|
City,
State County Country |
Intersection (Lat, Lng) |
Type Status |
Control Type / Other Control Type | Approaches / Driveways / ICD (m) |
Functional Class / LaneType |
Year Completed | Comments |
|---|---|---|---|---|---|---|---|
|
Vail,
CO Eagle United States |
S Frontage Rd. W / (parking) (39.64450, -106.38174) |
Roundabout Existing |
All-Way Yield Rectangular Rapid Flashing Beacon (RRFB) |
2 Approaches 1 Driveways 45.7200 |
Other (At-Grade) Multilane (2 Lane, 2x1 max) |
2021 | |
|
Sarasota,
FL Sarasota United States |
Palmer Blvd. / Apex Rd. (27.32581, -82.44348) |
Roundabout Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Multilane (2 Lane, 2x1 max) |
2026 | https://www.facebook.com/SRQCountyGov/posts/exciting-news-the-newly-completed-roundabout-at-apex-road-and-palmer-blvd-is-now/1319708003524990/ |
|
Ave Maria,
FL Collier United States |
Ave Maria Blvd. / Milano St. / Massa Way (26.33069, -81.43904) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 39.6240 |
Other (At-Grade) Single-Lane |
2007 | Year Completed estimated (2006-2007). Truck apron added 2017-2021. |
|
Linden,
CA San Joaquin United States |
E Comstack Rd. / N Duncan Rd. (38.04484, -121.09613) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 42.6720 |
Other (At-Grade) Single-Lane |
2024 | Rural with high-speed approaches. |
|
Woodbridge,
CA San Joaquin United States |
Chestnut St. / E Woodbridge Rd. / Mokelumne St. (38.15576, -121.30644) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 22.8600 |
Other (At-Grade) Single-Lane |
2003 | Pedestrian crossing on north leg at driveway. |
|
Boiling Springs,
SC Spartanburg United States |
Belcher Rd. / Old John Dodd Rd. / River Forest Dr. (35.01291, -82.01292) |
Roundabout Existing |
All-Way Yield None |
5 Approaches 0 Driveways 39.6240 |
Other (At-Grade) Single-Lane |
2025 | https://www.facebook.com/SpartanburgCountyGovernment/posts/safety-spotlight-spartanburg-county-is-committed-to-reducing-fatal-and-serious-i/1297816875727171/. |
|
Atlanta,
GA Fulton United States |
Wieuca Rd. NE / Phipps Blvd. NE / Park Ave. NE (33.85570, -84.36110) |
Roundabout Existing |
All-Way Yield Rectangular Rapid Flashing Beacon (RRFB) |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Multilane (2 Lane, 2x2 max) |
2026 | www.buckheadcid.com/projects/wieuca-road-phipps-boulevard-roundabout/. |
|
Richland,
WA Benton United States |
Swift Blvd. / Wright Ave. (46.27898, -119.29767) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 19.8120 |
Other (At-Grade) Single-lane w/ Traversable Central Island |
2025 | |
|
Dock Junction,
GA Glynn United States |
Glynco Pkwy. / Harry Driggers Blvd. / Canal Rd. (31.24593, -81.48790) |
Roundabout Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Multilane (2 Lane, 2x1 max) |
2025 | https://www.glynncounty.org/news/traffic-shift-begins-friday-september-19-canal-road-roundabout. |
|
Canton,
GA Cherokee United States |
Technology Ridge Pkwy. / Fate Connector Rd. / Heard Rd. (34.28908, -84.45418) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
2024 | |
|
Canton,
GA Cherokee United States |
Bluffs Pkwy. / Technology Ridge Pkwy. (34.28916, -84.46303) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 39.6240 |
Other (At-Grade) Single-Lane |
2024 | |
|
St George,
UT Washington United States |
W Canyon Tree Dr. / W Firepit Knoll Dr. (37.19211, -113.61059) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 36.5760 |
Other (At-Grade) Single-Lane |
2022 | Year Completed estimated (2021-2023). |
|
St George,
UT Washington United States |
S Ledges Pkwy. / W Conder Bluffs Pkwy. / N Movie Rock Dr. (37.18983, -113.61887) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 36.5760 |
Other (At-Grade) Single-Lane |
2019 | South leg stubbed. Year Completed estimated (2017-2020). |
|
St George,
UT Washington United States |
W Canyon Tree Dr. / N Arcadian Shores Dr. (37.19441, -113.61980) |
Other Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
No splitter islands. | |
|
St George,
UT Washington United States |
S Hidden Valley Dr. / S Hidden Valley Dr. (west) (37.05409, -113.56883) |
Other Existing |
All-Way Yield Unknown |
3 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
No splitter islands on two legs. | |
|
St George,
UT Washington United States |
S Hidden Valley Dr. / S Hidden Valley Dr. (east) (37.05369, -113.56714) |
Other Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
No splitter islands on two legs. | |
|
Versailles,
MO Morgan United States |
MO 5 / MO 52 (W Newton St.) / W Newton St. (38.43175, -92.85144) |
Roundabout Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
2026 | https://www.modot.org/node/78271. Year Completed estimated (2025-2026). |
|
Ka'u,
HI Hawaii United States |
