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Gilbert Chlewicki, PE

Transportation Engineer and Planner
Advanced Transportation Solutions
301.395.9971

gchlewicki@divergingdiamond.com

EDUCATION
CERTIFICATIONS
EXPERIENCE
SPECIALTIES
1st DDI opened to traffic in the US
Details    Edit
Updated: Aug 24, 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 ,-93.31073761 Links: No
1 people have recorded their role in this project.
Credits


Likely First DDI in NY State
Details    Edit
Updated: May 21, 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 ,-77.57559967 Links: No
2 people have recorded their role in this project.
Credits


Diverging Diamond in the Salt Lake City area
Details    Edit
Updated: May 17, 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


DDI planned in Wilmington, NC area
Details    Edit
Updated: May 17, 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


DDI on I-95
Details    Edit
Updated: May 17, 2011
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Region: USA - Southeast Videos: No
Road: I-95US 301 / Fayetteville Road Pics: No
City: Lumberton ,NC ,US Docs: No
Lat/Lon: 34.670288086 ,-79.005699158 Links: No
3 people have recorded their role in this project.
Credits


I-40 & Union Cross Rd DDI
Details    Edit
Updated: May 17, 2011
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Region: USA - Southeast Videos: No
Road: I-40Union Cross Road Pics: No
City: Winston-Salem ,NC ,US Docs: No
Lat/Lon: 36.075092316 ,-80.109291077 Links: No
2 people have recorded their role in this project.
Credits


Ashville Airport Rd DDI
Details    Edit
Updated: May 17, 2011
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Region: USA - Southeast Videos: No
Road: I-26NC 280 Pics: No
City: Asheville ,NC ,US Docs: No
Lat/Lon: 35.440288544 ,-82.535812378 Links: No
2 people have recorded their role in this project.
Credits


Davidson Hwy DDI
Details    Edit
Updated: May 17, 2011
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Region: USA - Southeast Videos: No
Road: I-85NC 73 Pics: No
City: Concord ,NC ,US Docs: No
Lat/Lon: 35.435066223 ,-80.657966614 Links: No
1 people have recorded their role in this project.
Credits


Poplar Tent RD DDI
Details    Edit
Updated: May 17, 2011
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Abstract: DDI openned in 2014. At 2 nearby intersections, left turns onto Poplar Tent Rd are restricted by superstreet designs, with one loon on either side of I-85.
Region: USA - Southeast Videos: No
Road: I-85Poplar Tent Road Pics: No
City: Concord ,NC ,US Docs: No
Lat/Lon: 35.402069092 ,-80.698188782 Links: No
1 people have recorded their role in this project.
Credits


Design/Build DDI in North Carolina
Details    Edit
Updated: May 17, 2011
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Abstract: I-485 will be completed as a beltway around Charlotte with a couple of new interchanges. The interchange at this location will be a DDI. Originally planned for a 10 lane SPUI bridge with failing LOS, I was able to convert this to a 7 lane DDI with LOS D or better for all movements in the design year.
Region: USA - Southeast Videos: No
Road: Mallard Creek RdI-485 Pics: No
City: Charlotte ,NC ,US Docs: No
Lat/Lon: 35.362003326 ,-80.749237061 Links: No
2 people have recorded their role in this project.
Credits


DDI in North Carolina
Details    Edit
Updated: May 17, 2011
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Abstract: Could possibly be the first DDI in North Carolina. North Carolina is planning many DDIs right now.
Region: USA - Southeast Videos: No
Road: I-77Catawba Ave. Pics: No
City: Cornelius ,NC ,US Docs: No
Lat/Lon: 35.483798981 ,-80.874794006 Links: No
1 people have recorded their role in this project.
Credits


Battlefield Road DDI
Details    Edit
Updated: May 17, 2011
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Abstract: Yet another DDI planned in Springfield, MO. Opened Valentine's Day, 2015.
Region: USA - South-Central Videos: No
Road: US-65Battlefield Road Pics: No
City: Springfield ,MO ,US Docs: No
Lat/Lon: 37.158187866 ,-93.22442627 Links: No
1 people have recorded their role in this project.
Credits


