28735 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
Ellicott City, MD
Howard Co.
United States
Hillsborough Rd. / English Morning Ln.
(39.25046, -76.79507)
Other
Existing
Unknown
Unknown
3 Approaches
0 Driveways
0.0000
Other (At-Grade)
Single-Lane
No splitter islands.
Ellicott City, MD
Howard Co.
United States
Academy Rd. / Hillsborough Rd. / Chews Vineyard
(39.24993, -76.78913)
Other
Existing
Unknown
Unknown
4 Approaches
0 Driveways
0.0000
Other (At-Grade)
Single-Lane
No splitter islands.
West Friendship, MD
Howard Co.
United States
Folly Quarter Rd. / Sheppard Ln. / Homewood Rd.
(39.24979, -76.93188)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
33.5280
Other (At-Grade)
Single-Lane
2004 Year Completed estimated (2002-2005).
Cagliari, Sardinia
Cagliari
Italy
Via Giuseppe Peretti / Via Stamira / SS131dir (Circonvallazione Quadrifoglio) Ramps
(39.24951, 9.11493)
Roundabout
Existing
All-Way Yield
Unknown
4 Approaches
0 Driveways
Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified)
Ellicott City, MD
Howard Co.
United States
Columbia Rd. / Hemlock Cone Way / Kingscup Ct.
(39.24949, -76.83326)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
21.3360
Other (At-Grade)
Single-lane w/ Traversable Central Island
2019
Catonsville, MD
Baltimore Co.
United States
UMBC Blvd. / Research Park Dr.
(39.24874, -76.71580)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
44.3950
Other (At-Grade)
Single-Lane
2015 Elliptical shape. ICD estimated from Google Maps linework.
Catonsville, MD
Baltimore Co.
United States
Research Park Dr.
(39.24868, -76.71406)
Other
Existing
Uncontrolled
Unknown
2 Approaches
0 Driveways
0.0000
Other (At-Grade)
Single-Lane
Montgomery, OH
Hamilton Co.
United States
Pfeiffer Rd. / Deerfield Rd.
(39.24866, -84.35092)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
0.0000
Other (At-Grade)
Single-Lane
2023 https://www.facebook.com/story.php/?story_fbid=602452425250045&id=100064558789263
Kansas City, MO
Clay Co.
United States
N Sycamore Ave. / N 85th Terr. / Shoal Creek Valley Dr.
(39.24733, -94.48586)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
60.9600
Other (At-Grade)
Single-Lane
2002 No truck apron. Year Completed estimated (1997-2003).
Quartucciu, Sardinia
Cagliari
Italy
Via delle Serre / Via Segre
(39.24684, 9.16501)
Roundabout
Existing
All-Way Yield
Unknown
3 Approaches
0 Driveways
Other (At-Grade)
Multilane (2 Lane, 2x1 max)
Kansas City, MO
Clay Co.
United States
NE Shoal Creek Valley Dr. / (unknown)
(39.24673, -94.47459)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
36.5760
Other (At-Grade)
Single-Lane
2020
Liberty, MO
Clay Co.
United States
N Stewart Rd. / College St. / Conistor Ln. / (parking)
(39.24629, -94.45100)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
36.5760
Other (At-Grade)
Single-Lane
2002 Year Completed estimated (1997-2003).
Liberty, MO
Clay Co.
United States
College St. / N Blue Jay Dr.
(39.24628, -94.44898)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
36.5760
Other (At-Grade)
Single-Lane
2005
Kansas City, MO
Clay Co.
United States
N Booth Ave. / NE Shoal Creek Valley Dr. / Commercial Dr.
(39.24626, -94.47674)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
44.1960
Other (At-Grade)
Multilane (2 Lane, 2x1 max)
2020 Yield-controlled right-turn bypass lane on west leg. Year Completed estimated (2020-20210.
Ellicott City, MD
Howard Co.
United States
Nightingale Ct. / Academy Rd.
(39.24564, -76.79297)
Other
Existing
Unknown
Unknown
2 Approaches
0 Driveways
0.0000
Other (At-Grade)
Unknown
West Friendship, MD
Howard Co.
