Diverging Diamond Interchange

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Welcome to the official website of the diverging diamond interchange. Here, you can learn all about the diverging diamond interchange including:

• What is the diverging diamond interchange (DDI) and how it works
• How the design can significantly improve traffic operations
• Why the design is considered a safer design than other diamond interchange forms
• Why this concept is such a low cost solution
• The history of the DDI
• Specific features related to the design

This website is brought to you by ATS/American. Although this website is targeted primarily to transportation engineers and planners, it also provides the background necessary that allows any transportation enthusiast to learn about this innovative design. All questions, comments, and suggestions can be directed to [email protected].  Additional updates will be placed on the website when possible.

Diverging Diamond Interchange Locations

AL AK AZ AR CA CO CT DE FL GA HI ID IL IN IA KS KY LA ME MD MA MI MN MS MO MT NE NV NH NJ NM NY NC ND OH OK OR PA RI SC SD TN TX UT VT VA WA WV WI WY DC Operational In Construction Advanced Design In Study

Latest DDI Openings

Paducah, Kentucky

I-24 @ US 60

DDI - Open

West Des Moines, Iowa

I-80 @ Alice’s Road

DDI - Open

College Station, Texas

FM 2818 @ FM 60

DDI - Open

Brevard County, Florida

I-95 @ Viera Boulevard

DDI - Open Categories Locations

• Bowtie Interchange

  The bowtie is an alternative to the Michigan left format…

• CFI

  A continuous flow intersection (CFI), also called a crossover displaced…

• DDI

  A diverging diamond interchange (DDI) is a type of diamond…

• Interesting Elements

  Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do…

• J-Turn

  The J-turn is an alternative to traditional roadway intersections on…

• Jughandle

  A jughandle is a type of ramp or slip road…

• Median U-Turn

  Median U-turn crossovers eliminate left turns at intersections and move…

• Quadrant Roadway

  A quadrant roadway intersection adds an additional “quadrant roadway” between…

• Superstreet

  A superstreet is a type of road intersection that is…

• Alabama
• Alaska
• Arizona
• California
• Canada
• Colorado
• Connecticut
• Delaware
• Denmark
• Florida
• Georgia
• Idaho
• Illinois
• Indiana
• Iowa
• Kansas
• Kentucky
• Louisiana
• Maine
• Maryland
• Massachusetts
• Michigan
• Minnesota
• Mississippi
• Missouri
• Nebraska
• Nevada
• New Hampshire
• New Mexico
• New York
• North Carolina
• Ohio
• Oklahoma
• Oregon
• Pennsylvania
• Rhode Island
• Saudi Arabia
• South Africa
• South Carolina
• South Dakota
• Tennessee
• Texas
• United Arab Emirates
• Utah
• Vermont
• Virginia
• Washington
• Wisconsin
• Wyoming

45 Categories 49 Locations 202 Resources

Latest News & Innovative Projects

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Paducah, Kentucky

I-24 @ US 60

DDI - Open

West Des Moines, Iowa

I-80 @ Alice’s Road

DDI - Open

College Station, Texas

FM 2818 @ FM 60

DDI - Open

Brevard County, Florida

I-95 @ Viera Boulevard

DDI - Open

Miami, Florida

NW 57 Avenue @ SR 836 Toll Road

DDI - Open

Riyadh, Saudi Arabia

Prince Turki Ibn Abdulaziz Al Awwa Road @ Makkah Al Mukarramah Service Road

DDI - Open

Riyadh, Saudi Arabia

King Khalid Road @ Prince Soud Bin Mohamad Bin Megren

DDI - Open

North Salt Lake, Utah

I-215 @ Redwood Road

DDI - Construction

Tucson, Arizona

I-10 @ Houghton Road

DDI - Planning

Phoenix, Arizona

I-17 @ Happy Valley Road

DDI - Construction

Phoenix, Arizona

Pecos Road @ Desert Foothills Parkway

DDI - Construction

Phoenix, Arizona

Pecos Road @ 17th Avenue

DDI - Construction

Haymarket, Virginia

I-66 @ US 15, VA 55

DDI - Open

Wesley Chapel, Florida

I-75 @ SR 56

DDI - Construction

Concord, New Hampshire

I-93 @ SR 9 (Exit 14)

