|
City,
State County Country |
Intersection (Lat, Lng) |
Type Status |
Control Type / Other Control Type | Approaches / Driveways / ICD (m) |
Functional Class / LaneType |
Year Completed | Comments |
|---|---|---|---|---|---|---|---|
|
St George,
UT Washington Co. United States |
Estrella Townhomes Manor / (unknown) (37.13926, -113.62184) |
Other Existing |
Unknown Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
||
|
St George,
UT Washington Co. United States |
Cohonina Cir. / N Cohonina Trl. / W Supai Trl. (37.14773, -113.63518) |
Other Existing |
Unknown Unknown |
3 Approaches 1 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
No splitter islands. | |
|
St George,
UT Washington Co. United States |
W Entrada Trl. / W Entrada Trl. (37.15539, -113.63050) |
Other Existing |
Unknown Unknown |
3 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
No splitter islands. | |
|
St George,
UT Washington Co. United States |
W Entrada Trl. / Private St. (37.15396, -113.63095) |
Other Existing |
Unknown Unknown |
3 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
No splitter islands. | |
|
St George,
UT Washington Co. United States |
Entrada Trl. / W Entrada Trl. (37.15818, -113.63335) |
Other Existing |
Unknown Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
No splitter islands. | |
|
St George,
UT Washington Co. United States |
(unknown) / (unknown) (37.15784, -113.63522) |
Other Existing |
Unknown Unknown |
3 Approaches 3 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
No splitter islands. | |
|
St George,
UT Washington Co. United States |
(unknown) / (unknown) (37.16004, -113.63406) |
Other Existing |
Unknown Unknown |
3 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
No splitter islands. | |
|
St George,
UT Washington Co. United States |
(unknown) / (unknown) (37.15987, -113.63701) |
Other Existing |
Unknown Unknown |
3 Approaches 3 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
No splitter islands. | |
|
St George,
UT Washington Co. United States |
(unknown) / (unknown) (37.16154, -113.63937) |
Other Existing |
Unknown Unknown |
3 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
No splitter islands. | |
|
St George,
UT Washington Co. United States |
(unknown) / (unknown) (37.16473, -113.63751) |
Other Existing |
Unknown Unknown |
3 Approaches 1 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
No splitter islands. | |
|
Ivins,
UT Washington Co. United States |
Split Rock (37.16784, -113.64507) |
Other Existing |
Unknown Unknown |
2 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
No splitter islands. | |
|
St George,
UT Washington Co. United States |
N Chaco Trl. / N Tacheene Dr. / W Shoshoni Trl. (37.14431, -113.63965) |
Other Existing |
Unknown Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
No splitter islands. | |
|
Newport,
ME Penobscot Co. United States |
US 2 (Main St.) / Rte 7-Rte 11 (44.83714, -69.28532) |
Roundabout Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
2025 | https://www.facebook.com/groups/1007998751203841/posts/1161104562559925/ |
|
Gateway,
FL Lee Co. United States |
Gateway Blvd. / Griffin Dr. / Fairway Lakes Dr. (26.57180, -81.74895) |
Roundabout Existing |
All-Way Yield Rectangular Rapid Flashing Beacon (RRFB) |
4 Approaches 0 Driveways 45.7200 |
Other (At-Grade) Multilane (2 Lane, 2x1 max) |
2024 | RRFBs on all legs; fountain in the central island. https://www.gulfcoastnewsnow.com/article/roundabout-fountain-set-to-transform-busy-intersection-in-gateway/60205605. |
|
North Bennington,
VT Bennington United States |
Rte 67A (N Bennington Rd.) / Rice Ln. / Silk Rd. / College Dr. (42.91223, -73.22549) |
Roundabout Existing |
All-Way Yield Unknown |
5 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