United States
Castlebridge Rd. / Hunter's View Rd.
(39.24552, -76.90189)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
42.6720
Other (At-Grade)
Single-Lane
2006
Dundalk, MD
Baltimore Co.
United States
Dundalk Ave. / Sollers Point Rd.
(39.24534, -76.50786)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
24.9734
Other (At-Grade)
Single-Lane
2007 ICD estimated from Google Maps linework.
Liberty, MO
Clay Co.
United States
S Stewart Rd. / (parking)
(39.24344, -94.45337)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
33.5277
Other (At-Grade)
Single-Lane
2016 Add-lane right-turn bypass lane on south leg.
Blue Ash, OH
Hamilton Co.
United States
Plainfield Rd. / Parkview Dr.
(39.24335, -84.39561)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
18.4993
Other (At-Grade)
Single-Lane
2018 http://www.blueash.com/departments/public_works/roundabout_safety.php ICD estimated from Google Maps linework.
Kansas City, MO
Clay Co.
United States
NE 82nd Terr. / N Booth Ave.
(39.24250, -94.47752)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
53.3400
Other (At-Grade)
Multilane (2 Lane, unspecified)
2008 South leg stubbed.
Cagliari, Sardinia
Cagliari
Italy
Via Edward Jenner / (connector to SS131dir)
(39.24238, 9.11694)
Other
Existing
All-Way Stop
Unknown
3 Approaches
0 Driveways
Other (At-Grade)
Multilane (2 Lane, unspecified)
Clarksburg, MD
Montgomery Co.
United States
Granite Rock Rd. / Grand Elm St.
(39.24126, -77.26647)
Other
Existing
Unknown
Unknown
4 Approaches
0 Driveways
0.0000
Other (At-Grade)
Single-Lane
No splitter islands.
Blue Ash, OH
Hamilton Co.
United States
Malsbary Rd. / Alliance Rd.
(39.23916, -84.38188)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
34.2258
Other (At-Grade)
Single-Lane
2017 http://www.blueash.com/departments/public_works/roundabout_safety.php ICD estimated from Google Maps linework.
Kings Beach, CA
Placer Co.
United States
N Lake Blvd. / Bear Ave. / Brook Ave. / (beach parking)
(39.23681, -120.02465)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
24.0514
Other (At-Grade)
Single-Lane
2014 ICD estimated from Google Maps linework.
Clarksburg, MD
Montgomery Co.
United States
Saint Clair Rd. / Timber Creek Ln. / Brewers Tavern Terrace / (unknown)
(39.23680, -77.27531)
Other
Existing
Unknown
Unknown
5 Approaches
0 Driveways
0.0000
Other (At-Grade)
Single-Lane
No splitter islands.
Kings Beach, CA
Placer Co.
United States
N Lake Blvd. / Coon St.
(39.23589, -120.02207)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
29.6021
Other (At-Grade)
Single-Lane
2014 ICD estimated from Google Maps linework.
Grass Valley, CA
Nevada Co.
United States
Sierra College Dr. / Litton Dr. / Robert Ross Way
(39.23445, -121.05200)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
32.3780
Other (At-Grade)
Single-Lane
2003 ICD estimated from Google Maps linework.
Grass Valley, CA
Nevada Co.
United States
Olympia Park Cir. / (parking lot)
(39.23248, -121.03766)
Roundabout
Existing
All-Way Yield
None
2 Approaches
1 Driveways
22.8600
Other (At-Grade)
Single-lane w/ Traversable Central Island
2014 All paint, no raised islands. Opened November 2014. Previously, Olympia Park Circle made a gentle 90-degree curve. Traffic entering from stop-controlled driveway had trouble making left turn as they had to proceed 60 feet to reach the safety of centerline without knowing if approaching vehicle on their left was going to enter the driveway or curve left in front of them. Now about 50% of driveway exits cheat across the central island, but it works just fine. After six years with no raised islands, a central island was built on 3 Nov 2020: 20 feet in diameter, 4 inches high, designed for asphalt but built with PCC.
Clarksville, MD
Howard Co.
United States
Northern Bell Way / Bee Frances Way / Catherine Close Rd.
