. (39.42072, -87.32787) |
Other Existing |
Unknown Unknown |
4 Approaches 0 Driveways 101.4886 |
Other (At-Grade) Single-Lane |
ICD estimated from Google Maps linework. | |
|
Hanover Township,
OH Butler Co. United States |
Stahlheber Rd. / Morman Rd. (39.42038, -84.64629) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 39.6240 |
Other (At-Grade) Single-Lane |
2023 | |
|
Townsend,
DE New Castle Co. United States |
N Odessa Blvd. / Tweedsmere Dr. / Aviemore Dr. / Ravenglass Dr. (39.41965, -75.63644) |
Other Existing |
Unknown Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
||
|
Chillicothe,
OH Ross Co. United States |
SR 159 / SR 207 (39.41938, -82.95615) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
2020 | https://www.facebook.com/ODOTDistrict9/videos/ross-207-extension-first-trip/344554030308290/ |
|
Linganore,
MD Frederick Co. United States |
Boyers Mill Rd. / Eaglehead Dr. (39.41912, -77.30650) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 33.5280 |
Other (At-Grade) Single-Lane |
2018 | |
|
Castle Rock,
CO Douglas Co. United States |
Promenade Pkwy. / (parking lots) (39.41882, -104.87797) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 41.5192 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
2016 | ICD estimated from Google Maps linework. |
|
Castle Rock,
CO Douglas Co. United States |
Castle Oaks Dr. / Arabella Dr. (39.41863, -104.77860) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 36.5760 |
Other (At-Grade) Single-Lane |
2006 | |
|
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. |
|
Liberty Township,
OH Butler Co. United States |
Kyles Station Rd. / Lesourdsville West Chester Rd. (39.41743, -84.43708) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 40.5974 |
Other (At-Grade) Single-Lane |
2012 | ICD estimated from Google Maps linework. |
|
Castle Rock,
CO Douglas Co. United States |
N Meadows Dr. / (unknown) (39.41690, -104.89226) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 53.3400 |
Other (At-Grade) Multilane (2 Lane, 2x2 max) |
2021 | |
|
Silver Springs,
NV Lyon Co. United States |
US 50 / Alt US 95 (39.41616, -119.22497) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
2020 | https://mynews4.com/news/local/new-us-5095a-traffic-roundabout-to-open-in-silver-springs-tomorrow |
|
Townsend,
DE New Castle Co. United States |
Robinson Rd. / Goldsborough Dr. (39.41614, -75.65156) |
Other Existing |
Unknown Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
No splitter islands on three legs. | |
|
Liberty Township,
OH Butler Co. United States |
Kyles Station Rd. / Yankee Rd. (39.41489, -84.38421) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 40.5988 |
Other (At-Grade) Single-Lane |
2013 | ICD estimated from Google Maps linework. |
|
Terre Haute,
IN Vigo Co. United States |
IN-46 / IN-641 SB Ramps (39.41463, -87.33553) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways |
Freeway Ramps (Grade-Separated) Single-Lane |
2016 | |
|
Liberty Township,
OH Butler Co. United States |
Kyles Station Rd. / Cincinnati Dayton Rd. (39.41390, -84.36743) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 40.5994 |
Other (At-Grade) Single-Lane |
2016 | ICD estimated from Google Maps linework. |
|
Castle Rock,
CO Douglas Co. United States |
New Beale St. / (parking) (39.41325, -104.87702) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 39.6240 |
Other (At-Grade) Single-Lane |
2007 | Year Completed estimated (2006-2008). |
|
Sykesville,
MD Carroll Co. United States |
Bennett Rd. / Monroe Ave. (39.41306, -76.92967) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 26.7590 |
Other (At-Grade) Single-Lane |
2006 | ICD estimated from Google Maps linework. |
|
Frederick,
MD Frederick Co. United States |
Hillsborough Dr. / Hillsborough Terrace / Forest Hills Ct. (39.41266, -77.34441) |
Other Existing |
Unknown Unknown |
3 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
No splitter islands. | |
|
Terre Haute,
IN Vigo Co. United States |
IN-46 / IN-641 NB Ramps (39.41253, -87.33459) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 36.9093 |
