Roundabouts Database

29411 Results

Search by location, intersection, and comments with the Quick Search below. You can search all other attributes by clicking Advanced Search. Sort results by clicking the headers of any column. Click the Intersection name for a details and aerial view. Search results pages can be bookmarked. Results can be exported to KML for viewing in Google Earth.


Search Advanced Search Export as KML
City, State
County
Country 		Intersection
(Lat, Lng) 		Type
Status 		Control Type / Other Control Type Approaches / Driveways / ICD (m) Functional Class /
LaneType 		Year Completed Comments
Point of Rocks, MD
Frederick Co.
United States 		US 15 / Point of Rocks Rd.
(39.28643, -77.53096) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
47.1443 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2008 ICD estimated from Google Maps linework.
Oak Bluffs, MA
Dukes Co.
United States 		Barnes Rd / Edgartown Vineyard Haven Rd
(41.42083, -70.60172) 		Roundabout
Existing 		Unknown
None 		4 Approaches
0 Driveways
28.6589 		Other (At-Grade)
Single-Lane 		2013 ICD estimated from Google Maps linework.
Carmel, IN
Hamilton Co.
United States 		N Gray Rd. / E Smokey Row Rd. (E 136th St.)
(39.98556, -86.08969) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
36.6041 		Other (At-Grade)
Single-Lane 		2017 ICD estimated from Google Maps linework.
Carmel, IN
Hamilton Co.
United States 		Hazel Dell Pkwy. / E 116th St.
(39.95660, -86.07408) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
47.6055 		Other (At-Grade)
Multilane (3+ Lane) 		2017 ICD estimated from Google Maps linework.
Carmel, IN
Hamilton Co.
United States 		W 106th St. / Towne Rd.
(39.94132, -86.20314) 		Roundabout
Existing 		All-Way Yield
Rectangular Rapid Flashing Beacon (RRFB) 		4 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Multilane (2 Lane, 2x2 max) 		2017 RRFB added: https://content.govdelivery.com/accounts/INCARMEL/bulletins/37421df
Carmel, IN
Hamilton Co.
United States 		W Carmel Dr. / S Guilford Rd.
(39.96526, -86.14116) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
38.4457 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2017 ICD estimated from Google Maps linework.
Carmel, IN
Hamilton Co.
United States 		W Carmel Dr. / W City Center Dr.
(39.96562, -86.14400) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
43.0224 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2017 ICD estimated from Google Maps linework.
Carmel, IN
Hamilton Co.
United States 		W City Center Dr. / S Guilford Rd.
(39.96801, -86.14104) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
45.7669 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2017 ICD estimated from Google Maps linework.
Carmel, IN
Hamilton Co.
United States 		W City Center Dr. / S Range Line Rd.
(39.97069, -86.12696) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2017 Raised crosswalks.
Carmel, IN
Hamilton Co.
United States 		E 126th St. / Kinzer Ave.
(39.97112, -86.11843) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
32.9506 		Other (At-Grade)
Single-Lane 		2017 One approach stubbed off. ICD estimated from Google Maps linework.
Carmel, IN
Hamilton Co.
United States 		W City Center Dr. / N Pennsylvania St. / (hotel parking)
(39.96483, -86.15517) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
35.6998 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2016 Crosswalk on hotel parking leg is at entrance line. ICD estimated from Google Maps linework.
Carmel, IN
Hamilton Co.
United States 		E Smokey Row Rd. / Carey Rd.
(39.98591, -86.10820) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
25.6227 		Other (At-Grade)
Single-Lane 		2016 ICD estimated from Google Maps linework.
Carmel, IN
Hamilton Co.
United States 		S Range Line Rd. / Executive Rd.
(39.96334, -86.12687) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
33.8698 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2018 ICD estimated from Google Maps linework.
Carmel, IN
Hamilton Co.
United States 		Carey Rd. / Hawthorne Dr. W
(39.99353, -86.10848) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
34.7698 		Other (At-Grade)
Single-Lane 		2016 ICD estimated from Google Maps linework.
Carmel, IN
Hamilton Co.
United States 		S Range Line Rd. / W Elm St.-E Elm St.