(39.23232, -76.97091)
Other
Existing
Unknown
Unknown
3 Approaches
1 Driveways
0.0000
Other (At-Grade)
Single-Lane
Clarksburg, MD
Montgomery Co.
United States
Little Seneca Pkwy. / Meadow Mist Rd.
(39.23154, -77.24309)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
30.5290
Other (At-Grade)
Single-Lane
2011 ICD estimated from Google Maps linework.
Kansas City, MO
Clay Co.
United States
NE Flintlock Rd / NE 76th St
(39.23094, -94.47007)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
57.3581
Other (At-Grade)
Multilane (2 Lane, unspecified)
2013 ICD estimated from Google Maps linework.
Blue Ash, OH
Hamilton Co.
United States
Plainfield Rd. / Peppermill Ln. / Reed-Hartman Hwy.
(39.23083, -84.39482)
Roundabout
Existing
All-Way Yield
Rectangular Rapid Flashing Beacon (RRFB)
4 Approaches
0 Driveways
0.0000
Other (At-Grade)
Multilane (2 Lane, 2x1 max)
2023 RRFB on all four legs. https://www.blueash.com/departments/public_works/hunt_plainfield.php
Quartu Sant’Elena, Sardinia
Cagliari
Italy
SP17 / SP17ter / Viale Europa / Via Flume
(39.23079, 9.22086)
Roundabout
Existing
All-Way Yield
Unknown
4 Approaches
0 Driveways
Other (At-Grade)
Multilane (2 Lane, 2x2 max)
Clarksburg, MD
Montgomery Co.
United States
Little Seneca Pkwy. / Snowden Farm Pkwy.
(39.22989, -77.25280)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
28.6795
Other (At-Grade)
Multilane (2 Lane, unspecified)
2012 Year Completed estimated (2011-2013). ICD estimated from Google Maps linework.
Clarksville, MD
Howard Co.
United States
Linden Church Rd. / MD 32 NB Ramps
(39.22942, -76.97263)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
39.6240
Freeway Ramps (Grade-Separated)
Single-Lane
2013 Year Completed estimated (2011-2014).
Clarksville, MD
Howard Co.
United States
Watkins Bridge Ln. / Holly Creek Ln.
(39.22939, -76.94583)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
30.4800
Other (At-Grade)
Single-Lane
2010
Clarksville, MD
Howard Co.
United States
Preakness Circle Ln. / Watkins Bridge Ln.
(39.22880, -76.94308)
Roundabout
Existing
All-Way Yield
None
3 Approaches
1 Driveways
30.4800
Other (At-Grade)
Single-Lane
2010
Clarksburg, MD
Montgomery Co.
United States
Clarksburg Rd. (MD 121) / (outlet mall entrance)
(39.22844, -77.28869)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
49.9588
Other (At-Grade)
Multilane (2 Lane, unspecified)
2015 ICD estimated from Google Maps linework.
Blue Ash, OH
Hamilton Co.
United States
Hunt Rd. / Plainfield Rd.
(39.22691, -84.39426)
Roundabout
Existing
All-Way Yield
Rectangular Rapid Flashing Beacon (RRFB)
4 Approaches
0 Driveways
53.0352
Other (At-Grade)
Multilane (2 Lane, 2x2 max)
2023 https://www.wcpo.com/news/local-news/hamilton-county/blue-ash/blue-ash-police-new-roundabout-while-confusing-some-is-reducing-crashes
Clarksburg, MD
Montgomery Co.
United States
Clarksburg Rd. (MD 121) / Cabin Branch Ave.
(39.22689, -77.29051)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
46.2592
Other (At-Grade)
Multilane (2 Lane, unspecified)
2015 ICD estimated from Google Maps linework.
Clarksville, MD
Howard Co.
United States
Running Fence Ln. / Preakness Circle Ln.
(39.22640, -76.94374)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
30.4800
Other (At-Grade)
Single-Lane
2010
Clarksburg, MD
Montgomery Co.
United States
Snowden Farm Pkwy. / Winding Woods Way
(39.22604, -77.24727)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
40.7086
Other (At-Grade)
Multilane (2 Lane, unspecified)
2012 Year Completed estimated (2011-2013). ICD estimated from Google Maps linework.
Blue Ash, OH
Hamilton Co.
