Sustainability


It is the mission of the North Texas Tollway Authority to provide a safe and reliable toll road system, increase value and mobility options for our customers, operate the Authority in a businesslike manner, protect our bondholders and partner to meet our region’s growing need for transportation infrastructure. The NTTA designs, constructs, and maintains its tollways and infrastructure in a manner that ensures corridor consistency and environmental sustainability and sets the course for future sustainability initiatives. The NTTA is specifically committed to minimizing impacts on North Texas’ communities, including their natural resources and cultural values, by effectively streamlining the process required to provide approvals for transportation infrastructure projects, in compliance with applicable law, while maintaining safety, public health and environmental protection.

Sustainability Initiatives

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Renewable Energy

The NTTA is specifically committed to reducing its carbon footprint and minimizing impacts on North Texas communities, including their natural resources. In 2013, the NTTA signed a four-year contract with a new power provider, Green Mountain Energy, ensuring that at least 10 percent of the Authority power use will be wind-sourced beginning in January 2014. 

The renewable energy to supply the NTTA will be purchased in the form of wind Renewable Energy Certificates, the industry standard for accounting for renewable electricity generation. Purchasing RECs ensures that 10 percent of the estimated energy used by the NTTA is added to the U.S. power grid from renewable sources. By choosing renewable energy over standard system power, the NTTA will avoid producing 7.4 million pounds of carbon dioxide over the course of the four year commitment - the equivalent of taking 720 cars off the road for a year. 

Landscaping

The NTTA selects native landscaping, when possible, to aid in tree and shrub sustainability and to reduce maintenance costs. Additionally, the NTTA took steps to replace woodlands and wildlife habitat impacted by construction of the President George Bush Turnpike extension to I-30 in Garland. We’ve also established a maintenance program to protect trees and shrubs.

Landscape Materials 

Air Quality

The NTTA is doing its part to reduce ozone-causing traffic congestion through cashless toll collection . Converting to cashless tolling removes idling, acceleration and deceleration at toll plazas, reducing fuel consumption by 6 to 12 percent and resulting in a 45 to 80 percent reduction of vehicle emissions. The NTTA has made another significant contribution to improving air quality by replacing its operations fleet with hybrid, flex-fuel, and low-sulfur diesel vehicles.

Water Quality and Conservation

The NTTA protects our water resources through aggressive storm water management and cleanup programs, complete turf coverage to reduce erosion and limited use of herbicides and pesticides. Additionally, the NTTA also uses a vehicle wash area that drains directly into an oil/water separator. To conserve water resources, the NTTA uses a smart irrigation system, which adjusts run times based on weather conditions and eliminates run-off. In 2007 alone, the NTTA’s smart water landscape program saved almost 50 percent, or approximately 11.7 million gallons, of water.

Preventing Storm Water Pollution

 Other Sustainability Initiatives

The NTTA used recycled material in the construction of its interchange at the Sam Rayburn Tollway and U.S. Highway 75 to minimize the project’s impact on the environment. Three concrete recycling machines were set up on the construction site to crush and repurpose existing asphalt, cutting costs and saving time in the construction process.