(39.97526, -86.12709) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
30.4800 		Other (At-Grade)
Single-Lane 		2017 City of Carmel changed name of 4th St. SE to Elm St. in 2022.
Carmel, IN
Hamilton Co.
United States 		W 116th St. / Towne Rd.
(39.95572, -86.20253) 		Roundabout
Existing 		All-Way Yield
Rectangular Rapid Flashing Beacon (RRFB) 		4 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2017
Hudson, MA
Middlesex Co.
United States 		Washington St (Rte 85) / Central S / Main St (Rte 62)
(42.39127, -71.56985) 		Traffic Calming Circle
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
21.1699 		Other (At-Grade)
Single-Lane 		On street parking in circulatory roadway ICD estimated from Google Maps linework.
Lakewood, CO
Jefferson Co.
United States 		S Indiana St. / W Wesley Ave.
(39.67204, -105.16890) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
33.0944 		Other (At-Grade)
Single-Lane 		2008 ICD estimated from Google Maps linework.
Logan, UT
Cache Co.
United States 		E 500 N / N 600 E
(41.74069, -111.81931) 		Roundabout
Existing 		All-Way Yield
Rectangular Rapid Flashing Beacon (RRFB) 		4 Approaches
0 Driveways
36.5378 		Other (At-Grade)
Single-Lane 		2018 ICD estimated from Google Maps linework.
Fishers, IN
Hamilton Co.
United States 		E 96th St. / Lantern Rd.
(39.92738, -86.01380) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
53.3400 		Other (At-Grade)
Multilane (3+ Lane) 		2017 On boundary between Fishers and Indianapolis and between Hamilton County and Marion County.
Fishers, IN
Hamilton Co.
United States 		E 131st St. / Lantern Rd.
(39.97875, -86.01409) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
33.8622 		Other (At-Grade)
Single-Lane 		2012 Year Completed estimate (2009-2012). ICD estimated from Google Maps linework.
Cedar Park, TX
Williamson Co.
United States 		Lynnwood Trl. / E Park St.
(30.51423, -97.81197) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Single-Lane 		2002 Minimal splitter islands on two legs.
Cedar Park, TX
Williamson Co.
United States 		Crockett Rd. / Truman Ln.
(30.51700, -97.80960) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
42.6710 		Other (At-Grade)
Single-Lane 		2002 Minimal splitter islands.
Cedar Park, TX
Williamson Co.
United States 		Discovery Blvd. / Central Park Dr. / (parking access road)
(30.52554, -97.82136) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2004 Right-turn bypass lane on south leg. Year Completed estimated (2002-2005).
Fullerton, CA
Orange Co.
United States 		Starbuck St. / Hughes Dr.
(33.88227, -117.96367) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
26.7709 		Other (At-Grade)
Single-Lane 		2003 Painted splitter islands. Year Completed estimated (1994-2003). ICD estimated from Google Maps linework.
Fullerton, CA
Orange Co.
United States 		Nicolas Way / Hughes Dr.
(33.88107, -117.95884) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
23.7967 		Other (At-Grade)
Single-Lane 		2003 Painted splitter islands. Year Completed estimated (1994-2003). ICD estimated from Google Maps linework.
Amerige Heights, CA
Orange Co.
United States 		1919 W Malvern Ave
(33.87845, -117.96296) 		Other
Existing 		Other
Unknown 		3 Approaches
0 Driveways
26.7721 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Fullerton, CA
Orange Co.
United States 		Starbuck St. / Hetebrink St.
(33.88433, -117.96291) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.7532 		Other (At-Grade)
Single-Lane 		2003 Painted splitter islands. Year Completed estimated (1994-2003). ICD estimated from Google Maps linework.
Fullerton, CA
Orange Co.
United States 		Nicolas St. / Hetebrink St. / Benchley St.
(33.88314, -117.95815) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
23.7961 		Other (At-Grade)
Single-Lane 		2003 Painted splitter islands. Year Completed estimated (1994-2003). ICD estimated from Google Maps linework.
Fullerton, CA
Orange Co.
United States 		Benchley Dr. / Sheddon St.
(33.88638, -117.95555) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
20.8208 		Other (At-Grade)
Single-Lane 		2003 Painted splitter islands. ICD estimated from Google Maps linework.