United States
Hunt Rd. / (parking)
(39.22578, -84.39828)
Roundabout
Existing
All-Way Yield
Rectangular Rapid Flashing Beacon (RRFB)
3 Approaches
0 Driveways
36.5760
Other (At-Grade)
Single-Lane
2022 Opened February 2, 2022. https://www.blueash.com/departments/public_works/hunt_plainfield.php
Snowmass Village, CO
Pitkin Co.
United States
Brush Creek Rd. / Highline Rd.
(39.22541, -106.92049)
Roundabout
Existing
All-Way Yield
None
3 Approaches
1 Driveways
38.1000
Other (At-Grade)
Single-Lane
2006
Kansas City, MO
Platte Co.
United States
MO-45 (Tom Watson Pkwy.) / NW Brink-Myer Rd.
(39.22507, -94.75656)
Roundabout
Existing
All-Way Yield
Unknown
3 Approaches
0 Driveways
45.3352
Other (At-Grade)
Multilane (2 Lane, unspecified)
2017 ICD estimated from Google Maps linework.
Kansas City, MO
Platte Co.
United States
NW 72nd St. / NW Waukomis Dr. / N Green Hills Rd.
(39.22505, -94.62750)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
34.2327
Other (At-Grade)
Single-Lane
2012 Streetview car went through just after completion while two approaches were still blocked off. ICD estimated from Google Maps linework.
Kansas City, MO
Platte Co.
United States
NW 72nd St. / N Overland Dr.
(39.22495, -94.64044)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
0.0000
Other (At-Grade)
Single-Lane
2020 https://www.kcmo.gov/Home/Components/FacilityDirectory/FacilityDirectory/53/360?npage=2
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
Quartu Sant’Elena, Sardinia
Cagliari
Italy
Viale Lungomare del Golfo / Viale Cristoforo Colombo / (parking)
(39.22372, 9.19555)
Roundabout
Existing
All-Way Yield
Unknown
3 Approaches
1 Driveways
Other (At-Grade)
Multilane (2 Lane, 2x1 max)
Montgomery, OH
Hamilton Co.
United States
US 22 (Montgomery Rd.) / SR 126 (Ronald Reagan Cross Country Hwy.)
(39.22308, -84.35643)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
0.0000
Other (At-Grade)
Multilane (3+ Lane)
2021 Previously a grade-separated freeway interchange. https://m.facebook.com/CityofMontgomeryOhio/videos/352303629903240/
Stephenson, VA
Frederick Co.
United States
Northumberland Dr. / Churndash Way / Patchwork Dr.
(39.22289, -78.09317)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
36.5760
Other (At-Grade)
Single-Lane
2017 No pavement markings or splitter islands as of October 2017.
Liberty, MO
Clay Co.
United States
Liberty Dr / Flintrock Rd
(39.22231, -94.46337)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
40.7108
Other (At-Grade)
Single-Lane
2013 ICD estimated from Google Maps linework.
Kansas City, MO
Clay Co.
United States
Searcy Creek Pkwy. / NE Shoal Creek Pkwy.
(39.22229, -94.50338)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
77.7240
Other (At-Grade)
Multilane (2 Lane, unspecified)
2008
Grass Valley, CA
Nevada Co.
United States
E. Main St. / Idaho-Maryland Rd. / SR 20 WB Ramps
(39.22168, -121.05380)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
39.6240
Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified)
2008 Yield-controlled right-turn bypass lane on north leg with very shallow angle. Left-turn-only lane on east leg.
Columbia, MD
Howard Co.
United States
Vantage Point Rd.
(39.22074, -76.85392)
Other
Existing
Unknown
Unknown
3 Approaches
0 Driveways
0.0000
Other (At-Grade)
Unknown
Clarksburg, MD
Montgomery Co.
United States
Cabin Branch Ave. / Skimmer St.
(39.22020, -77.28435)
Roundabout
Existing
All-Way Yield
Unknown
4 Approaches
0 Driveways
45.7200
Other (At-Grade)
Multilane (2 Lane, 2x2 max)
2016 Year Completed estimated (2015-2017). Striping added 2019-2021.
Kansas City, MO
Platte Co.
