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1st DDI in Delaware
Details    Edit
Updated: Jan 30, 2017
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Region: USA - Southeast Videos: No
Road: DE-1Wrangle Hill Rd Pics: No
City: Bear ,DE ,US Docs: No
Lat/Lon: 39.580162048 ,-75.661819458 Links: No
1 people have recorded their role in this project.
Credits

Jonathan Dough   
Role: No Role

Gate City Blvd DDI
Details    Edit
Updated: Aug 19, 2016
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Region: USA - Southeast Videos: No
Road: I-73W Gate City Blvd Pics: No
City: Greensboro ,NC ,US Docs: No
Lat/Lon: 36.026763916 ,-79.88318634 Links: No
1 people have recorded their role in this project.
Credits

Jonathan Dough   
Role: No Role

Village Rd DDI
Details    Edit
Updated: Aug 19, 2016
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Region: USA - Southeast Videos: No
Road: US-17NC-133 Pics: No
City: Leland ,NC ,US Docs: No
Lat/Lon: 34.232299805 ,-77.994064331 Links: No
1 people have recorded their role in this project.
Credits

Jonathan Dough   
Role: No Role

Inter-County Connector CFI
Details    Edit
Updated: Nov 02, 2015
 Arterial Intersections  Continuous Flow Intersections  CFI - 1,3,4-legs  Existing
Abstract: This is a brand-new intersection originally built as a CFI. It's the second CFI in Maryland, and is of a similiar design to the first, with both being T-intersections with a single crossover on the terminating leg. Opened November 2014.
Region: USA - Southeast Videos: No
Road: Baltimore AveMD-200 Pics: No
City: Laurel ,MD ,US Docs: No
Lat/Lon: 39.065677643 ,-76.881057739 Links: No
1 people have recorded their role in this project.
Credits

Jonathan Dough   
Role: No Role

2nd CFI in Georgia
Details    Edit
Updated: Oct 29, 2015
 Arterial Intersections  Continuous Flow Intersections  CFI - 2-legs  Planned
Abstract: Crossovers on east and west legs. Expected to be second CFI in Georgia.
Region: USA - Southeast Videos: No
Road: US-78GA-124 Pics: No
City: Snellville ,GA ,US Docs: No
Lat/Lon: 33.857582092 ,-84.019935608 Links: No
1 people have recorded their role in this project.
Credits

Jonathan Dough   
Role: No Role

1st CFI in Georgia
Details    Edit
Updated: Oct 29, 2015
 Arterial Intersections  Continuous Flow Intersections  CFI - 2-legs  Existing
Abstract: Crossovers on SW and NE legs. Will be first CFI in Georgia.
Region: USA - Southeast Videos: No
Road: GA-400GA-53 Pics: No
City: Dawsonville ,GA ,US Docs: No
Lat/Lon: 34.363471985 ,-84.03629303 Links: No
1 people have recorded their role in this project.
Credits

Jonathan Dough   
Role: No Role

I-40 & TN-66 DDI
Details    Edit
Updated: Sep 17, 2015
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Region: USA - Southeast Videos: No
Road: I-40TN-66 Pics: No
City: Kodak ,TN ,US Docs: No
Lat/Lon: 35.983253479 ,-83.608123779 Links: No
0 people have recorded their role in this project.
Credits


Riverton Quadrant
Details    Edit
Updated: Aug 14, 2015
 Arterial Intersections  Quadrants  Jughandle  Existing
Abstract: SW Quadrant roadway to handle all left turns. Intersection being rebuilt as part of project to replace major bridge just to the south.
Region: USA - Southeast Videos: No
Road: N Shenandoah AveStrasburg Rd Pics: No
City: Front Royal ,VA ,US Docs: No
Lat/Lon: 38.946533203 ,-78.199607849 Links: No
2 people have recorded their role in this project.
Credits

Markus Epple   
Role: No Role
Jonathan Dough   
Role: No Role

North Frederick Superstreet
Details    Edit
Updated: Apr 18, 2015
 Arterial Intersections  ThrU-Turn/U-Turn Intersections  TTI - Superstreets, Unsignalized  Existing
Abstract: Good example of semi-rural unsignaled superstreet.
Region: USA - Southeast Videos: Yes
Road: US-15Hayward Rd Pics: No
City: Frederick ,MD ,US Docs: No
Lat/Lon: 39.456096649 ,-77.399398804 Links: No
1 people have recorded their role in this project.
Credits

michelle Zhang   
Role: No Role

J. Carter Blvd DDI
Details    Edit
Updated: Apr 18, 2015
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Region: USA - Southeast Videos: No
Road: I-85Jimmy Carter Blvd Pics: No
City: Norcross ,GA ,US Docs: No
Lat/Lon: 33.912075043 ,-84.207817078 Links: No
0 people have recorded their role in this project.
Credits