2025 | Peanut shaped. Open to traffic in late 2025, but will not be complete, including final paving, until some time in 2026. https://www.benningtonbanner.com/local-news/peanut-roundabout-is-opened-to-through-traffic/article_9f500794-9f23-4d4a-916d-a2af76cfb017.html. |
|
Glencoe,
MN McLeod United States |
US 212 / Morningside Ave. N / Morningside Dr. (44.76818, -94.13150) |
Roundabout Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
2024 | https://www.facebook.com/groups/MnDOTsouthwest/posts/1738386539899997/. |
|
Weyburn,
SK Division 2 Canada |
Hwy 39 (CanAm Hwy.) / Hwy 13 (Red Coat Trl.) (49.66802, -103.89014) |
Roundabout Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways |
Other (At-Grade) Multilane (2 Lane, 2x1 max) |
2025 | https://www.facebook.com/SaskatchewanHighwayHotline/posts/if-youre-travelling-in-the-weyburn-area-a-new-roundabout-is-open-on-highway-39re/1274472384722233/ |
|
Penhold,
AB Division 8 Canada |
Hwy 2A / Hwy 42 / Hwy 592 (52.14310, -113.87217) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 60.0000 |
Other (At-Grade) Multilane (2 Lane, 2x2 max) |
2024 | https://www.rdcounty.ca/DocumentCenter/View/8361/Highway-2A-Roundabout-Construction-Info-Sheet?bidId=. |
|
Cochrane,
AB Division 6 Canada |
Glenpatrick Dr. / Glenhill Dr. (51.18947, -114.48341) |
Roundabout Existing |
All-Way Yield Unknown |
3 Approaches 0 Driveways |
Other (At-Grade) Single-Lane |
2025 | https://cochranenow.com/articles/key-glenpatrick-road-work-finished-just-in-time. |
|
Lebanon,
KY Marion United States |
KY 2154 (Veterans Memorial Hwy.) / KY 49 (N Loretto Rd.) (37.57203, -85.27529) |
Roundabout Unknown |
All-Way Yield Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Unknown |
https://www.facebook.com/KYTCDistrict4/posts/work-is-beginning-on-a-contract-to-rebuild-two-intersections-along-ky-2154-veter/1152000073640997/ | |
|
San Antonio,
TX Bexar United States |
Sol Trace / Albedo Blvd. (29.35737, -98.63856) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 24.3840 |
Other (At-Grade) Single-Lane |
2019 | https://www.youtube.com/watch?v=88xOs8OjROQ. |
|
Hayden,
ID Kootenai United States |
W Lancaster Rd. / N Ramsey Rd. (47.78803, -116.80123) |
Roundabout Existing |
All-Way Yield Unknown |
3 Approaches 0 Driveways 36.5760 |
Other (At-Grade) Single-Lane |
2025 | |
|
Modesto,
CA Stanislaus United States |
Paradise Rd. / Chicago Ave. / Ellen Ave. (37.62588, -121.01478) |
Roundabout Existing |
All-Way Yield Rectangular Rapid Flashing Beacon (RRFB) |
4 Approaches 0 Driveways 35.0520 |
Other (At-Grade) Single-Lane |
2025 | Elliptical shaped. ICD = 115 ft x 110 ft. |
|
Modesto,
CA Stanislaus United States |
Washington St. / I St. / Vine St. (37.63338, -121.00739) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 2 Driveways 31.3944 |
Other (At-Grade) Single-Lane |
2025 | Painted splitter island on west leg. |
|
Modesto,
CA Stanislaus United States |
La Loma Ave. / Buena Vista Dr. (37.64353, -120.98263) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 28.0413 |
Other (At-Grade) Single-Lane |
2021 | |
|
Modesto,
CA Stanislaus United States |
La Loma Ave. / Haddon Ave. / N Santa Ana Ave. (37.64128, -120.97656) |
Roundabout Existing |
All-Way Yield None |
5 Approaches 0 Driveways 27.4320 |
Other (At-Grade) Single-Lane |
2021 | Haddon Ave. is one-way westbound entering the roundabout. Painted splitter island on south leg. |
|
Modesto,
CA Stanislaus United States |
Blue Bird Dr. / Vintage Dr. (37.69237, -121.05863) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 23.4693 |
Other (At-Grade) Single-Lane |
2019 | |
|
Modesto,
CA Stanislaus United States |
Vintage Dr. / Landmark Cir. (37.69282, -121.05360) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 22.2501 |
Other (At-Grade) Single-Lane |
2019 | |
|
Glassboro,
NJ Gloucester United States |
Empire Way E / Crispin Way (39.68779, -75.15012) |