Foxborough, MA
Norfolk Co.
United States 		Chestnut St / North St
(42.07460, -71.25933) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
27.4821 		Other (At-Grade)
Single-Lane 		2008 ICD estimated from Google Maps linework.
Dedham, MA
Norfolk Co.
United States 		Needham St / Vine Rock St
(42.26954, -71.18214) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
120.1954 		Other (At-Grade)
Single-Lane 		2004 No crosswalks ICD estimated from Google Maps linework.
Belmont, MA
Middlesex Co.
United States 		Marsh St / Prospect St
(42.40767, -71.18126) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
2 Driveways
45.7200 		Other (At-Grade)
Single-Lane 		Year Completed unknown. No changes from original configuration.
Northampton, MA
Hampshire Co.
United States 		Pleasant St (US 5) / Conz St
(42.31150, -72.62438) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
30.0288 		Other (At-Grade)
Single-Lane 		2015 ICD estimated from Google Maps linework.
Northampton, MA
Hampshire Co.
United States 		Main St (Rte 9) / Bridge Rd
(42.34356, -72.68114) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
32.6618 		Other (At-Grade)
Single-Lane 		2011 ICD estimated from Google Maps linework.
Millbury, MA
Worcester Co.
United States 		Main St / Elmwood St / Elm St / Faron Cir / Rte 146 Ramps
(42.18731, -71.76704) 		Roundabout
Existing 		All-Way Yield
None 		5 Approaches
0 Driveways
33.6278 		Freeway Ramps (Grade-Separated)
Single-Lane 		2018 ICD estimated from Google Maps linework.
Millbury, MA
Worcester Co.
United States 		Elm St / Elm Ct / Rte 146 Ramps
(42.18783, -71.76618) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
21.2384 		Freeway Ramps (Grade-Separated)
Single-lane w/ Traversable Central Island 		2018 ICD estimated from Google Maps linework.
Rockland, MA
Plymouth Co.
United States 		Bill Delahunt Pkwy / Union St
(42.15400, -70.92708) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
49.5828 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2012 ICD estimated from Google Maps linework.
Weymouth, MA
Norfolk Co.
United States 		Patriot Pkwy / Marker St
(42.15310, -70.94390) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
41.6148 		Other (At-Grade)
Single-Lane 		2017 ICD estimated from Google Maps linework.
Gardner, MA
Worcester Co.
United States 		Rte 2 Ramps / Pearson Blvd
(42.56420, -71.97920) 		Rotary
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
137.2249 		Freeway Ramps (Grade-Separated)
Single-Lane 		ICD estimated from Google Maps linework.
Amherst, MA
Hampshire Co.
United States 		Pleasant St / Governors Dr / Eastman Ln
(42.39522, -72.52693) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
31.7529 		Other (At-Grade)
Single-Lane 		2011 ICD estimated from Google Maps linework.
Amherst, MA
Hampshire Co.
United States 		E Pleasant St / Triangle St
(42.38156, -72.51932) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
27.3487 		Other (At-Grade)
Single-Lane 		2017 ICD estimated from Google Maps linework.
Amherst, MA
Hampshire Co.
United States 		West St (Rte 116) / W Bay Rd
(42.31886, -72.52762) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
45.9211 		Other (At-Grade)
Single-Lane 		2011 Side-by-side roundabouts replacing two T-intersections ICD estimated from Google Maps linework.
Amherst, MA
Hampshire Co.
United States 		Bay Rd / West St (Rte 116)
(42.31938, -72.52627) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
51.2193 		Other (At-Grade)
Single-Lane 		2011 Side-by-side roundabouts replacing two T-intersections ICD estimated from Google Maps linework.
South Hadley, MA
Hampshire Co.
United States 		US 202 (Purple Heart Dr.) / N Main St.
(42.22171, -72.60281) 		Rotary
Existing 		All-Way Yield
None 		5 Approaches
0 Driveways
292.6080 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		Oval shaped. ICD 960 ft x 640 ft.
Springfield, MA
Hampden Co.
United States 		Springfield St / Hamburg St / Rimmon Ave
(42.13225, -72.60011) 		Traffic Calming Circle
Existing 		Other
None 		4 Approaches
0 Driveways
27.4571 		Other (At-Grade)
Single-Lane 		Hamburg St stop-controlled ICD estimated from Google Maps linework.