3-Level Continuous Green T
Details    Edit
Updated: Apr 15, 2015
 Freeway Interchanges  Other Grade Separated Interchanges  Existing
Abstract: Cross street is separated vertically into 2 different levels. All through movements are free flowing. All right turn movements are merge-controlled. Two signals manage only remaining conflict, between left turn movements.
Region: USA - Southeast Videos: No
Road: I-95FL-84 Pics: No
City: Fort Lauderdale ,FL ,US Docs: No
Lat/Lon: 26.088459015 ,-80.168373108 Links: No
2 people have recorded their role in this project.
Credits

Michael Troxell   
Role: No Role
Markus Epple   
Role: No Role

D'Iberville Half-DDI
Details    Edit
Updated: Mar 28, 2015
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Abstract: New interchange with ramps only to and from points west on I-10. New half-interchanges also being built on south and east legs of I-10/I-110 interchange.
Region: USA - Southeast Videos: No
Road: I-10D'Iberville Blvd Pics: No
City: D'Iberville ,MS ,US Docs: No
Lat/Lon: 30.450689316 ,-88.903526306 Links: No
1 people have recorded their role in this project.
Credits

An Ho, PM   Dev.
Role: Construction Manager

Military Hwy CFI
Details    Edit
Updated: Mar 25, 2015
 Arterial Intersections  Continuous Flow Intersections  CFI - 2-legs  Existing
Abstract: Crossovers on north and south legs. Construction began August 2016.
Region: USA - Southeast Videos: No
Road: E Princess Anne RdNorthampton Blvd Pics: No
City: Norfolk ,VA ,US Docs: No
Lat/Lon: 36.874771118 ,-76.210739136 Links: No
1 people have recorded their role in this project.
Credits

Jonathan Dough   
Role: No Role

West Ashley Superstreet
Details    Edit
Updated: Mar 22, 2015
 Arterial Intersections  ThrU-Turn/U-Turn Intersections  TTI - Superstreets, Signalized  Planned
Abstract: Main Rd is one of two gateways to Johns Island, a popular recreation destination. Current traditional signal has high crash rate which is main reason for redesign.
Region: USA - Southeast Videos: No
Road: US-17Main Rd. Pics: No
City: Johns Island ,SC ,US Docs: No
Lat/Lon: 32.802623749 ,-80.109367371 Links: No
0 people have recorded their role in this project.
Credits


Rural SC Superstreet
Details    Edit
Updated: Mar 22, 2015
 Arterial Intersections  ThrU-Turn/U-Turn Intersections  TTI - Superstreets, Unsignalized  Existing
Abstract: Intersection upgraded due to poor safety record. Superstreet design chosen after Oakley Rd failed warrants for traffic signal.
Region: USA - Southeast Videos: No
Road: US-52Oakley Rd Pics: No
City: Moncks Corner ,SC ,US Docs: No
Lat/Lon: 33.125900269 ,-80.029464722 Links: No
0 people have recorded their role in this project.
Credits


Waugh Chapel Superstreet
Details    Edit
Updated: Sep 19, 2014
 Arterial Intersections  ThrU-Turn/U-Turn Intersections  TTI - Superstreets, Signalized  Existing
Region: USA - Southeast Videos: No
Road: Crain HwyWaugh Chapel Rd Pics: No
City: Gambrills ,MD ,US Docs: No
Lat/Lon: 39.039123535 ,-76.675323486 Links: No
0 people have recorded their role in this project.
Credits


Holly Springs Superstreet
Details    Edit
Updated: Sep 09, 2014
 Arterial Intersections  ThrU-Turn/U-Turn Intersections  TTI - Superstreets, Signalized  Existing
Region: USA - Southeast Videos: Yes
Road: W Holly Springs RdNC-55 Bypass Pics: No
City: Holly Springs ,NC ,US Docs: No
Lat/Lon: 35.657569885 ,-78.848434448 Links: No
0 people have recorded their role in this project.
Credits