Other Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 30.4800 |
Other (At-Grade) Single-Lane |
2016 | Painted splitter islands on east and south legs. |
|
Chesterfield,
NJ Burlington United States |
Saddle Way / Thorn Ln. / (parking) (40.13722, -74.65769) |
Other Existing |
All-Way Stop Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
||
|
Chesterfield,
NJ Burlington United States |
Recklesstown Way / Harness Way (40.14048, -74.65337) |
Other Existing |
All-Way Stop Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
||
|
Kanab,
UT Kane United States |
W Ladera Ln. / El Valle Dr. / W Los Barancos Ln. / E 300 N (37.05332, -112.51992) |
Other Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 36.5760 |
Other (At-Grade) Single-Lane |
2005 | No pedestrian crossings although sidewalks present. Year Completed estimated (2004-2006). |
|
Vail,
CO Eagle Co. United States |
Chamonix Rd. / I-70 WB Ramps / North Frontage Rd. (39.62828, -106.42120) |
Roundabout Existing |
All-Way Yield None |
5 Approaches 0 Driveways 45.7200 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max) |
1997 | |
|
Vail,
CO Eagle Co. United States |
Chamonix Rd. / I-70 EB Ramps / South Frontage Rd. (39.62753, -106.42020) |
Roundabout Existing |
All-Way Yield None |
5 Approaches 0 Driveways 45.7200 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max) |
1997 | |
|
Avon,
CO Eagle Co. United States |
Avon Rd. / I-70 WB Ramps (39.63782, -106.52080) |
Roundabout Existing |
All-Way Yield Active Pedestrian Warning (flashing yellow) |
3 Approaches 0 Driveways 42.6720 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max) |
1997 | Highway ref. pt. 70-166.62. Raindrop shaped. |
|
Avon,
CO Eagle Co. United States |
Avon Rd. / I-70 EB Ramps (39.63683, -106.52170) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 44.1960 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max) |
1997 | Highway ref. pt. 70-166.62. Raindrop shaped. |
|
De Pere,
WI Brown Co. United States |
Scheuring Rd. (CTH F) / US 41 NB Ramps (44.43074, -88.10989) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 53.3400 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max) |
2011 | Series of 6 roundabouts. Yield-controlled right-turn bypass lane on south leg; merging right-turn bypass lane on east leg. Opened September 2011. Circular central island. |
|
Ritchie,
MD Prince Georges Co. United States |
Ritchie-Marlboro Rd. / I-95 SB Ramps (38.86894, -76.84738) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 770.9968 |
Freeway Ramps (Grade-Separated) Multilane (3+ Lane) |
2001 | Opening initially with two lanes. Expanded from two lanes to three lanes in 2010. 21442 |
|
Ritchie,
MD Prince Georges Co. United States |
Ritchie-Marlboro Rd. / I-95 NB Ramps (38.86824, -76.84158) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 67.0560 |
Freeway Ramps (Grade-Separated) Multilane (3+ Lane) |
2001 | Opened initially with two lanes. Expanded from two lanes to three lanes in 2010. 21442 |
|
De Pere,
WI Brown Co. United States |
Scheuring Rd. (CTH F) / US 41 SB Ramps (44.43050, -88.11402) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 56.3880 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max) |
2011 | Series of 6 roundabouts. Opened September 2011. |
|
Ellicott City,
MD Howard Co. United States |
MD 103 / MD 100 WB Ramps (39.20846, -76.78294) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 33.3154 |
Freeway Ramps (Grade-Separated) Single-Lane |
1998 | Opened November 1998. ICD estimated from Google Maps linework. |
|
Ellicott City,
MD Howard Co. United States |
MD 103 / MD 100 EB Ramps (39.20733, -76.78243) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 30.5396 |
Freeway Ramps (Grade-Separated) Single-Lane |
1998 | Opened November 1998. ICD estimated from Google Maps linework. |