Freeway Ramps (Grade-Separated) Single-Lane |
2016 | ICD estimated from Google Maps linework. |
|
Owings Mills,
MD Baltimore Co. United States |
Upper Mill Dr. / Bluestem Ct. /Spring Willow Ct. / Bayline Cir. (39.41253, -76.82032) |
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 |
Hwy 1 / Simpson Ln. (39.41239, -123.80830) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 52.5958 |
Other (At-Grade) Single-Lane |
2012 | ICD estimated from Google Maps linework. |
|
Joppa,
MD Harford Co. United States |
Trimble Rd. / Fort Hoyle Rd. (39.41183, -76.33325) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 30.4800 |
Other (At-Grade) Single-Lane |
2012 | Year Completed estimated (2011-2013). |
|
Perry Hall,
MD Baltimore Co. United States |
Seven Courts Dr. / Proctor Ln. (39.41060, -76.48483) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 27.4320 |
Other (At-Grade) Single-Lane |
2008 | Year Completed estimated (2007-2008). |
|
Owings Mills,
MD Baltimore Co. United States |
New Town Blvd. / Rangeford Dr. (39.40957, -76.80654) |
Other Existing |
Unknown Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
||
|
Townsend,
DE New Castle Co. United States |
Glen Mohr Dr. / Perthshire Dr. / S Odessa Blvd. (39.40908, -75.63633) |
Other Existing |
Unknown Unknown |
3 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
||
|
Casal da Boavista de São Gregório,
Leiria Caldas da Rainha Portugal |
Rua Doutor Vieira Pereira / Rua Inseparáveis De Lubango / Rua da Crocha (39.40878, -9.12190) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways |
Other (At-Grade) Multilane (2 Lane, unspecified) |
||
|
Montalto Uffugo,
Calabria Cosenza Italy |
SP247 (Via Sila) / Via Coretta (39.40860, 16.25275) |
Roundabout Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways |
Other (At-Grade) Single-Lane |
||
|
Frederick,
MD Frederick Co. United States |
Claridge Dr. S / Spring Ridge Pkwy. (39.40767, -77.33577) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 2 Driveways 35.0520 |
Other (At-Grade) Single-Lane |
2002 | Painted splitter islands on two legs. Year Completed estimated (1988-2005). |
|
Owings Mills,
MD Baltimore Co. United States |
Grand Central Ave. / Waverly Ln. (39.40713, -76.78413) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 39.6240 |
Other (At-Grade) Single-Lane |
2014 | Year Completed estimated (2011-2014). West leg added 2015. |
|
Rose,
Calabria Cosenza Italy |
SP234 / SP247 (39.40709, 16.26141) |
Roundabout Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways |
Other (At-Grade) Single-Lane |
||
|
Frederick,
MD Frederick Co. United States |
Briarcliff Ln. / Briarcliff Way / Cliffside Terrace (39.40696, -77.34925) |
Other Existing |
Unknown Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
No splitter islands. | |
|
Frederick,
MD Frederick Co. United States |
Butterfly Ln. / Himes Ave. (39.40671, -77.44764) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Unknown |
2020 | https://www.cityoffrederickmd.gov/CivicAlerts.aspx?aid=6432 |
|
Frederick,
MD Frederick Co. United States |
S East St. / (future road) (39.40599, -77.40392) |
Roundabout Existing |
All-Way Yield None |
2 Approaches 0 Driveways 51.8160 |
Other (At-Grade) Multilane (2 Lane, 2x1 max) |
2009 | Year Completed estimated (2009-2011). East leg is stubbed for future connection. |
|
Fairfield Township,
OH Butler Co. United States |
Millikin Rd. / Morris Rd. / Carter Cir. (39.40585, -84.49448) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 36.5760 |
Other (At-Grade) Single-Lane |
2024 | Roundabout opened August 3, 2024. |
|
Owings Mills,
MD Baltimore Co. United States |
Grand Central Ave. / (parking) (39.40581, -76.78033) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 48.7680 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
2014 | Year Completed estimated (2011-2014). |
|
White Marsh Station,
MD Baltimore Co. United States |
Carrington Dr. / Jerome Ave. (39.40574, -76.40236) |
Other Existing |
Unknown Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
