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Diverging Diamond Cache Valley, Salt Lake City area
Details    Edit
Updated: Jun 11, 2014
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Abstract: http://www.udot.utah.gov/1100southddi/
Region: USA - Mountain West Videos: No
Road: I-841100 South (US-91) Pics: No
City: Perry ,UT ,US Docs: No
Lat/Lon: 41.485729218 ,-112.053199768 Links: No
1 people have recorded their role in this project.
Credits

Markus Epple   
Role: Added or clarified information.

RM 1431 Diverging Diamond
Details    Edit
Updated: Jun 11, 2014
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Region: USA - South-Central Videos: No
Road: University BlvdUniversity Blvd Pics: No
City: Round Rock ,TX ,US Docs: No
Lat/Lon: 30.558137894 ,-97.692428589 Links: No
2 people have recorded their role in this project.
Credits

Markus Epple   
Role: Added or clarified information.
Jonathan Dough   
Role: Added or clarified information.

Elmhurst Rd DDI
Details    Edit
Updated: Mar 11, 2014
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Abstract: Since 1958, this has been a partial interchange, with tollway access only to and from points east. Project will add new ramps to provide full access and convert to DDI. Construction cost reflects bridge work necessitated by planned widening of tollway below.
Region: USA - North-Central Videos: No
Road: I-90S Elmhurst Rd Pics: No
City: Des Plaines ,IL ,US Docs: No
Lat/Lon: 42.018051147 ,-87.940689087 Links: No
1 people have recorded their role in this project.
Credits

Jonathan Dough   
Role: Added or clarified information.

DDI Under Design in Boone County Kentucky
Details    Edit
Updated: Jan 16, 2013
 Freeway Interchanges  Diverging Diamond Interchanges  Conceptual Planning
Abstract: The I-71/75 & KY 338 Richwood Road Interchange Project is part of a comprehensive plan by the Kentucky Transportation Cabinet (KYTC) and Boone County to improve transportation service in the rapidly growing I-71/I-75 corridor. The area surrounding the KY 338 (Richwood Road) interchange has experienced rapid development, leading to increased traffic on the local road network. Add to this the continued growth in traffic on I-75, one of the nation’s largest commercial routes, and you get traffic congestion and high accident rates. With this area expected to continue to grow over the next 20 years, so will the congestion and safety issues.
Region: USA - Southeast Videos: No
Road: I-71KY 338 Pics: No
City: Union ,KY ,US Docs: Yes
Lat/Lon: 38.917602539 ,-84.628936768 Links: Yes
1 people have recorded their role in this project.
Credits

Todd White, PE   
Role: Lead Roadway Engineer

Temporary Thru Turn for SPUI construction
Details    Edit
Updated: Nov 01, 2012
 Freeway Interchanges  Noteworthy Single Point Urban Interchange (SPUI)  TTI - Median U-Turn (Michigan U)  Existing
Abstract: Formerly, an at-grade intersection. The Thru-Turn strategy was used here to reroute lefts, making it cheaper to build the interchange, and with less disruption to traffic. Had good YouTube video, since removed.
Region: USA - Mountain West Videos: No
Road: UT-1547800 S Pics: No
City: West Jordan ,UT ,US Docs: No
Lat/Lon: 40.609916687 ,-111.976501465 Links: No
1 people have recorded their role in this project.
Credits


Flow metered roundabout
Details    Edit
Updated: Oct 03, 2011
 Freeway Interchanges  Roundabout Interchanges  Bowtie Interchanges  Existing
Region: Oceania Videos: No
Road: Hendry AveState Highway 20 Pics: No
City: Auckland ,NZ Docs: No
Lat/Lon: -36.921920776 ,174.766983032 Links: No
2 people have recorded their role in this project.
Credits

Daniel Dryland   
Role: Added or clarified information.
An Ho   
Role: Added or clarified information.

