NorthGate Constructors will be conducting a traffic switch on southbound SH 121 beginning at 8 PM on Friday, 10/23 to 6 AM on Monday, 10/26. The following closure will be in place in order to safely complete this work.

Southbound SH 121 Mainlane Traffic Switch:

  • Full closure on southbound SH 121 at Sandy Lake Rd. Traffic will be detoured to the southbound SH 121 frontage road, SH 26, then Bass Pro Dr.
  • Two left lanes closed on northbound SH 121 at Bass Pro Dr.
  • Full ramp closure on westbound I-635 off-ramp to Bass Pro Dr. Traffic will be detoured to Freeport Pkwy.
  • Full ramp closure on northbound SH 121 off-ramp to Bass Pro Dr. Traffic will be detoured to Freeport Pkwy.

Click here for a comprehensive detour map. 

You can stay up-to-date on the project through our website, Facebook, Twitter, and our texting service! Simply text DFWC4 to 77222 and sign up for alerts on major impacts to the project.


Welcome to the new DFW Connector website! We’ve updated the look and feel of the site to make it easier to navigate and find all the project information you’re looking for. Need information on the current I-635/SH 121 interchange project, including lane closures? Check out the Present Construction tab. Need information on any of the work we’ve completed since 2010? Look at our Past Construction tab. You can find even more information through our Facebook feed (to the right) or Twitter (link at the bottom). As always, you can also stay in touch by emailing our team at or calling us at 877-411-4212.

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NorthGate Constructors

In response to the unique challenges of the DFW Connector project, two of Texas’ most respected organizations in the highway construction industry – Fort Worth-based Kiewit Texas Construction L.P. and San Antonio-based Zachry Construction Corporation – joined to form NorthGate Constructors, a Joint Venture.

With resources that included access to thousands of Texas-based employees and the nation’s largest privately owned equipment fleet, NorthGate Constructors delivered the DFW Connector project for TxDOT and the motorists of North Central Texas.