No splitter islands. | |
|
Perry Hall,
MD Baltimore Co. United States |
Scott Moore Way / Honeygo Center Dr. (39.40491, -76.44142) |
Other Existing |
All-Way Yield Unknown |
3 Approaches 1 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
Pedestrian access to central island. | |
|
Perry Hall,
MD Baltimore Co. United States |
Georgia Belle Dr. / Fragrence Way / Harcrest Way (39.40467, -76.42700) |
Other Existing |
All-Way Yield Unknown |
4 Approaches 4 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
||
|
Martinsville,
IN Morgan Co. United States |
SR 39 (Morton Ave.) / I-69 SB Ramps / Rogers Rd. (39.40439, -86.44597) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 0.0000 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2021 | I-69 freeway opened 12/23/2021 - see https://content.govdelivery.com/accounts/INDOT/bulletins/30250b9 ** Roundabout opened with temporary configuration while new southbound ramp construction is completed |
|
Townsend,
DE New Castle Co. United States |
Karins Circle (39.40433, -75.69677) |
Other Existing |
Unknown Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
||
|
Perry Hall,
MD Baltimore Co. United States |
E Joppa Rd. / Scott Moore Way / Cowenton Ave. (39.40290, -76.44124) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 38.1000 |
Other (At-Grade) Single-Lane |
2008 | Right-turn bypass lane on west leg. |
|
Reno,
NV Washoe Co. United States |
SR 341 (Geiger Grade Rd.) / Veterans Pkwy. / (parking) (39.40271, -119.74165) |
Roundabout Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 62.4840 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
2011 | Double left (left, left-through-right) on south leg; double right (left-through-right, right) on west leg. |
|
Liberty Township,
OH Butler Co. United States |
Millikin Rd. / Pinckney Trl. (39.40263, -84.43077) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 39.6240 |
Other (At-Grade) Single-Lane |
2021 | |
|
Martinsville,
IN Morgan Co. United States |
SR 39 / I-69 NB Ramps / Southview Dr. (39.40262, -86.44528) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 0.0000 |
Freeway Ramps (Grade-Separated) Single-Lane |
2021 | Year Completed estimated (2020-2021). https://i69finishline.com/construction-schedule/. |
|
Linganore,
MD Frederick Co. United States |
Finn Dr. / Douglas Ave. / Huckleberry Way (39.40210, -77.29509) |
Other Existing |
Unknown Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
Pedestrian access to central island. No splitter islands. | |
|
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 |
|
Liberty Township,
OH Butler Co. United States |
Millikin Rd. / Maud Hughes Rd. (39.40153, -84.40943) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 39.6837 |
Other (At-Grade) Single-Lane |
2013 | ICD estimated from Google Maps linework. |
|
Reno,
NV Washoe Co. United States |
Herz Blvd. / Summit Sierra Blvd. (39.40118, -119.75215) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 45.7200 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
2006 | Concentric circulatory roadway striping. Year Completed estimated (2004-2006). |
|
Carbondale,
CO Garfield Co. United States |
CO-133 / Main St. (39.40113, -107.21968) |
Roundabout Existing |
All-Way Yield Rectangular Rapid Flashing Beacon (RRFB) |
4 Approaches 0 Driveways 42.4526 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
2013 | ICD estimated from Google Maps linework. |
|
Liberty Township,
OH Butler Co. United States |
Yankee Rd. / Millikin Rd. (39.40022, -84.38541) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 34.1471 |
Other (At-Grade) Single-Lane |
2018 | ICD estimated from Google Maps linework. |
|
Silver Springs,
NV Lyon Co. United States |
US 50 / USA Pkwy. / Opal Ave. (39.40014, -119.26883) |
Roundabout Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 64.0080 |
Other (At-Grade) Multilane (3+ Lane) |
2017 | Consecutive double-left turns. |
|
Villages of Winterset,
MD Baltimore Co. United States |
Runnymeade Rd. / New Town Blvd. / Bon Haven Ln. (39.39893, -76.81700) |
