Jump to: 183 South45SW TollTree CanopyCommunity CleanupsStormwater Management Plan

The Mobility Authority is committed to environmental stewardship by balancing the need for infrastructure improvements with preservation of the natural resources that make us proud to call Central Texas home. Delivering on that commitment, we have incorporated sustainable design principles into the development and construction of our projects; we are a longtime sponsor of TreeFolks, a Central Texas non-profit that seeks to strengthen communities through planting and caring for trees; we plan and carry out good neighbor community clean ups in partnership with Keep Austin Beautiful and other organizations; and we have a dedicated stromwater and water quality management plan. These initiatives allow us to minimize our environmental footprint on the Central Texas region while reinvesting in our community. 

183 South: Sustainability By Design

The sustainable measures being incorporated into the 183 South Project will result in less construction noise, less intrusive glare and disruptive light pollution, reduced emissions, greater aesthetics, and assurance that the project design is reflective of community values. The 183 South Project includes major investments in east Austin such as the restoration of the nationally-recognized historic Montopolis Bridge, which has been decommissioned from vehicular use and will be preserved for bicycle and pedestrian recreation and travel.

We are working to raise the bar industry-wide for what it means to design, build, and operate a sustainable roadway. The 183 South Project will be considered for certification by the most widely-used transportation sustainability rating system worldwide — Greenroads®. This third-party system evaluates design and construction against a set of criteria, and assigns a rating to truly gauge environmental responsibility.

A Greenroads® rating will be assessed following project completion in 2020. For more information on Greenroads®, click here.

45SW Toll: Environmental Champion 

The Mobility Authority was honored to be the recipient of the 18th Annual Austin Chamber of Commerce Brookfield Residential Environmental Champion Award for our investment in sustainability, innovation, and leadership in the transportation industry, most notably on the 45SW Toll Road. The following best management practices (BMP) for water quality were implemented to manage the quantity and improve the quality of stormwater runoff with the goal of reducing contaminants collected by stormwater as it moves into streams and rivers:

  • Permeable Friction Course (PFC): PFC was used throughout the 45SW Toll Road. PFC is a porous roadway surface used as an overlay on top of a conventional roadway surface. PFC comes with many benefits, including its ability to reduce water spray which improves visibility and safety.
  • Water quality ponds: Water quality ponds provide stormwater control by retaining and treating stormwater runoff. The ponds’ physical, biological and chemical processes work to remove pollutants, particulates, organic matter and metals before water is released into the environment.
  • Vegetative controls: In addition, grassy swales are included along the 45SW Toll corridor which work to channel and treat stormwater runoff. Vegetation decreases the speed at which the runoff moves to enable absorption into the soil, which acts as a natural filter. Linear sections of land called Vegetative Filter Strips were installed along sections of the project to act as a buffer between the project and the protected areas around it. Strips work similarly to swales by slowing runoff and filtering it through plants, roots and soil.
  • Hazardous materials traps: Hazardous materials traps are located at all stormwater discharge points (or outfalls) to creeks and waterways to prevent the accidental release of hazardous materials into a waterway.
  • Phased construction
  • No use of herbicides
  • Containment area for fuel and hazardous material storage during construction
  • Minimum 200-foot fueling buffer from nearest sensitive karst feature and water crossing
  • Educational signage along the 45SW Toll shared use path. 
For more information on the environmental controls on 45SW Toll, click here. 
 

Expanding the Urban Tree Canopy

We partnered with TreeFolks and two major employers along the 183 South corridor—NXP and H-E-B, to sponsor the installation of irrigation systems at Norman Elementary School and Pecan Springs Elementary School, both located near the project corridor. We held community tree planting events at each schoolyard where volunteers planted shade and fruit trees and spread mulch.

Community Cleanups and Good Neighbor Initiatives

The Mobility Authority is committed to being a proactive force in the communities we serve. We actively engage with and supports local organizations, communities and neighborhoods by participating in and sponsoring events.

We’ve participated in numerous activities and initiatives to date, including community cleanups with Keep Austin Beautiful, tree planting events and mulch-spreading initiatives with TreeFolks to protect our environmental resources, and more.

We’ve had the opportunity make a meaningful impact on the communities we serve, in collaboration with the groups and neighbors who have called upon us. We value those trusted partnerships and thank all those who have welcomed our efforts.

If your organization has an event you’d like our support with, such as a park or stream cleanup, or other environmentally educational activity, please contact us!

Mobility Authority Stormwater Management Plan 

In Central Texas, our surface and groundwater resources are precious commodities. Stormwater has the potential to carry pollutants from road right of way into Texas's water bodies. That's why the Mobility Authority, through our Storm Water Management Program, is implementing measures to help protect water quality and reduce pollution in stormwater from our roads and road projects.

The Mobility Authority demonstrates its dedication to stormwater management practices through a variety of activities including inspecting our construction projects to reduce sediment, installing water quality ponds to efficiently treat roadside runoff, and utilizing environmentally friendly materials to address snowy and icy winter roads.

The Mobility Authority Storm Water Management Program reduces pollutants in our stormwater system to improve the quality of water leaving our roadways into local lakes, creeks and rivers. The Storm Water Management Program addresses the following:

  • Public Education, Outreach and Involvement
  • Illicit Discharge Detection and Elimination
  • Construction Site Stormwater Runoff Control
  • Post-Construction Stormwater Management in New Development and Redevelopment
  • Pollution Prevention and Good Housekeeping for Municipal Operations

If you have input on stormwater management or water quality, or if you have observed a spill or other environmental concern along one of our roadways, We want to hear from you.

Need More Information?

We welcome your comments and questions. Give us a call or send us a note and we'll be happy to talk with you!

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