The important role contractors play in achieving sustainable outcomes for infrastructure projects

Influencing the sustainable outcomes of infrastructure projects is an important role played by contractors. One tool in their belt is Envision, a planning and design framework launched in 2012 by the Washington, D.C.-based Institute for Sustainable Infrastructure (ISI). For example, the industry’s understanding of resilience has grown tremendously, especially in the wake of hurricanes Katrina, Harvey and Irma.

Several construction-related credits have been included in the upgraded framework, including construction phase energy and water consumption, construction phase waste diversion and construction safety. To date, many Envision-verified projects have achieved verification either at or after 95 percent of the design process has been completed.

For example, on one recently verified project, the Boston Landing Station in Massachusetts, the contractor developed an approach to improve worker health and safety outcomes went beyond what was called for in the design stages of the project. The contractor’s recommendation was accepted, thus eliminating the need for more than 11,000 tons of new material.

Lastly, the contractor played a leading role in the identification and application of non-standard technology on the Exposition Transit Corridor—Phase 2 project in Los Angeles. The specialized track was constructed using spring elements under the floating track bed, allowing noise and vibration to dissipate horizontally across the track, rather than vertically.

These examples clearly demonstrate the vital role contractors can play in achieving sustainable outcomes for infrastructure projects.

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