Chestnut Expy at US-65 DDI
Details    Edit
Updated: May 17, 2011
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Abstract: Another DDI in Springfield. Because the DDI is such a cost efficient solution, the Springfield area has been able to afford fixing many of their interchanges into DDIs.
Region: USA - South-Central Videos: No
Road: E Chestnut ExpyChestnut Expy Pics: No
City: Springfield ,MO ,US Docs: No
Lat/Lon: 37.209712982 ,-93.225944519 Links: No
2 people have recorded their role in this project.
Credits


Stadium Blvd DDI
Details    Edit
Updated: May 17, 2011
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Abstract: DDI in Columbia, MO opened 2013.
Region: USA - South-Central Videos: No
Road: I-70Stadium Blvd. Pics: No
City: Columbia ,MO ,US Docs: No
Lat/Lon: 38.968143463 ,-92.370903015 Links: No
1 people have recorded their role in this project.
Credits


First DDI in Branson, Missouri
Details    Edit
Updated: May 17, 2011
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Abstract: Construction began May 16, 2011 to convert interchange to a DDI.
Region: USA - South-Central Videos: No
Road: US-65US-65 BUS Pics: No
City: Branson ,MO ,US Docs: No
Lat/Lon: 36.657276154 ,-93.222045898 Links: No
2 people have recorded their role in this project.
Credits


Likely First DDI Considered in the US
Details    Edit
Updated: May 17, 2011
 Freeway Interchanges  Diverging Diamond Interchanges  Conceptual Planning
Abstract: New interchanges were considered at this location in 2005, with the widening of both Hanover Road and MD 295. The DDI was not selected as the chosen alternative because state officials did not want the first DDI in Maryland to go in a location where there would be a lot of unfamiliar drivers. This new interchange is planned to be the entrance to the rental car facility for BWI Airport.
Region: USA - Southeast Videos: No
Road: Maryland 295Hanover Road Pics: No
City: Hanover ,MD ,US Docs: No
Lat/Lon: 39.188228607 ,-76.715049744 Links: No
1 people have recorded their role in this project.
Credits


5th DDI in the US, first DDI east of the Mississippi
Details    Edit
Updated: May 17, 2011
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Abstract: Interesting use of the DDI design in a more rural environment.
Region: USA - Southeast Videos: No
Road: W Bessemer StBessemer Street/Middlesettlements Road Pics: No
City: Maryville ,TN ,US Docs: No
Lat/Lon: 35.764717102 ,-83.986946106 Links: Yes
3 people have recorded their role in this project.
Credits


Fourth DDI in US, Third DDI in Missouri
Details    Edit
Updated: May 17, 2011
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Abstract: Opened Summer 2010. Followed the success of the Springfield, Missouri DDIs. This location was planned for a DDI, before Springfield considered the DDI concept.
Region: USA - South-Central Videos: No
Road: Dorsett RdDorsett Road Pics: No
City: Maryland Heights ,MO ,US Docs: No
Lat/Lon: 38.71471405 ,-90.44745636 Links: No
1 people have recorded their role in this project.
Credits


2nd Diverging Diamond Interchange in US
Details    Edit
Updated: May 17, 2011
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Abstract: Opened in summer 2010. Second DDI opened to traffic in Springfield, which was also the second DDI to open in the US. Interchange got the go ahead to become a DDI after the success of the I-44/Route 13 DDI farther north in the city.
Region: USA - South-Central Videos: No
Road: U.S. 60S. National Avenue Pics: No
City: Springfield ,MO ,US Docs: No
Lat/Lon: 37.141815186 ,-93.27796936 Links: No
2 people have recorded their role in this project.
Credits


Diverging Diamond in KC
Details    Edit
Updated: May 09, 2011
 Freeway Interchanges  Diverging Diamond Interchanges  Existing
Abstract: 1st Planned Diverging Diamond in Missouri, but construction was delayed. Still will be the first DDI in the Kansas City area, but will be at least the fourth DDI in the state.
Region: USA - South-Central Videos: No
Road: Front StreetE Front St Pics: No
City: KCMO ,MO ,US Docs: No
Lat/Lon: 39.12940979 ,-94.498855591 Links: No
2 people have recorded their role in this project.
Credits


 
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