Surface Transportation


Our surface transportation projects keep Texas moving, shape communities and power commerce. We've designed some of the state’s most notable highway projects, including interstate highways and regional tollways. Our rail clients have included Southern Pacific, Missouri Pacific and Union Pacific Railroad. In the 2000s, DEC formed a joint venture to develop Houston’s North Line light rail transit project. 




  • County and city roads and streets

  • State highways

  • Federal highways

  • Freeways

  • Tollways

  • Heavy rail

  • Light rail

  • Guided Rapid Transit (GRT)

  • Interchanges and bridges (for all the above)



  • Hardy and Sam Houston tollways in Houston region

  • Loop 289/US 82 Interchange, Lubbock

  • Interstate Highway 35 through New Braunfels

  • Houston rail transit

  • Grand Parkway (SH 99) Segment F-1, Harris County

  • Ship Channel Improvement Program (HCTRA)

  • IH 410, San Antonio

  • Beltway 8 Overpass at SH 288, Harris County

  • US 83 Thru McAllen

  • US 71, Texarkana

  • SH 96, League City

  • IH 35, Waco

  • IH 10, Chambers County

  • Fort Bend Parkway, Sugar Land