Northfield Township, MI
Washtenaw Co.
United States 		N Territorial Rd. / US 23 NB Ramps
(42.37969, -83.75634) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
39.6240 		Freeway Ramps (Grade-Separated)
Single-Lane 		2017 Merging right-turn bypass lane on east leg.
Northfield Township, MI
Washtenaw Co.
United States 		N Territorial Rd. / US 23 SB Ramps
(42.37952, -83.75786) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
39.6240 		Freeway Ramps (Grade-Separated)
Single-Lane 		2017 Merging right-turn bypass lane on west leg.
Springfield, IL
Sangamon Co.
United States 		W Iles Ave. / Archer Elevator Rd.
(39.77083, -89.73465) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
34.8829 		Other (At-Grade)
Single-Lane 		2017 ICD estimated from Google Maps linework.
Freeport, IL
Stephenson Co.
United States 		W Pearl City Rd. / Kiwanis Dr. / S Forest Rd.
(42.28237, -89.66744) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
37.1116 		Other (At-Grade)
Single-Lane 		2013 ICD estimated from Google Maps linework.
Colts Neck Township, NJ
Monmouth Co.
United States 		Crine Rd. / Heulitt Rd. / Dutch Lane Rd.
(40.31080, -74.20457) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
47.3580 		Other (At-Grade)
Single-Lane 		2015 Year Completed estimated (2013-2016). ICD estimated from Google Maps linework.
Carmel, IN
Hamilton Co.
United States 		N Gray Rd. / E 126th St.
(39.97120, -86.08950) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
36.6118 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2018 ICD estimated from Google Maps linework.
South Fulton, GA
Fulton Co.
United States 		Cascade-Palmetto Hwy (GA154) / Cedar Grove Rd / Ridge Rd
(33.61907, -84.67141) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
40.7770 		Other (At-Grade)
Single-Lane 		2014 ICD estimated from Google Maps linework.
Windsor, CA
Sonoma Co.
United States 		Old Redwood Hwy / Market St
(38.54956, -122.81353) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
34.5598 		Other (At-Grade)
Single-Lane 		2015 ICD estimated from Google Maps linework.
Windsor, CA
Sonoma Co.
United States 		Old Redwood Hwy / Windsor Rd
(38.55271, -122.81661) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
31.7562 		Other (At-Grade)
Single-Lane 		2016 ICD estimated from Google Maps linework.
Amesbury, MA
Essex Co.
United States 		Friend St / School St (Rte 150) / Allens Ct
(42.85615, -70.93410) 		Roundabout
Existing 		Other
None 		4 Approaches
0 Driveways
26.2656 		Other (At-Grade)
Single-Lane 		2001 North leg stop-controlled. Fire station on south leg. Resurfaced on 2017. ICD estimated from Google Maps linework.
Amesbury, MA
Essex Co.
United States 		Market St (Rte 150) / Elm St / Main St (Rte 150) / High St
(42.85794, -70.93010) 		Traffic Calming Circle
Existing 		Other
None 		4 Approaches
0 Driveways
13.1324 		Other (At-Grade)
Single-Lane 		On-Street parking in the traffic circle ICD estimated from Google Maps linework.
Newburyport, MA
Essex Co.
United States 		Newburyport Turnpike (US 1) / State St
(42.79893, -70.87539) 		Rotary
Existing 		All-Way Yield
None 		3 Approaches
5 Driveways
74.4880 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		No Ped facilities ICD estimated from Google Maps linework.
Gloucester, MA
Essex Co.
United States 		Washington St / Middle St
(42.61204, -70.66700) 		Traffic Calming Circle
Existing 		Uncontrolled
None 		4 Approaches
0 Driveways
25.4902 		Other (At-Grade)
Single-Lane 		Pavement markings done around 2013, on-street parking at traffic circle ICD estimated from Google Maps linework.
Georgetown, DE
Sussex Co.
United States 		Zoar Rd. / Bethesda Rd. / Speedway Rd.
(38.65384, -75.36140) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
41.9711 		Other (At-Grade)
Single-Lane 		2017 Replaced two closely spaced TWSC intersections. ICD estimated from Google Maps linework.