Crater Rim Dr. / (park entrance) (19.42857, -155.25542) |
Roundabout Existing |
All-Way Yield Unknown |
3 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
2025 | Intersection shifted approximately 230 ft to the west. https://www.instagram.com/reel/DMYfSCiBK5k/. |
|
Charlotte,
NC Mecklenburg United States |
IBM Dr. / University Pointe Blvd. (35.30251, -80.76690) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 36.5760 |
Other (At-Grade) Single-Lane |
2017 | Year Completed estimated (2016-2018). |
|
Fairview,
NC Union United States |
SR 218 / Sikes Mill Rd. (35.13054, -80.47905) |
Roundabout Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 39.6240 |
Other (At-Grade) Single-Lane |
2024 | https://www.facebook.com/UnionCountyNC/posts/-attn-fairviewunionville-residents-good-news-weve-received-word-from-the-north-c/907177064786783/. |
|
Stallings,
NC Union United States |
Stallings Rd. / Healing Way / (parking) (35.09629, -80.67776) |
Roundabout Existing |
All-Way Yield Rectangular Rapid Flashing Beacon (RRFB) |
4 Approaches 0 Driveways 57.9120 |
Other (At-Grade) Multilane (2 Lane, 2x1 max) |
2022 | |
|
Charlotte,
NC Mecklenburg United States |
Bryant Farms Rd. / Elm Ln. / Blakeney Heath Rd. (35.04725, -80.81579) |
Roundabout Existing |
All-Way Yield Rectangular Rapid Flashing Beacon (RRFB) |
4 Approaches 0 Driveways 48.7680 |
Other (At-Grade) Multilane (2 Lane, 2x1 max) |
2025 | Left-turn-only lane on west leg. Right-turn-only lane on north leg. https://www.charlottenc.gov/Growth-and-Development/Projects/Bryant-Farms. |
|
Indian Land,
SC Lancaster United States |
Parkway Dr. / Prayer Center Dr. / Crossridge Blvd. (34.96245, -80.85236) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 42.6720 |
Other (At-Grade) Multilane (2 Lane, 2x1 max) |
2022 | |
|
Durham,
NC Durham United States |
Fendol Farm Pkwy. / Bowhall Dr. / Atlas Dr. (35.94810, -78.78555) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 39.6240 |
Other (At-Grade) Single-Lane |
2023 | Curbing completed 2021. Markings added 2023-2024. |
|
Walker,
MI Kent United States |
Center Dr. NW / Weatherford Dr. NW (43.02096, -85.68611) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 41.1480 |
Other (At-Grade) Single-Lane |
2024 | https://www.wzzm13.com/article/traffic/new-roundabout-opens-walker/69-f660176a-6a57-4a45-8ac5-7dea143a9bdb. |
|
Grand Rapids,
MI Kent United States |
Hastings St. NE / Sinclair Ave. NE (42.97219, -85.65833) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 24.3840 |
Other (At-Grade) Single-Lane |
2021 | Compact roundabout; east leg is inbound traffic only. Year Completed estimated (2020-2021). |
|
Toledo,
OH Lucas United States |
N Summit St. / Shoreland Ave. (41.72660, -83.47957) |
Roundabout Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 38.1000 |
Other (At-Grade) Single-Lane |
2025 | https://www.facebook.com/lucascountyengineer/videos/the-wait-is-over-summit-st-and-shoreland-ave-roundabout-is-now-open/785629650585355/. |
|
(unincorporated),
NC Beaufort United States |
US 264 / SR 32 (35.52855, -76.94924) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 45.7200 |
Other (At-Grade) Single-Lane |
2024 | Right-turn-only lane on west and east US 264 legs. Add-lane right-turn bypass lane on northeast SR 32 leg. |
|
Rocky Face,
GA Whitfield United States |
Mount Vernon Rd. / Houston Valley Rd. (34.80479, -85.05486) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
2025 | https://www.facebook.com/WhitfieldCountyGA/posts/mt-vernonhouston-valley-roundabout-is-now-openhere-are-a-few-quick-reminders-for/1187183273234601/. |
|
Oxford,
NC Granville United States |
Williamsboro St / Gilliam St / New College St (36.31248, -78.58715) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 33.5280 |
Other (At-Grade) Single-Lane |
2024 | Elliptical shaped. ICD = 110 ft x 90 ft. Painted splitter islands on north and south legs. |
|
Bellingham,
WA Whatcom United States |
E Bakerview Rd. / James St. (48.78944, -122.46415) |
Roundabout Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 36.5760 |
Other (At-Grade) Single-Lane |
2025 | External truck aprons on west and east entries. https://cob.org/project/james-bakerview-intersection-es-473. |
|
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. | |
|
Revere,
MA Suffolk Co. United States |
Copeland Circle [Rte 60 (Squire Rd.) / US 1 Ramps] (42.43008, -71.01710) |
Rotary Existing |
Unknown Unknown |
4 Approaches 0 Driveways 381.0000 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max) |
Retrofitted (November 2018) with multi-lane approaches/departures on the Route 1 ramps and roundabout style pavement markings and signs within the circulating roadway. ICD = 1250 ft x 880 ft. 21442 |