One of the most congested interchanges in the state has reached a major milestone: The first new bridge of the SH 121/I-635 interchange project has officially opened, taking traffic from northbound SH 26 to northbound SH 121. The work comes as part of a $370 million Texas Department of Transportation project to rebuild and widen SH 121 north of the Dallas-Fort Worth International Airport. This project will accommodate new interchanges at I-635 and FM 2499. The Bass Pro Drive bridge in Grapevine will also be widened to six lanes and reconstructed along with the frontage roads of Bass Pro Drive, SH 121 and FM 2499. Now that the new bridge is open, NorthGate Constructors needs to demolish the old bridge. That process started June 21. Drivers are encouraged to plan their routes accordingly for this weekend and next weekend as crews take on this portion of the project. The following closures are scheduled: 8 p.m. Friday, June 21-6 a.m. Monday, June 24:
  • Northbound SH 121 at Bass Pro Drive will be fully closed. Traffic will be detoured to the frontage road.
  • The northbound SH 26 off-ramp to northbound SH 121 will fully close. Traffic will be detoured to Bass Pro Drive.
  • Southbound SH 121 at FM 2499/Grapevine Mills Parkway will fully close.  Traffic will be detoured to the frontage road.
  • The southbound SH 121 frontage road at Grapevine Mills Boulevard will be fully closed. Traffic will be detoured to SH 26.
  • The westbound I-635 off-ramp to to southbound SH 121/eastbound SH 114 DFW Airport will fully close. Traffic will be detoured to Bass Pro Drive.
8 p.m. on June 26-6 a.m. on July 1:
  • The northbound SH 26 off-ramp to northbound SH 121 will fully close. Traffic will be detoured to Bass Pro Drive.
  • The southbound SH 121 frontage road at Grapevine Mills Trail will fully close. Traffic will be detoured to SH 26.
  • The southbound SH 121/FM 2499 off-ramp to I-635/Bass Pro Drive will fully close. Traffic will be detoured to the southbound SH 121 frontage road, then to SH 26.
  • Two right lanes will close on southbound SH 121 at FM 2499. Only one lane will remain open.
See below for a comprehensive detour map.