Other Existing |
Unknown Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
||
|
Linganore,
MD Frederick Co. United States |
Lake Linganore Blvd. / Eaglehead Dr. (39.39732, -77.31047) |
Roundabout Existing |
All-Way Yield Unknown |
3 Approaches 1 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
2019 | Year Completed estimated (2018-2022). |
|
New Market,
MD Frederick Co. United States |
Eaglehead Dr. / Tomahawk St. / Fallfish Ct. (39.39677, -77.30826) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 35.0520 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
2018 | Year Completed estimated (2017-2018). |
|
El Jebel,
CO Eagle Co. United States |
El Jebel Rd. / Shadow Rock Rd. (39.39554, -107.08999) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 128.2910 |
Other (At-Grade) Single-Lane |
2017 | https://www.aspentimes.com/news/el-jebel-road-roundabout-opens-saturday/ ICD estimated from Google Maps linework. |
|
Frederick,
MD Frederick Co. United States |
Mercantile Dr. E / Rodes Cir. (39.39507, -77.44311) |
Other Existing |
Unknown Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
No splitter islands. | |
|
Brigantine,
NJ Atlantic Co. United States |
Brigantine Blvd. / Bayshore Ave. / 34th St. S / (unknown) / (parking lot) (39.39482, -74.38953) |
Other Existing |
Other None |
7 Approaches 0 Driveways 28.6120 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
All entries except Brigantine Blvd controled by stop signs. ICD estimated from Google Maps linework. | |
|
Frederick,
MD Frederick Co. United States |
Jefferson Station Blvd. / Jefferson Commons Way (39.39479, -77.44916) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 45.7200 |
Other (At-Grade) Multilane (2 Lane, 2x1 max) |
2015 | Year Completed estimated (2013-2015). |
|
Liberty Township,
OH Butler Co. United States |
The Trails Blvd. / Kensington Trl. / Windsor Trl. / Cambridge Trl. (39.39451, -84.34693) |
Other Existing |
All-Way Stop None |
4 Approaches 0 Driveways 50.7634 |
Other (At-Grade) Single-Lane |
2002 | Stop control; no splitter islands. ICD estimated from Google Maps linework. |
|
Liberty Township,
OH Butler Co. United States |
Carriage House Blvd. / Thoroughbred Ln. / Winner Circle Dr. (39.39434, -84.45087) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 35.0730 |
Other (At-Grade) Single-Lane |
2014 | ICD estimated from Google Maps linework. |
|
New Market,
MD Frederick Co. United States |
Empire Blvd. / Edwardian Ln. / Jacobian Pl. (39.39428, -77.29567) |
Other Existing |
Unknown Unknown |
3 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
Parking along circulatory roadway. | |
|
Owings Mills,
MD Baltimore Co. United States |
Painters Mill Rd. / Lyons Mill Rd. (39.39425, -76.78747) |
Other Existing |
All-Way Yield Unknown |
3 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
||
|
New Market,
MD Frederick Co. United States |
Eaglehead Dr. / Pecking Stone St. (39.39397, -77.30943) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 24.3840 |
Other (At-Grade) Single-lane w/ Traversable Central Island |
2016 | Year Completed estimated (2015-2017). |
|
Liberty Township,
OH Butler Co. United States |
Berkshire Pl. / Amberly Ct. / Wiltshire Ct. (39.39282, -84.34687) |
Other Existing |
All-Way Stop None |
4 Approaches 0 Driveways 27.6898 |
Other (At-Grade) Single-Lane |
2002 | Stop control and no splitter islands. ICD estimated from Google Maps linework. |
|
Owings Mills,
MD Baltimore Co. United States |
(unknown) (39.39269, -76.78657) |
Other Existing |
Unknown Unknown |
2 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
||
|
Ballenger Creek,
MD Frederick Co. United States |
Jefferson Technology Pkwy. / (unknown) (39.39256, -77.45666) |
Unknown Existing |
Unknown Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Unknown |
||
|
Ballenger Creek,
MD Frederick Co. United States |
Jefferson Technology Pkwy. / Jefferson Station Blvd. (39.39223, -77.45291) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 42.6720 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