Valleydale Rd ThrU-Turn
Details    Edit
Updated: Sep 05, 2014
 Arterial Intersections  ThrU-Turn/U-Turn Intersections  TTI - Median U-Turn (Michigan U)  Existing
Abstract: US-280 left turns made via loons. Cross street has direct left turns.
Region: USA - Southeast Videos: No
Road: US-280Valleydale Rd Pics: No
City: Birmingham ,AL ,US Docs: No
Lat/Lon: 33.420139313 ,-86.694511414 Links: No
2 people have recorded their role in this project.
Credits

An Ho   
Role: Planning Manager
An Ho   
Role: Planning and Concept Development

Pleasant Hill DDI
Details    Edit
Updated: Sep 01, 2014
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Region: USA - Southeast Videos: No
Road: Pleasant Hill RdI-85 Pics: No
City: Duluth ,GA ,US Docs: No
Lat/Lon: 33.952262878 ,-84.129997253 Links: No
1 people have recorded their role in this project.
Credits

Jonathan Dough   
Role: No Role

1+ leg CFI
Details    Edit
Updated: Aug 20, 2014
 Arterial Intersections  Continuous Flow Intersections  CFI - 1,3,4-legs  Existing
Abstract: Camellia Blvd (SE leg) has standard CFI crossover. The opposite leg has left turns cross over oncoming traffic onto a slip road which intersects Johnston St at a separate intersection a short distance away with development in between.
Region: USA - Southeast Videos: No
Road: Camellia BlvdJohnston St Pics: No
City: Lafayette ,LA ,US Docs: No
Lat/Lon: 30.193731308 ,-92.058578491 Links: No
1 people have recorded their role in this project.
Credits

Jonathan Dough   
Role: No Role

I-75 @ University Pkwy DDI
Details    Edit
Updated: Jul 08, 2014
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Abstract: Massive DDI will feature 10 through lanes on the cross street. Construction started August 2015 and expected to take 2 years.
Region: USA - Southeast Videos: No
Road: University PkwyUniversity Pkwy Pics: No
City: Sarasota ,FL ,US Docs: No
Lat/Lon: 27.388498306 ,-82.448791504 Links: No
2 people have recorded their role in this project.
Credits

An Ho   
Role: No Role
Jonathan Dough   
Role: No Role

Contra-flow Left Interchange in Coconut Creek, FL
Details    Edit
Updated: Jun 11, 2014
 Freeway Interchanges  Contra-flow Left Interchange  Existing
Abstract: http://attap.umd.edu/UAID_gss.php?UAIDType=18&iFeature=3
Region: USA - Southeast Videos: No
Road: FL-869Lyons Rd Pics: No
City: Coconut Creek ,FL ,US Docs: No
Lat/Lon: 26.301208496 ,-80.186454773 Links: No
1 people have recorded their role in this project.
Credits

Markus Epple   
Role: No Role

Chapel Hill RCUT
Details    Edit
Updated: Jun 11, 2014
 Arterial Intersections  ThrU-Turn/U-Turn Intersections  TTI - Median U-Turn (Michigan U)  Existing
Abstract: Rare example of a Restricted Crossing U-Turn (RCUT) intersection that is signalized, but is not a superstreet. All left turns and cross-street through movements must use turnbacks.
Region: USA - Southeast Videos: No
Road: N Fordham Blvd Pics: No
City: Chapel Hill ,NC ,US Docs: No
Lat/Lon: 35.94203949 ,-79.018264771 Links: No
2 people have recorded their role in this project.
Credits

Markus Epple   
Role: No Role
Jonathan Dough   
Role: No Role

First (Maybe) SPUI
Details    Edit
Updated: Jun 10, 2014
 Freeway Interchanges  Noteworthy Single Point Urban Interchange (SPUI)  Existing
Abstract: This is normally cited as the first ever SPUI, though some claim a SPUI in Fort Worth, TX is older.
Region: USA - Southeast Videos: No
Road: FL-55 Pics: No
City: Clearwater ,FL ,US Docs: No
Lat/Lon: 27.960546494 ,-82.730010986 Links: No
1 people have recorded their role in this project.
Credits

Markus Epple   
Role: No Role

Holly Point Quadrant
Details    Edit
Updated: Jun 10, 2014
 Arterial Intersections  Quadrants  w/Interior Development  Existing
Abstract: At main intersection, left turns from Sam Furr Rd onto Statesville Rd are restricted. These lefts are redirected to use Holly Point Dr in SE quadrant.
Region: USA - Southeast Videos: No
Road: Statesville RdSam Furr Rd Pics: No
City: Huntersville ,NC ,US Docs: No
Lat/Lon: 35.442264557 ,-80.865470886 Links: No
1 people have recorded their role in this project.
Credits

Markus Epple   
Role: No Role

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