United States
MO-45 (Tom Watson Pkwy.) / NW Union Chapel Rd. (MO K)
(39.21999, -94.73524)
Roundabout
Existing
All-Way Yield
Unknown
4 Approaches
0 Driveways
55.5165
Other (At-Grade)
Multilane (2 Lane, unspecified)
2010 ICD estimated from Google Maps linework.
Chestertown, MD
Kent Co.
United States
MD 20 / MD 291 / (parking lot)
(39.21863, -76.07913)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
47.1899
Other (At-Grade)
Single-Lane
2015 ICD estimated from Google Maps linework.
Kansas City, MO
Platte Co.
United States
NW Union Chapel Rd. / NW Brink-Meyer Rd.
(39.21830, -94.73579)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
28.6842
Other (At-Grade)
Single-Lane
2011 ICD estimated from Google Maps linework.
Clarksburg, MD
Montgomery Co.
United States
Little Seneca Pkwy. / Cabin Branch Ave.
(39.21654, -77.28310)
Roundabout
Existing
All-Way Yield
Unknown
4 Approaches
0 Driveways
45.7200
Other (At-Grade)
Multilane (2 Lane, 2x2 max)
2016 Year Completed estimated (2016-2017). Striping added 2019-2021.
Clarksburg, MD
Montgomery Co.
United States
Broadway Ave. / Little Seneca Pkwy.
(39.21646, -77.28540)
Roundabout
Existing
All-Way Yield
Unknown
3 Approaches
0 Driveways
45.7200
Other (At-Grade)
Multilane (2 Lane, 2x2 max)
2016 Year Completed estimated (2015-2017). Striping added 2019-2021.
Columbia, MD
Howard Co.
United States
Golden Straw Ln. / Davis Rd.
(39.21597, -76.81084)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
Other (At-Grade)
Single-lane w/ Traversable Central Island
2000 Completed April 28, 2000. Pedestrian ramps into circulatory roadway.
Cagliari, Sardinia
Cagliari
Italy
Via Lungo Saline / Via dell'Idrovora
(39.21551, 9.17084)
Roundabout
Existing
All-Way Yield
Unknown
3 Approaches
0 Driveways
Other (At-Grade)
Multilane (2 Lane, 2x1 max)
Clarksville, MD
Howard Co.
United States
Highland Rd. / Triadelphia Mill Rd.
(39.21551, -76.97698)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
36.5760
Other (At-Grade)
Single-Lane
2008
Sycamore Township, OH
Hamilton Co.
United States
Plainfield Rd. / Sycamore Rd.
(39.21534, -84.39192)
Roundabout
Existing
All-Way Yield
Unknown
3 Approaches
0 Driveways
37.9388
Other (At-Grade)
Single-Lane
2019 ICD estimated from Google Maps linework.
Columbia, MD
Howard Co.
United States
Harpers Farm Rd. / Campus Dr.
(39.21534, -76.88023)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
31.4614
Other (At-Grade)
Single-Lane
2003 Originally had 4 legs. ICD estimated from Google Maps linework.
Columbia, MD
Howard Co.
United States
Golden Straw Ln. / Long Meadow Ct.
(39.21441, -76.81085)
Traffic Calming Circle
Existing
Other
None
3 Approaches
0 Driveways
99.0123
Other (At-Grade)
Single-Lane
2000 Yield control only on west leg. ICD estimated from Google Maps linework.
Clarksburg, MD
Montgomery Co.
United States
Clarksburg Rd. / W Old Baltimore Rd.
(39.21396, -77.29731)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
42.6720
Other (At-Grade)
Single-Lane
2019 Year Completed estimated (2019-2020).
Gladstone, MO
Clay Co.
United States
NE Antioch Rd. / NE Pleasant Valley Rd.
(39.21369, -94.53468)
Roundabout
Existing
All-Way Yield
Unknown
3 Approaches
0 Driveways
34.2382
Other (At-Grade)
Single-Lane
2018 https://www.linecreekloudmouth.com/blog/street-improvements/ ICD estimated from Google Maps linework.