2014 | Year Completed estimated (2013-2015). |
|
Castle Rock,
CO Douglas Co. United States |
Rising Sun Dr. / Autumn Sage St. (39.39210, -104.82736) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 47.0731 |
Other (At-Grade) Single-Lane |
2005 | Year Completed estimated (2004-2007). ICD estimated from Google Maps linework. |
|
Owings Mills,
MD Baltimore Co. United States |
Ballard Green Dr. / Wilson Shannon Dr. / Julia Ln. (39.39162, -76.80439) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 36.5760 |
Other (At-Grade) Single-Lane |
2017 | Year Completed estimated (2017-2018). |
|
Liberty Twp,
OH Butler Co. United States |
Princeton Rd. / Yankee Rd. (39.39133, -84.38398) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 35.9975 |
Other (At-Grade) Single-Lane |
2017 | Opened in August 2017. ICD estimated from Google Maps linework. |
|
Liberty Township,
OH Butler Co. United States |
Hughes Woods Ln. / Hughes Ridge Ln. (39.39099, -84.40464) |
Other Existing |
All-Way Yield None |
3 Approaches 0 Driveways 43.3818 |
Other (At-Grade) Single-Lane |
1998 | No splitter islands. ICD estimated from Google Maps linework. |
|
Linganore,
MD Frederick Co. United States |
Mussetter Rd. / Whiterose Dr. / Whiterose Way (39.39008, -77.29747) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 41.1480 |
Other (At-Grade) Single-Lane |
2002 | Painted splitter islands on three legs. Year Completed estimated (1988-2005). |
|
Linganore,
MD Frederick Co. United States |
Old National Pike / Eaglehead Dr. (39.38995, -77.31098) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 50.2920 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
2008 | South leg stubbed. Constructed initially as single-lane roundabout in 2007-2008. Expanded into two-lane roundabout 2016-2018. |
|
Williamstown,
WV Wood Co. United States |
Highland Ave. (WV 14) / Williamstown Pike (WV 31) (39.38888, -81.44158) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
2020 | https://www.newsandsentinel.com/news/local-news/2020/11/williamstown-roundabout-opens-to-traffic/ https://www.youtube.com/watch?v=iusQxGx9zLA |
|
Basalt,
CO Eagle Co. United States |
Willits Ln. / E Valley Rd. (39.38865, -107.08520) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 38.7680 |
Other (At-Grade) Single-Lane |
2011 | https://www.aspentimes.com/news/willits-lane-roundabout-due-for-work/ https://www.gouldconstruction.com/willits-lane-east-valley-road-roundabout-2/ ICD estimated from Google Maps linework. |
|
Pikesville,
MD Baltimore Co. United States |
Travertine Dr. (39.38721, -76.68990) |
Other Existing |
Unknown Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Unknown |
Parking along circulatory roadway; pedestrian access to central island. | |
|
Liberty Township,
OH Butler Co. United States |
Princeton Rd. / Maud Hughes Rd. (39.38674, -84.41100) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 39.6240 |
Other (At-Grade) Single-Lane |
2023 | This is Butler County's 41st roundabout. It opened November 16th, 2023. https://www.bceo.org/news/2023/03/princeton-rd-roundabout-bridge-construction-begins/ |
|
Castle Rock,
CO Douglas Co. United States |
Autumn Sage St. / Copper Cloud Dr. / Trail Stone Cir. (39.38614, -104.82199) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 57.2310 |
Other (At-Grade) Single-Lane |
2005 | Year Completed estimated (2005-2006). ICD estimated from Google Maps linework. |
|
Mount Washington,
MD Baltimore Co. United States |
Quarry Lake Dr. / Stone Cliff Dr. (39.38398, -76.69603) |
Other Existing |
Other Unknown |
2 Approaches 1 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
Uncontrolled entry on southeast leg. | |
|
Frederick,
MD Frederick Co. United States |
Jefferson Pike (MD 180) / Mt Zion Rd. (39.38286, -77.48054) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 36.9250 |
Other (At-Grade) Single-Lane |
2019 | Opened August 2019. https://www.fredericknewspost.com/news/politics_and_government/public_safety/md-roundabout-opened/article_e67c26f7-ac5c-5931-b2e0-9e68faaa77d7.html ICD estimated from Google Maps linework. |