3rd Diverging Diamond in USA
Details    Edit
Updated: Nov 30, -0001
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Abstract: 3rd Diverging Diamond in USA. Opened Fall, 2010.
Region: USA - Mountain West Videos: Yes
Road: UT-145I-15 Pics: Yes
City: American Fork ,UT ,US Docs: Yes
Lat/Lon: 40.377025604 ,-111.818466187 Links: No
2 people have recorded their role in this project.
Credits


1st DDI opened to traffic in the US
Details    Edit
Updated: May 10, 2011
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Abstract: 1st DDI opened to traffic in the US
Region: USA - South-Central Videos: Yes
Road: I-44 Pics: Yes
City: Springfield ,MO ,US Docs: No
Lat/Lon: 37.250404358 ,-93.310737610 Links: No
2 people have recorded their role in this project.
Credits


Georgia's First Diverging Diamond Interchange
Details    Edit
Updated: Aug 09, 2011
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Abstract: This diverging diamond interchange, the first in Georgia, serves a diverse and vibrant commercial and residential area. The project is intended to reduce peak hour delays along the Ashford Dunwoody arterial by separating the left and right turning traffic flows at the interchange and eliminating the left turn phases at the signals. Construction began in September of 2011 and is projected to be complete by September of 2012. The "crossover" of the roadway will be in operation in the spring of 2012
Region: USA - Southeast Videos: No
Road: I-285Ashford Dunwoody Road Pics: Yes
City: Atlanta ,GA ,US Docs: No
Lat/Lon: 33.918060303 ,-84.338264465 Links: Yes
4 people have recorded their role in this project.
Credits

An Ho   
Role: Added or clarified information.
Markus Epple   
Role: Added or clarified information.

World's 1st (and only) Echelon Interchange
Details    Edit
Updated: Nov 30, -0001
 Freeway Interchanges  Eschelon Arterial Interchanges  Existing
Abstract: Bridge structure, but subjects all approaches to a signal (no "freeway" movements). Functions similar to Town Center Intersection (intersecting couplets), but does so vertically rather than laterally. Good choice when seeking to avoid freeway precedent, and both streets have similarly high volumes. Won an AASHTO award for innovative design somewhere around 2002.
Region: USA - Southeast Videos: No
Road: NE 203rd St Pics: No
City: Aventura ,FL ,US Docs: No
Lat/Lon: 25.963521957 ,-80.146858215 Links: No
1 people have recorded their role in this project.
Credits


2 of 3 Diverging Diamonds in France
Details    Edit
Updated: Nov 30, -0001
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Region: Europe Videos: No
Road: N486 Pics: No
City: Champigny-sur-Marne ,FR Docs: No
Lat/Lon: 48.830326080 ,2.493097305 Links: No
2 people have recorded their role in this project.
Credits

An Ho, PM   Dev.
Role: Added or clarified information.

Quad in Ontario w/bridge
Details    Edit
Updated: Nov 30, -0001
 Freeway Interchanges  Quadrant Interchanges  Jughandle  Existing
Abstract: Single quadrant used in combination with overpass.
Region: USA - Northeast Videos: No
Road: Regional Rd 17 Pics: No
City: Mississauga ,ON ,CA Docs: No
Lat/Lon: 43.594661713 ,-79.600769043 Links: No
1 people have recorded their role in this project.
Credits


Likely First DDI in NY State
Details    Edit
Updated: May 22, 2011
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Abstract: Diverging Diamond Interchanges
Region: USA - Northeast Videos: No
Road: I-590Winton Road Pics: No
City: Rochester ,NY ,US Docs: No
Lat/Lon: 43.107509613 ,-77.575599670 Links: No
2 people have recorded their role in this project.
Credits

An Ho   
Role: Added or clarified information.

Diverging Diamond in the Salt Lake City area
Details    Edit
Updated: May 18, 2011
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Region: USA - Mountain West Videos: No
Road: 2100 S FwyBangerter Highway Pics: No
City: Salt Lake City ,UT ,US Docs: No
Lat/Lon: 40.725849152 ,-111.985931396 Links: No
3 people have recorded their role in this project.
Credits

Markus Epple   
Role: Added or clarified information.

DDI planned in Wilmington, NC area
Details    Edit
Updated: May 18, 2011
 Freeway Interchanges  Diverging Diamond Interchanges  Planned
Region: USA - Southeast Videos: No
Road: I-140NC 133 Pics: No
City: Castle Hayne ,NC ,US Docs: No
Lat/Lon: 34.316581726 ,-77.920204163 Links: No
2 people have recorded their role in this project.
Credits

An Ho   
Role: Added or clarified information.

Page 6 of 8, showing 15 records out of 109 total, starting on record 76, ending on 90

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