Parkville, MO
Platte Co.
United States
National Dr. / Ridge Rd.
(39.21333, -94.70781)
Other
Existing
Unknown
Unknown
3 Approaches
0 Driveways
49.9696
Other (At-Grade)
Single-Lane
Functional Class: Local ICD estimated from Google Maps linework.
Columbia, MD
Howard Co.
United States
Oakland Mills Rd. / MD 175 SB Ramps / (unknown)
(39.21308, -76.83456)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
36.5760
Freeway Ramps (Grade-Separated)
Single-Lane
2017 Year Completed estimated (2016-2017).
Columbia, MD
Howard Co.
United States
Charter Dr. / (parking)
(39.21273, -76.88310)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
27.4320
Other (At-Grade)
Single-Lane
2013 Converted from cul-de-sac. Year Completed estimated (2011-2014).
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.
Columbia, MD
Howard Co.
United States
Banneker Rd. / Cul-de-sac
(39.21141, -76.87041)
Traffic Calming Circle
Existing
Unknown
Unknown
3 Approaches
0 Driveways
17.5824
Other (At-Grade)
Single-Lane
Functional Class: Local ICD estimated from Google Maps linework.
Elkridge, MD
Howard Co.
United States
Elkridge Crossing Way / Doctor Patel Dr.
(39.21091, -76.72512)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
31.4634
Other (At-Grade)
Single-Lane
2007 East leg stubbed for future. ICD estimated from Google Maps linework.
Manhattan, KS
Riley Co.
United States
Gary Ave. / Candlewood Dr.
(39.21087, -96.61885)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
21.2841
Other (At-Grade)
Single-Lane
1997 Considered to be the First Modern Roundabout in the State of Kansas. Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Elkridge, MD
Howard Co.
United States
Toomey Ln. / Fairlee Rd.
(39.21083, -76.71160)
Roundabout
Existing
All-Way Yield
None
3 Approaches
2 Driveways
27.4320
Other (At-Grade)
Single-Lane
2002
Snowmass Village, CO
Pitkin Co.
United States
Brush Creek Rd. / Wood Rd. / Kearns Rd.
(39.21053, -106.94725)
Roundabout
Existing
All-Way Yield
Unknown
4 Approaches
0 Driveways
27.7620
Other (At-Grade)
Single-Lane
2016 Right-turn bypass lane on south leg. ICD estimated from Google Maps linework.
Parkville, MO
Platte Co.
United States
MO 45 (Tom Watson Pkwy.) / National Dr.
(39.21016, -94.70027)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
48.1210
Other (At-Grade)
Single-Lane
2000 Functional Class: Arterial ICD estimated from Google Maps linework.
Snowmass Village, CO
Pitkin Co.
United States
Wood Rd. / Carriage Way
(39.21000, -106.94756)
Roundabout
Existing
All-Way Yield
Unknown
3 Approaches
0 Driveways
40.7179
Other (At-Grade)
Single-lane w/ Traversable Central Island
2016 ICD estimated from Google Maps linework.
Kansas City, MO
Platte Co.
United States
Lewis St. / (parking access)
(39.20966, -94.68484)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
21.2845
Other (At-Grade)
Single-Lane
2005 ICD estimated from Google Maps linework.
Columbia, MD
Howard Co.
United States
Trotter Rd. / South Wind Cir.
(39.20956, -76.91891)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
23.1353
Other (At-Grade)
Single-Lane
1997 Functional Class: Collector. Year Completed estimated (1993-2001). ICD estimated from Google Maps linework.
Elkridge, MD
Howard Co.
United States
Toomey Ln. / Clements Ln.
(39.20950, -76.71291)
Other
Existing
Unknown
Unknown
2 Approaches
4 Driveways
0.0000
Other (At-Grade)
Unknown
No splitter islands.
Germantown, MD
Montgomery Co.
United States
Milestone Manor Ln. / Manor View Cir. / Milestone Manor Ct.
(39.20854, -77.24868)
Other
Existing
Unknown
Unknown
4 Approaches
0 Driveways
0.0000
Other (At-Grade)
Unknown
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.
Columbus, IN
Bartholomew Co.
