North Texas top engineering firms employed more than 1,600 licensed professional engineers last year.

The 34 engineering firms that responded to the Dallas Business Journal’s survey made more than $1.06 billion in local billings last year. The survey was conducted from Jan. 10 through Feb. 19 and was sent to more than 100 firms.

As a part of the survey, firms were asked about their most notable projects from last year. Read more about some of the highest-profile projects of the past year below.

JACOBS ENGINEERING: Trinity Metro TEXRail program management

Jacobs assisted on the 27-mile rail line project that connects Tarrant County to DFW International Airport. e line has stops in North Richland Hills and Grapevine, and started service last month on January 10. TEXRail was expecting 8,000 daily riders, but had more than 82,000 rides in the first 18 days, according to WFAA. Construction on the project began in 2016.

KIMLEY-HORN: The Star in Frisco

Kimley-Horn has been assisting with the Dallas Cowboys’ headquarters and the surrounding mixed-used development since the start of the project. e rm has provided civil design on each phase of the project including roadways and infrastructure. Kimley-Horn also provided drainage, traffic and parking studies.

FREESE AND NICHOLS: DFW Airport terminal renewal program

Freese and Nichols is working on the renovation of the original terminal areas at DFW International Airport as a part of a $3.2-billion Terminal Renewal and Improvement Program. Freese and Nichols is leading program management for the project that’s updating 40-year-old buildings at the airport. e goal of the project is to enhance operational efficiency and regulatory compliance, among other concerns, according to the rm’s website.

HDR INC.: I-35E managed lanes

HDR worked on one of Texas’ most congested highways by leading design management on Interstate 35E between Interstate 635 and U.S. 380 in Dallas and Denton Counties. According to the firm’s website, 28 miles of the roadway were widened. HDR was responsible for roadway, drainage, utilities, half of the bridge design, maintenance of traffic control and all of the right- of-way acquisition activities. The firm also played a role in the DFW Connector project at the confluence at State Highways 114 and 121.

HUITT-ZOLLARS: Walsh Ranch master-planned community

Huitt-Zollars served as the development engineer on the first phase of the Walsh master-planned community. Walsh spans Tarrant and Parker Counties, and the first phase consists of almost 3,000 homes on 1,700 acres. Huitt-Zollars also designed the roadways, utilities, drainage and storm water detention and irrigation.

JQ ENGINEERING: AT&T Discovery District

As part of a $100 million investment by telecom giant AT&T to its headquarters, JQ Engineering is working on the development of what the company is calling its Discovery District. e campus is expected to be completed later this year. The company is working with JQ to expand sidewalks, divert traffic to make it more pedestrian- friendly and change patterns around the headquarters.

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