Georgetown, DE
Sussex Co.
United States 		The Circle (Georgetown Circle)
(38.69005, -75.38587) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
66.1876 		Other (At-Grade)
Single-Lane 		1791 New town built as county seat centered on circle instead of more traditional square. Pedestrian access to center island. Parking at buildings on the circle. No raised splitter islands. ICD estimated from Google Maps linework.
Wakefield, MA
Middlesex Co.
United States 		Rte 129 (Salem St.-Lowell St.) / Haverhill St. / I-95 Ramps
(42.52541, -71.08090) 		Rotary
Existing 		All-Way Yield
None 		5 Approaches
0 Driveways
0.0000 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		Pavement markings improvement in 2016.
Swampscott, MA
Essex Co.
United States 		Monument Ave / Elmwood Rd
(42.46952, -70.91737) 		Traffic Calming Circle
Existing 		All-Way Stop
None 		4 Approaches
0 Driveways
35.2392 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Lynn, MA
Essex Co.
United States 		Western Ave (Rte 107) / Federal St / South St / Market Square
(42.46260, -70.96575) 		Roundabout
Existing 		All-Way Yield
Unknown 		5 Approaches
0 Driveways
54.6268 		Other (At-Grade)
Single-Lane 		2017 ICD estimated from Google Maps linework.
East Boston, MA
Suffolk Co.
United States 		Saratoga St / Boardman St / Ford St
(42.38701, -71.00805) 		Traffic Calming Circle
Existing 		Other
None 		4 Approaches
0 Driveways
25.5821 		Other (At-Grade)
Single-Lane 		control type: Ford St and Boardman St all-way stop On-street parking on both sides. ICD estimated from Google Maps linework.
Everett, MA
Middlesex Co.
United States 		Revere Beach Pkwy. (Rte 16) / Mystic View Rd. / Santilli Hwy
(42.40238, -71.06892) 		Signalized Roundabout/Circle
Existing 		Signal
None 		5 Approaches
0 Driveways
155.4480 		Other (At-Grade)
Multilane (3+ Lane) 		Revere Beach Pkwy extends through the rotary. ICD 560 ft x 460 ft.
Malden, MA
Middlesex Co.
United States 		Fellsway E / Highland Ave
(42.43419, -71.08356) 		Traffic Calming Circle
Existing 		One-Way/Two-Way Stop
None 		4 Approaches
0 Driveways
24.6814 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		ICD estimated from Google Maps linework.
Medford, MA
Middlesex Co.
United States 		Highland Ave. / Woodland Rd. / Elm St.
(42.44247, -71.09392) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
53.3400 		Other (At-Grade)
Single-Lane 		2015 Added roundabout style pavement markings on approaches and definition of circulating roadway in approx. 2015. Right-turn-only lane and two-lane exit on north leg.
Somerville, MA
Middlesex Co.
United States 		Alewife Brook Pkwy (Rte 16) / Powder House Blvd
(42.40871, -71.13069) 		Rotary
Existing 		Other
None 		3 Approaches
6 Driveways
73.1924 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		Powder House Blvd left turn must yield to the SB entering traffic. ICD estimated from Google Maps linework.
Somerville, MA
Middlesex Co.
United States 		Powder House Square [Powder House Blvd. / Broadway / College Ave. / Werner St.]
(42.40114, -71.11677) 		Roundabout
Existing 		All-Way Yield
None 		6 Approaches
0 Driveways
70.1040 		Other (At-Grade)
Single-Lane 		2021 Originally 2-lane traffic circle with signal control on all entries and central island originally accessible for pedestrians. Converted to a single-lane roundabout in 2021 using only signing, striping, and raised markers. As of March 2022, all signals (including pedestrian signals) have been covered.
Winchester, MA
Middlesex Co.
United States 		Main St / Mt Vernon St / Church St / Park St / Laraway Rd
(42.45281, -71.13716) 		Rotary
Existing 		Uncontrolled
Pedestrian Signal (red-yellow-green to drivers) 		5 Approaches
0 Driveways
47.5856 		Other (At-Grade)
Single-Lane 		Improved ped crossings (markings) approx. 2001. Ped access to train station nearby. Bike racks. on-street parking on circular roadway. ICD estimated from Google Maps linework.