|
Ellicott City,
MD Howard Co. United States |
Snowden River Pkwy. / MD 100 WB Ramps (39.21233, -76.79544) |
Roundabout Existing |
All-Way Yield Metering Signal |
3 Approaches 0 Driveways 25.9105 |
Freeway Ramps (Grade-Separated) Single-Lane |
1998 | Opened November 1998. Metering signal on Snowden River Pkwy approach. ICD estimated from Google Maps linework. |
|
Ellicott City,
MD Howard Co. United States |
MD 104 (Waterloo Rd.) / MD 100 WB Ramps (39.22470, -76.80600) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 45.7200 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max) |
1999 | |
|
Topeka,
KS Shawnee Co. United States |
Rice Rd. / I-70 WB Ramps / Sycamore Dr. (39.03610, -95.62310) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 44.5293 |
Freeway Ramps (Grade-Separated) Single-Lane |
2000 | Part of a major realignment of I-70 and K-4. Sycamore Drive is one way with two westbound lanes (into the roundabout). Partial cloverleaf AB interchange type. Completed October 2000. ICD estimated from Google Maps linework. |
|
Topeka,
KS Shawnee Co. United States |
Rice Rd. / I-70 EB Ramps / Cyprus Drive (39.03190, -95.62320) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 52.8817 |
Freeway Ramps (Grade-Separated) Single-Lane |
2000 | Part of a major realignment of I-70 and K-4. Cyprus Drive is One Way Eastbound (away from the roundabout). Partial cloverleaf AB interchange type. Completed October 2000. ICD estimated from Google Maps linework. |
|
Green Bay,
WI Brown Co. United States |
W. Mason St. (STH 32-STH 54) / US 41 SB Ramps (44.52418, -88.08284) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 45.9811 |
Freeway Ramps (Grade-Separated) Multilane (3+ Lane) |
2012 | Series of 3 roundabouts. Opened August 31, 2012. ICD estimated from Google Maps linework. |
|
Green Bay,
WI Brown Co. United States |
W. Mason St. (STH 32-STH 54) / US 41 NB Ramps (44.52415, -88.08103) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 43.4266 |
Freeway Ramps (Grade-Separated) Multilane (3+ Lane) |
2012 | Series of 3 roundabouts. Opened August 31, 2012. ICD estimated from Google Maps linework. |
|
Arcata,
CA Humboldt Co. United States |
Guintoli Ln. / US 101 SB Ramps (40.90400, -124.08920) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 39.7180 |
Freeway Ramps (Grade-Separated) Single-Lane |
2005 | ICD estimated from Google Maps linework. |
|
Arcata,
CA Humboldt Co. United States |
Guintoli Ln. / US 101 NB Ramps (40.90492, -124.08510) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 34.3015 |
Freeway Ramps (Grade-Separated) Single-Lane |
2005 | ICD estimated from Google Maps linework. |
|
Kingston,
NY Ulster Co. United States |
I-587 / Rte 28 / I-87 Ramps / Washington Ave. (41.94362, -74.02840) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 60.9600 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max) |
2000 | A 600 ft diameter traffic circle was replaced by 200 ft diameter roundabout. At Exit 19 from I-87. I-587 terminates in roundabout. |
|
Anchorage,
AK Anchorage United States |
C St. / O'Malley EB Ramps (61.12273, -149.88630) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 53.3400 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max) |
2006 | |
|
Newton,
KS Harvey Co. United States |
Broadway St. / I-135 Ramps (38.05000, -97.32250) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 45.1441 |
Freeway Ramps (Grade-Separated) Single-Lane |
2003 | Single-point interchange. Near roundabout interchange at I-135/1st Street. Roundabout completed January 2002, ramps from I-135 to the roundabout reopened March 2002. Eliptical structure incorporating both NB and SB ramps. Previously controlled by one-way stop ICD estimated from Google Maps linework. |
|
Topeka,
KS Shawnee Co. United States |