|
Castle Rock,
CO Douglas Co. United States |
N Rocky View Rd. / Valley View Rd. / High Point Rd. (39.38189, -104.81125) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 62.4840 |
Other (At-Grade) Single-Lane |
2016 | Year Completed estimated (2015-2017). |
|
Ballenger Creek,
MD Frederick Co. United States |
Holiday Dr. / Spectrum Dr. (39.38178, -77.40206) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 44.1960 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
2008 | Left turn lane trap in circulatory roadway. |
|
Fairfield Township,
OH Butler Co. United States |
Hamilton Mason Rd. / Hancock Ave. / Grand Blvd. / Tuley Rd. / Tylersville Rd. (39.38134, -84.53572) |
Roundabout Existing |
All-Way Yield None |
5 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
2022 | https://www.journal-news.com/news/five-points-roundabout-construction-to-happen-in-2022-in-hamilton/XYJYRDXKBVEK7DSQ7RPFT7RNFA/ |
|
Ijamsville,
MD Frederick Co. United States |
Royal Saint Andrews Pl. / Quail Creek Pl. (39.38039, -77.30788) |
Other Existing |
Unknown Unknown |
3 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Unknown |
||
|
Castle Rock,
CO Douglas Co. United States |
Autumn Sage St. / Valley View Dr. (39.38026, -104.81919) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 62.4840 |
Other (At-Grade) Single-Lane |
2016 | Year Completed estimated (2015-2017). |
|
Hamilton,
OH Butler Co. United States |
Hamilton Mason Rd. / Hamilton Enterprise Park Dr. / Gilmore Rd. (39.37927, -84.51743) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 40.6196 |
Other (At-Grade) Single-Lane |
2019 | Existing Gilmore Road was relocated to align with existing Hamilton Enterprise Park Dr. A single-lane modern roundabout with 150' inscribed diameter. ICD estimated from Google Maps linework. |
|
Mason,
OH Warren Co. United States |
Mason Montgomery Rd. / Bethany Rd. (39.37924, -84.30723) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 49.8513 |
Other (At-Grade) Single-Lane |
2015 | Right turn lanes on all approaches, expandable to 2 lanes. ICD estimated from Google Maps linework. |
|
Sykesville,
MD Carroll Co. United States |
Smithfield Ave. / Warfield Ave. (39.37673, -76.96410) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 47.0835 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
2007 | Elliptical shape. ICD estimated from Google Maps linework. |
|
Castle Highlands,
CO Douglas Co. United States |
Wolfensberger Rd. / Plum Creek Pkwy. / Coachline Rd. (39.37564, -104.88568) |
Roundabout Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 51.8160 |
Other (At-Grade) Multilane (2 Lane, 2x2 max) |
2018 | Year Completed estimated (2017-2019). |
|
Fairfield Township,
OH Butler Co. United States |
Hamilton Mason Rd. / Liberty Fairfield Rd. (39.37527, -84.48046) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 40.6219 |
Other (At-Grade) Single-Lane |
2008 | Since completion, has reduced accidents by 80%. Replaced two offset T intersections. Previously controlled by two-way stop Functional Class: Major Collector ICD estimated from Google Maps linework. |
|
Liberty Township,
OH Butler Co. United States |
SR 129 / Cox Rd. / Veterans Blvd. (39.37289, -84.36015) |
Roundabout Existing |
All-Way Yield Rectangular Rapid Flashing Beacon (RRFB) |
4 Approaches 0 Driveways 62.4840 |
Other (At-Grade) Multilane (2 Lane, 2x2 max) |
2022 | New roundabout partially opened in November 2022. Full operation is scheduled in mid-December 2022. SR 129 highway was extended to Cox Road (local road) and new alignment (Veterans Blvd) was constructed to help alleviate traffic congestion and safety issues involving Liberty Way interchange with I-75. |
|
Hamilton,
OH Butler Co. United States |
Hamilton Mason Rd. / LeSourdsville West Chester Rd. (39.37223, -84.42497) |
Roundabout Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 40.6237 |
Other (At-Grade) Single-Lane |
2018 | Opened August 2018. ICD estimated from Google Maps linework. |