Bel Air South, MD
Harford Co.
United States 		S Tollgate Rd. / Plumtree Rd.
(39.50070, -76.33349) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
31.3332 		Other (At-Grade)
Single-Lane 		2016 ICD estimated from Google Maps linework.
Bel Air South, MD
Harford Co.
United States 		S Tollgate Rd. / W Ring Factory Rd.
(39.50873, -76.34550) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
28.5652 		Other (At-Grade)
Single-Lane 		2006 Year Completed estimated (2005-2007). ICD estimated from Google Maps linework.
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.
Bel Air North, MD
Harford Co.
United States 		Moores Mill Rd. / Southampton Rd.
(39.54847, -76.33536) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
27.6279 		Other (At-Grade)
Single-Lane 		2010 ICD estimated from Google Maps linework.
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.
Pueblo, CO
Pueblo Co.
United States 		N Purcell Rd. / E Platteville Blvd.
(38.35647, -104.69429) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
33.7158 		Other (At-Grade)
Single-Lane 		2014 ICD estimated from Google Maps linework.
Franklin Lakes, NJ
Bergen Co.
United States 		Franklin Lake Rd. / High Mountain Rd.
(40.99348, -74.21235) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.2409 		Other (At-Grade)
Single-Lane 		2014 Upgraded from a neighborhood traffic circle in 2014 ICD estimated from Google Maps linework.
Belmont, MA
Middlesex Co.
United States 		Orchard St / Stone St
(42.39213, -71.16707) 		Traffic Calming Circle
Existing 		Uncontrolled
None 		3 Approaches
6 Driveways
57.3345 		Other (At-Grade)
Single-Lane 		No traffic signs nor pavement markings present. ICD estimated from Google Maps linework.
Princeton, NJ
Mercer Co.
United States 		Alexander St. / University Pl.
(40.34305, -74.66085) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
30.0398 		Other (At-Grade)
Single-Lane 		2014 Bike sharrows and parking cutouts on one leg. ICD estimated from Google Maps linework.
Princeton, NJ
Mercer Co.
United States 		Elm Dr. / South Dr.
(40.34078, -74.65595) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
1 Driveways
29.1305 		Other (At-Grade)
Single-Lane 		2000 Year Completed estimated (1997-2002). ICD estimated from Google Maps linework.
Cambridge, MA
Middlesex Co.
United States 		Concord Ave (US 3) / Alewife Brook Parkway (Rte 2)
(42.38844, -71.14346) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
56.4557 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		Pavement markings installed in 2017. No crosswalks. ICD estimated from Google Maps linework.
Allwood, NJ
Passaic Co.
United States 		Allwood Rd. / Bloomfield Ave.
(40.84302, -74.15957) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
46.0792 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2004 Converted from non-circular rotary. ICD estimated from Google Maps linework.
Cambridge, MA
Middlesex Co.
United States 		Concord Ave / New St / Fresh Pond Pkwy (US 3, Rte 2)
(42.38670, -71.14100) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
38.8144 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		Pavement markings for bike conflict areas added in approx. 2018 (on New St exit). ICD estimated from Google Maps linework.
Brighton, MA
Suffolk Co.
United States 		Beacon St / Soldiers Field Parkway / Parsons St / US 20
(42.35821, -71.16022) 		Rotary
Existing 		Other
None 		5 Approaches
0 Driveways
147.3851 		Other (At-Grade)
Multilane (3+ Lane) 		Lane redesign in approx. 2013 Pavement markings redone in approx. 2010. Control Type: mix of Signal, stop and yield signs. All approaches have their own treatment. ICD estimated from Google Maps linework.
Cambridge, MA
Middlesex Co.
United States 		Memorial Dr (Rte 3) / Brookline St / BU Bridge (Rte 2)
(42.35424, -71.11081) 		Rotary
Existing 		Other
None 		4 Approaches
0 Driveways
84.7297 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		Control Types: Signals on BU Bridge approach and exit, other approaches yield sign. ICD estimated from Google Maps linework.
Boston, MA
Suffolk Co.