46th St. / US 75 Ramps (39.12934, -95.71959) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 124.9680 |
Freeway Ramps (Grade-Separated) Single-Lane |
2002 | Roundabout under structure as part of single-point interchange. Elliptical shaped. ICD = 410 ft x 270 ft. Original intersection was at grade. Completed November 2002. |
|
Anchorage,
AK Anchorage United States |
Dowling Rd. / New Seward Hwy SB Ramps (61.16636, -149.85780) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 65.5320 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max) |
2004 | Roundabout revised in 2022-2023. |
|
Anchorage,
AK Anchorage United States |
Dowling Rd. / New Seward Hwy NB Ramps (61.16637, -149.85520) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 57.9120 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max) |
2004 | Spiral striping. Roundabout revised 2022-2023. |
|
Lewisville,
NC Forsyth Co. United States |
Concord Church Rd. / US 421 SB Ramp / Williams Rd. (36.08978, -80.43072) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 29.9191 |
Freeway Ramps (Grade-Separated) Single-Lane |
2000 | Solved capacity problem. Previously controlled by one-way stop ICD estimated from Google Maps linework. |
|
St. George,
UT Washington Co. United States |
E. Brigham Rd. / I-15 NB Ramps (37.05939, -113.58350) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 42.8889 |
Freeway Ramps (Grade-Separated) Single-Lane |
2006 | Raindrop-shaped interchange terminal. ICD estimated from Google Maps linework. |
|
Scaggsville,
MD Howard Co. United States |
MD 216 (Scaggsville Rd.) / US 29 SB Ramps (39.14562, -76.90418) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 70.1040 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max) |
2001 | Series of 4 roundabouts. |
|
Scaggsville,
MD Howard Co. United States |
MD 216 / US 29 NB Ramps / Ice Crystal Dr. (39.14476, -76.89799) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 70.1040 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max) |
2001 | Series of 4 roundabouts. |
|
Millington,
MD Kent Co. United States |
MD 291 / US 301 SB Ramps (39.26463, -75.86641) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 31.4393 |
Freeway Ramps (Grade-Separated) Single-Lane |
1999 | Opened August 1999. ICD estimated from Google Maps linework. |
|
Millington,
MD Kent Co. United States |
MD 291 / US 301 NB Ramps (39.26386, -75.86260) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 28.6656 |
Freeway Ramps (Grade-Separated) Single-Lane |
1999 | Opened August 1999. ICD estimated from Google Maps linework. |
|
Gig Harbor,
WA Pierce Co. United States |
Borgen Blvd. / SR 16 NB Ramps / Burnham Dr. (47.35843, -122.61260) |
Roundabout Existing |
All-Way Yield None |
6 Approaches 0 Driveways 47.7339 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2001 | Oval shaped central island. 6 legged configuration includes a on-ramp (outbound)leg. Central island is used as a roadway storm detention pond. Completed Summer/Fall 2001. Previously controlled by one-way stop ICD estimated from Google Maps linework. |
|
Richland,
WA Benton Co. United States |
Steptoe Dr. / SR 240 EB Ramps / Columbia Park Trl. (46.23893, -119.24546) |
Roundabout Existing |
All-Way Yield Metering Signal |
5 Approaches 0 Driveways 49.5635 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2007 | 5th leg is on-ramp to SR 240. Opened November 2007. Lane configuration reduced in 2016. Modified in 2018 to add metering signal. According to local news (link below) they started metering the traffic on the westbound Columbia Park Trail approach in 2018. It only turns on when traffic coming off the freeway gets backed up. https://97rockonline.com/tri-cities-roundabout-gets-new-metered-traffic-light-wait-what/ 21442 |
|
St. George,
UT Washington Co. United States |