DDI - Planning

Lacey, Washington

I-5 @ Marvin Road

DDI - Construction

Rapid City, South Dakota

I-90 @ Lacrosse Street

DDI - Design

Duncan, South Carolina

I-85 @ SC 290

DDI - Design

Fishers, Indiana

I-69 @ Campus Parkway

DDI - Open

Glasgow, Delaware

DE 1 @ DE 72 Wrangle Hill Road

DDI - Open

Manteca, California

SR 120 @ Union Road

DDI - Construction

Modesto, California

SR 99 @ Service Road

DDI - Design

San Bernardino, California

I-215 @ University Parkway

DDI - Planning

Providence, Rhode Island

I-95 @ Thurbers Avenue

DDI - Open

Abu Dhabi, United Arab Emirates

Dalma Mall Interchange

DDI - Open

Odense, Denmark

Interchange 52, E20 @ Assensvej

DDI - Design

Jeffersonville, Indiana

I-265 @ IN-62

DDI - Planning

Branson, Missouri

US 65 @ MO 248

DDI - Open

Miami, Florida

NW 27 Avenue @ SR 836 Toll Road

DDI - Open

Calgary, AB, Canada

Macleod Trail @ 162 Avenue South

DDI - Open

Manhattan, Kansas

K-18 @ K-113

DDI - Open

Lawrence, Kansas

K-10 @ US-40

DDI - Planning

Lenexa, Kansas

W 95th Street @ I-35

DDI - Open

Kansas City, Missouri

I-435 @ Front Street

DDI - Open

Alcoa, Tennessee

US 129 @ Middlesettlements Road

DDI - Open

Spanish Fort, Alabama

I-10 @ ALA 181

DDI - Construction

Homewood, Alabama

I-65 @ Lakeshore Drive

DDI - Planning

Maryland Heights, Missouri

I-270 @ Dorsett Road

DDI - Open

American Fork ,Utah

I-15 @ S500E

DDI - Open

American Fork ,Utah

I-15 @ Pioneer Crossing

DDI - Open

Lehi ,Utah

Veterans’ Memorial Highway @ UT-92

DDI - Open

Salt Lake City, Utah

2100 S Fwy @ Bangerter Highway

DDI - Open

Nogales, Arizona

I-19 @ Mariposa Road (SR 189)

DDI - Planning

Baton Rogue, Louisiana

I-10 @ Pecue Lane

DDI - Construction

Harrisonville, Missouri

I-49 @ Missouri 291

DDI - Open

Athens, Ohio

US 33 @ East State Street

DDI - Construction

Ceres City, California

SR 99 @ Lucas Road

DDI - Planning

Austin, Texas

MoPac (SR 1) @ Slaughter Lane

DDI - Open

Augusta, Georgia

I-20 @ Lewiston Road

DDI - Planning

Olathe, Kansas

K-10 @ Ridgeview Road

DDI - Open

Raleigh, North Carolina

I-40 @ Airport Boulevard

DDI - Construction

Beloit, Wisconsin

I-43 @ Gateway Boulevard

DDI - Planning

Raleigh, North Carolina

I-440 @ Western Boulevard

DDI - Design

Marion, Illinois

I-57 @ Morgan Avenue

DDI - Open

Anchorage, Alaska

Glenn Hwy/Muldoon Interchange

DDI - Open

Edmond, Oklahoma

I-35 @ Waterloo Road

DDI - Planning

Janesville, Wisconsin

I-90/39 @ SR 26 Milton Avenue

DDI - Design

Grand Rapids, Michigan

I-96 @ Cascade Road

DDI - Open

Mobile, Alabama

I-10 @ Canal Street

DDI - Planning

Fort Myers, Florida

Colonial Boulevard @ I-75

DDI - Planning

Springfield, Missouri

National Avenue at James River Freeway (Route 60)

DDI - Open

Springfield, Missouri

Kansas Expressway (Route 13) @ I-44

DDI - Open

Santa Fe, New Mexico

I-25 @ Cerrillos Road

DDI - Open

Ft. Wayne, Indiana

I-69 @ IN 1 DuPont Road

DDI - Open

Brigham City, Utah

I-15, I-85 @ US 91, 1100S

DDI - Open

Cedar City, Utah

I-15 @ UT 130, Cross Hollow Road

DDI - Open

Kansas City, Missouri

I-29 @ Tiffany Springs Pkwy

DDI - Open

Huntersville, North Carolina

I-77 @ Gilead Road

DDI - Planning

Concord, North Carolina

I-85 @ US 29-601

DDI - Construction

Winston-Salem, North Carolina

US 52 @ Research Parkway

DDI - Open

Lumberton, North Carolina

I-95 @ US 301

DDI - Open

Raleigh, North Carolina

I-440 @ Wake Forest Road

DDI - Design

South Africa

KwaMashu Interchange

DDI - Open

Rocky Hill, Connecticut

I-91 @ West Street

DDI - Planning

Denham Springs, Louisiana

I-12 @ Pete’s Highway

DDI - Planning

Port Wentworth, Georgia

I-95 @ Highway 21

DDI - Open

Urbandale, Iowa

I-80/I-35 @ Hickman Road

DDI - Planning

Waukee, Iowa

I-80 @ Grand Prairie Parkway

DDI - Open

Arden Hills, Minnesota

I-35W @ County Road 96

DDI - Open

Olathe, Kansas

I-435 @ Roe Avenue

DDI - Open

Cedar City, Utah

I-15 @ Cross Hollows Road

DDI - Open

Rogers, Minnesota

SR 101 @ County Road 144 (Diamond Lake Drive)

DDI - Open

St. Charles, Missouri

I-70 @ Fifth Street

DDI - Open

Rock Hill, South Carolina

I-77 @ SC 160

DDI - Planning

San Diego, California

I-805 @ Palm Avenue

DDI - Planning

Randolph, Missouri

I-435 @ MO 210

DDI - Construction

Rock Hill, South Carolina

I-77 @ Dave Lyle Boulevard

DDI - Planning

Rock Hill, South Carolina

I-77 @ Celanese Road

DDI - Planning

Clemmons, North Carolina

I-40 @ Lewisville-Clemmons Road

DDI - Planning

Atlanta, Georgia

GA 400 @ Abernathy

DDI - Construction

Norfolk, Virginia

I-264 @ Ballentine Boulevard

DDI - Planning

Jacksonville, Florida

I-95 @ SR 200/A1A

DDI - Construction

Raleigh, North Carolina

I-40 @ South Saunders

DDI - Planning

York County, South Carolina

I-77 @ Gold Hill Road

DDI - Construction

Las Vegas, Nevada

I-515 @ Horizon Drive

DDI - Open

Birmingham, Alabama

US 231 @ Northern Blvd.

DDI - Planning

Douglas County, Georgia

I-20 @ Chapel Hill Road

DDI - Planning

Alpharetta, Georgia

GA 400 @ Windward Blvd.

DDI - Planning

Gwinnett County, Georgia

SR 120 @ Duluth Highway

DDI - Planning Search for:

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