United States 		Northern Ave / Massport Haul Rd / Fid Kennedy Rd
(42.34767, -71.03621) 		Traffic Calming Circle
Existing 		Other
None 		4 Approaches
1 Driveways
24.7154 		Other (At-Grade)
Single-Lane 		New pavement markings (roundabout like) on approaches in June 2017. Control Type: 2 yield (Northern Ave), 1 stop Massport Haul Rd and 1 uncontrolled (stop sign is missing?) (Fid Kennedy Ave). ICD estimated from Google Maps linework.
Boston, MA
Suffolk Co.
United States 		William J Day Blvd / Broadway
(42.33584, -71.02402) 		Rotary
Existing 		Uncontrolled
None 		3 Approaches
0 Driveways
19.4229 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		No pavement markings on circular roadway. On street parking on circular roadway. ICD estimated from Google Maps linework.
Boston, MA
Suffolk Co.
United States 		Dominic J Bianculli Blvd / University Dr
(42.31403, -71.04246) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
1 Driveways
37.0930 		Other (At-Grade)
Single-Lane 		2018 This rotary seems to have been demolished in 2016 and converted to a roundabout in 2018. ICD estimated from Google Maps linework.
Brookline, MA
Norfolk Co.
United States 		Chestnut St / Pond Ave
(42.32283, -71.11966) 		Rotary
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
36.2047 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Brookline, MA
Norfolk Co.
United States 		Lee St / Warren St / Dudley St
(42.32272, -71.13750) 		Rotary
Existing 		Other
None 		3 Approaches
0 Driveways
52.9826 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		ICD estimated from Google Maps linework.
Boston, MA
Suffolk Co.
United States 		Morrissey Blvd. / Neponset Ave. (Rte 3A) / Redfield St. / Gallivan Blvd. (Rte 203) / Walnut St.
(42.28656, -71.04280) 		Signalized Roundabout/Circle
Existing 		Signal
None 		6 Approaches
3 Driveways
499.9997 		Freeway Ramps (Grade-Separated)
Multilane (3+ Lane) 		ICD = 500 ft x 325 ft.
Watertown, SD
Codington Co.
United States 		US 81 (5th St.) / 20th Ave. SE
(44.87638, -97.10890) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane 		2018 First roundabout by South Dakota Department of Transportation.
Sioux Falls, SD
Lincoln Co.
United States 		Louise Ave. / 271st St.
(43.46078, -96.76732) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
44.2118 		Other (At-Grade)
Single-Lane 		2018 ICD estimated from Google Maps linework.
Dedham, MA
Norfolk Co.
United States 		Washington St / Boston Providence Hwy
(42.25003, -71.17133) 		Rotary
Existing 		Signal
None 		4 Approaches
5 Driveways
67.1888 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		Boston Providence Hwy extends straight through the rotary ICD estimated from Google Maps linework.
Quincy, MA
Norfolk Co.
United States 		Palmer St / Yardarm Ln / Bicknell St
(42.25300, -70.96574) 		Rotary
Existing 		Uncontrolled
None 		4 Approaches
2 Driveways
70.7217 		Other (At-Grade)
Single-Lane 		Neighborhood area ICD estimated from Google Maps linework.
Springfield, OR
Lane Co.
United States 		Franklin Blvd. / (parking lots)
(44.04434, -123.03145) 		Roundabout
Existing 		All-Way Yield
None 		2 Approaches
2 Driveways
47.2167 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2018 ICD estimated from Google Maps linework.
Forest Park, MO
St. Louis City Co.
United States 		Hampton Ave. / Concourse Dr. / Wells Dr.
(38.63316, -90.28546) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
31.7207 		Other (At-Grade)
Single-Lane 		2009 Right-turn bypass lane merge in crosswalk area. ICD estimated from Google Maps linework.
Forest Park, MO
St. Louis City Co.
United States 		Concourse Dr. / Washington Dr.
(38.63495, -90.28480) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
23.3234 		Other (At-Grade)
Single-Lane 		2009 ICD estimated from Google Maps linework.
Forest Park, MO
St. Louis City Co.
United States 		Government Dr. / Wells Dr.
(38.63437, -90.30113) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
44.7814 		Other (At-Grade)
Single-Lane 		2016 ICD estimated from Google Maps linework.