E. Brigham Rd. / I-15 SB Ramps / Pioneer Rd. (37.05999, -113.58560) |
Roundabout Existing |
All-Way Yield None |
6 Approaches 0 Driveways 78.1526 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2006 | Combines interchange ramps and frontage road. ICD estimated from Google Maps linework. |
|
Advance,
NC Davie Co. United States |
NC 801 / I-40 EB Ramps (36.00655, -80.44083) |
Roundabout Removed |
All-Way Yield None |
3 Approaches 0 Driveways 17.3907 |
Freeway Ramps (Grade-Separated) Single-Lane |
2002 | Developer-built "temporary" intersection fix. Previously controlled by one-way stop ICD estimated from Google Maps linework. |
|
Phoenix,
AZ Maricopa Co. United States |
Happy Valley Rd. / I-17 NB Ramps (33.71291, -112.11477) |
Roundabout Removed |
All-Way Yield None |
4 Approaches 0 Driveways 64.0077 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2020 | Initially constructed 2002, revised 2005. Removed in 2020, replaced with diverging diamond interchange: https://www.youtube.com/watch?v=Xgcxmf9UYWw. https://azdot.gov/adot-blog/requiem-roundabouts-least-ones-happy-valley-road 21442 |
|
Phoenix,
AZ Maricopa Co. United States |
Happy Valley Rd. / I-17 SB Ramps (33.71292, -112.12019) |
Roundabout Removed |
All-Way Yield None |
3 Approaches 0 Driveways 62.4840 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2020 | Initially constructed 2002, revised 2005. Removed in 2020, replaced with diverging diamond interchange: https://www.youtube.com/watch?v=Xgcxmf9UYWw. https://azdot.gov/adot-blog/requiem-roundabouts-least-ones-happy-valley-road 21442 |
|
Frisco,
CO Summit Co. United States |
SH 9 / I-70 WB Ramps (39.59339, -106.09700) |
Roundabout Existing |
All-Way Yield None |
5 Approaches 0 Driveways 34.0524 |
Freeway Ramps (Grade-Separated) Single-Lane |
2000 | Highway ref. pt. 70-202.35. ICD estimated from Google Maps linework. |
|
Gig Harbor,
WA Pierce Co. United States |
Borgen Blvd. / SR 16 SB Ramps (47.35868, -122.61610) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 38.8342 |
Freeway Ramps (Grade-Separated) Single-Lane |
2004 | Opened March 2004. ICD estimated from Google Maps linework. |
|
Kaukauna,
WI Outagamie Co. United States |
CTH J / US 41 SB Ramps (44.30645, -88.24948) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 35.8965 |
Freeway Ramps (Grade-Separated) Single-Lane |
2010 | Opened October 11, 2010. ICD estimated from Google Maps linework. |
|
Columbia,
MO Boone Co. United States |
Business Loop 70 / I-70 WB Ramps / Creasy Springs Rd. (38.96655, -92.35241) |
Roundabout Removed |
All-Way Yield Unknown |
5 Approaches 0 Driveways 94.7178 |
Freeway Ramps (Grade-Separated) Single-Lane |
1996 | First roundabout in Missouri by Missouri DOT. Originally built in 1996 per article: https://www.voxmagazine.com/news/all-about-roundabouts-in-columbia/article_93724b2b-8b20-5228-b4de-315c5c3d2004.html. Replaced with roundabout to immediate west. ICD estimated from Google Maps linework. |
|
Carson City,
NV Carson City Co. United States |
Arrowhead Dr. / I-580 SB Ramp (39.19810, -119.77540) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 27.7669 |
Freeway Ramps (Grade-Separated) Single-Lane |
2002 | Future SB on-ramp for Carson City Freeway (I-580). Overpass and roundabouts completed in 2002; freeway ramps completed ~2005. ICD estimated from Google Maps linework. |
|
Carson City,
NV Carson City Co. United States |
Arrowhead Dr. / I-580 NB Ramps / Imus Rd. (39.19840, -119.77380) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 28.6923 |
Freeway Ramps (Grade-Separated) Single-Lane |
2002 | NB off-ramp for Carson City Freeway (I-580) and extension of Imus Road. Overpass and roundabouts completed in 2002. ICD estimated from Google Maps linework. |
|
Sterling Heights,
MI Macomb Co. United States |