United States
11th St. / Lindsey St. / Brown St.
(39.20836, -85.92443)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
44.4206
Other (At-Grade)
Multilane (2 Lane, unspecified)
2008 At-grade rail crossing on west leg (flashers, no gates). ICD estimated from Google Maps linework.
Kansas City, MO
Platte Co.
United States
NW 62nd Terrace / NW Prairie View Rd. / N Chatham Ave.
(39.20831, -94.64319)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
48.7680
Freeway Ramps (Grade-Separated)
Single-Lane
2021 https://www.kcmo.gov/Home/Components/FacilityDirectory/FacilityDirectory/95/360
Kansas City, MO
Platte Co.
United States
N Nevada Ave. / NW 62nd Pl.
(39.20830, -94.74611)
Other
Existing
Unknown
Unknown
4 Approaches
0 Driveways
0.0000
Other (At-Grade)
Single-Lane
Columbia, MD
Howard Co.
United States
Oakland Mills Rd. / Old Montgomery Rd.
(39.20788, -76.83157)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
38.1000
Other (At-Grade)
Single-Lane
2017
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.
Claycomo, MO
Clay Co.
United States
Ford Motor Plant No 4 Rd. / (parking)
(39.20602, -94.47845)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
45.7200
Other (At-Grade)
Multilane (2 Lane, unspecified)
2013 Year Completed estimated (2012-2013). Reconfiguration of factory entrance and parking circulation.
Germantown, MD
Montgomery Co.
United States
Milestone Manor Ln. / Stardrift Dr.
(39.20560, -77.25039)
Other
Existing
Unknown
Unknown
4 Approaches
0 Driveways
0.0000
Other (At-Grade)
Unknown
Columbia, MD
Howard Co.
United States
Tamar Dr. / Old Montgomery Rd.
(39.20533, -76.82822)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
30.4800
Other (At-Grade)
Single-Lane
2022 https://www.howardcountymd.gov/News090122c
Germantown, MD
Montgomery Co.
United States
Milestone Manor Ln. / Royal Crown Dr.
(39.20518, -77.25877)
Other
Existing
Unknown
Unknown
4 Approaches
0 Driveways
0.0000
Other (At-Grade)
Unknown
Cagliari, Sardinia
Cagliari
Italy
Viale Armando Diaz / Via Campioni d'Italia 1969-70 / Via dei Salinieri / Via Generale Stefano Cagna / Via della Pineta
(39.20491, 9.13802)
Roundabout
Existing
All-Way Yield
Unknown
5 Approaches
0 Driveways
Other (At-Grade)
Multilane (2 Lane, 2x1 max)
Clarksville, MD
Howard Co.
United States
Brighton Dam Rd. / Ten Oaks Rd.
(39.20491, -76.95455)
Roundabout
Existing
Unknown
Unknown
3 Approaches
0 Driveways
35.1680
Other (At-Grade)
Single-Lane
2008 ICD estimated from Google Maps linework.
Germantown, MD
Montgomery Co.
United States
Milestone Manor Ln. / Emerald Dr.
(39.20479, -77.25262)
Other
Existing
Unknown
Unknown
4 Approaches
0 Driveways
0.0000
Other (At-Grade)
Unknown
Germantown, MD
Montgomery Co.
United States
Crystal Rock Dr. / Century Blvd.
(39.20326, -77.27356)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
48.7680
Other (At-Grade)
Multilane (2 Lane, 2x2 max)
2015 Striping added 2019-2021. Inconsistent lane use markings between entry and circulatory roadway.
Parkville, MO
Platte Co.
United States
N Nevada Ave. / Thousand Oaks Pl.
(39.20318, -94.74726)
Other
Existing
Unknown
Unknown
4 Approaches
0 Driveways
0.0000
Other (At-Grade)
Single-Lane
Winchester, VA
Frederick Co.
United States
Campus Blvd. / SR 37 SB Ramps
(39.20215, -78.19348)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
41.1480
Freeway Ramps (Grade-Separated)
Single-Lane
2015 Right-turn merging bypass lane on east leg. Truck apron much wider than circulatory roadway. Year Completed estimated (2013-2017).