Van Dyke Ave. (M-53) / 18 1/2 Mile Rd. (42.60148, -83.03119) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 76.2000 |
Freeway Ramps (Grade-Separated) Multilane (3+ Lane) |
2005 | Completed June 2005. |
|
Kaukauna,
WI Outagamie Co. United States |
CTH J / US 41 NB Ramps (44.30463, -88.24939) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 37.6070 |
Freeway Ramps (Grade-Separated) Single-Lane |
2010 | Opened October 11, 2010. ICD estimated from Google Maps linework. |
|
Avon,
CO Eagle Co. United States |
William J Post Blvd. / I-70 WB Ramps (39.62759, -106.49460) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 38.6349 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2003 | ICD estimated from Google Maps linework. |
|
Avon,
CO Eagle Co. United States |
William J Post Blvd. / I-70 EB Ramps (39.62714, -106.49610) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 37.7153 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2003 | ICD estimated from Google Maps linework. |
|
Newton,
KS Harvey Co. United States |
First St. / I-135 Ramps (38.04250, -97.32240) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 65.8419 |
Freeway Ramps (Grade-Separated) Single-Lane |
2003 | Single-point interchange. Previously controlled by one-way stop ICD estimated from Google Maps linework. |
|
Hanover,
MD Anne Arundel Co. United States |
Arundel Mills Blvd. / MD 295 NB Ramps (39.15573, -76.74459) |
Roundabout Removed |
All-Way Yield None |
3 Approaches 0 Driveways 26.8575 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2002 | ICD estimated from Google Maps linework. Replaced with DDI |
|
Hanover,
MD Anne Arundel Co. United States |
Arundel Mills Blvd. / MD 295 SB Ramps (39.15677, -76.74617) |
Roundabout Removed |
All-Way Yield None |
2 Approaches 0 Driveways 66.6796 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2002 | ICD estimated from Google Maps linework. Replaced with DDI. |
|
Jessup,
MD Howard Co. United States |
Canine Rd. / MD 32 EB Ramps (39.10101, -76.76953) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 38.0005 |
Freeway Ramps (Grade-Separated) Single-Lane |
2001 | ICD estimated from Google Maps linework. |
|
Truckee,
CA Nevada Co. United States |
Hwy 89 / I-80 EB Ramps (39.32243, -120.20770) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 55.4354 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2005 | ICD estimated from Google Maps linework. |
|
Camp Verde,
AZ Yavapai Co. United States |
Middle Verde Rd. / I-17 NB Ramps (34.61039, -111.86160) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 34.4040 |
Freeway Ramps (Grade-Separated) Single-Lane |
2006 | ICD estimated from Google Maps linework. |
|
Truckee,
CA Nevada Co. United States |
Hwy 89 / I-80 WB Ramps (39.32386, -120.20760) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 40.6518 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2005 | ICD estimated from Google Maps linework. |
|
Acoma Indian Reservation,
NM McKinley Co. United States |
SH 30 / I-40 WB Ramps (35.07505, -107.56110) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 65.4884 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2010 | Merging right-turn bypass lane on north leg. Series of 3 roundabouts. ICD estimated from Google Maps linework. |
|
Brighton,
MI Livingston Co. United States |
Lee Rd. / US 23 NB Ramps / Fieldcrest Dr. (42.50486, -83.75652) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 47.5461 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2005 | ICD estimated from Google Maps linework. |
|
Brighton,
MI Livingston Co. United States |
Lee Rd. / US 23 SB Ramps (42.50605, -83.75954) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 37.8600 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2006 | Linked with Lee Rd/Whitmore Lake Rd roundabout. Previously controlled by one-way stop control ICD estimated from Google Maps linework. |
|
Buena Vista Township,
MI Saginaw Co. United States |
M-81 / I-75 SB Ramps (43.45060, -83.89209) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 34.6818 |
Freeway Ramps (Grade-Separated) Single-Lane |
2006 | Right turn bypass lanes ICD estimated from Google Maps linework. |
|
Buena Vista Township,
MI Saginaw Co. United States |
M-81 / I-75 NB Ramps (43.45056, -83.88958) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 34.6818 |
Freeway Ramps (Grade-Separated) Single-Lane |
2006 | Right turn bypass lanes ICD estimated from Google Maps linework. |
|
Chattanooga,
TN Hamilton Co. United States |
SR 153 NB Ramps / Lake Resort Dr. (35.10986, -85.22842) |
Roundabout Existing |
All-Way Yield Unknown |
3 Approaches 0 Driveways 55.6902 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2006 | At new intersection with new bridge and alignment of Lake Resort Drive. Former intersection was ~800 to the south. Non-symetric design. Some motions have two lanes. Previously controlled by signal ICD estimated from Google Maps linework. |
|
Chattanooga,
TN Hamilton Co. United States |
SR 153 SB Ramps / N. Access Rd. / TVA offices (35.10868, -85.23122) |
Roundabout Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 97.7036 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2006 | N Access Road is a 4 lane arterial road. Fatal crash April 4, 2010. 11861-05. ICD estimated from Google Maps linework. |
|
Jessup,
MD Anne Arundel Co. United States |
MD 198 (Laurel Fort Meade Rd.) / MD 32 EB Ramps (39.08997, -76.75736) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 53.3400 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2002 | Lanes reduced in 2010. 21442 |
|
Jessup,
MD Anne Arundel Co. United States |
MD 198 (Laurel Fort Meade Rd.) / MD 32 WB Ramps (39.09178, -76.75688) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 53.3400 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2002 | Lanes reduced in 2010. 21442 |
|
Acoma Indian Reservation,
NM McKinley Co. United States |
SH 30 / I-40 EB Ramps (35.07341, -107.56120) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 65.4897 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2010 | Merging right-turn bypass lane on west leg. Series of 3 roundabouts. ICD estimated from Google Maps linework. |
|
Glenwood Springs,
CO Garfield Co. United States |
Mel Ray Rd. / I-70 WB Ramps / US 6 (39.56142, -107.36127) |
Roundabout Existing |
All-Way Yield None |
5 Approaches 0 Driveways 44.1965 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2006 | ICD estimated from Google Maps linework. |
|
Glenwood Springs,
CO Garfield Co. United States |
Mel Ray Rd. / I-70 EB Ramps / Midland Ave. / Riverine Rd. (39.56019, -107.36139) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 46.9595 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2006 | 1 of 2 at Exit 114 on I-70, observed under construction in 2005. ICD estimated from Google Maps linework. |
|
Mesa,
AZ Maricopa Co. United States |
Brown Rd. / Loop 202 SB Ramps (33.43689, -111.65280) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 42.8563 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2007 | ICD estimated from Google Maps linework. |
|
Mesa,
AZ Maricopa Co. United States |
Brown Rd. / Loop 202 NB Ramps (33.43694, -111.64850) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 47.8396 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2007 | ICD estimated from Google Maps linework. |
|
Woburn,
MA Middlesex Co. United States |
I-95 Ramps / MA 38 (Main St.) (42.49945, -71.15711) |
Rotary Existing |
Unknown Unknown |
4 Approaches 0 Driveways 30.8196 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
ICD estimated from Google Maps linework. |