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43 Sustainable highway construction practices are best practices that meet the practical sus- tainability criteria for this guidebook: they (1) go above-and-beyond standard practice and/or required national regulatory minimums or (2) show innovation in meeting these standards and minimums in support of people and the environment. Chapter 7 is an expansion of Chapter 3; it catalogs 77 SCPs in 26 highway construction categories that impact 10 aspects of sustainability. SCPs are organized by highway construction and sustainability categories, which aid in searching for and cross-referencing SCPs. 7.1 Highway Construction Framework This guidebook divides highway construction into two basic levels: ⢠Project delivery. These practices are used to fund, procure, and deliver projects. They are usually administrative or process-oriented. ⢠Project. These practices administer, schedule, budget, and build projects. They can be admin- istrative, process-oriented, or activity-oriented. Highway construction categories are provided in Table 1 in Part 1 of this guidebook, and also reproduced here as Table 8. 7.2 Sustainability Framework This guidebook divides sustainability into its three common dimensions: human, environ- mental, and economic well-being (as seen in Table 2 in Part 1 of this guidebook, also reproduced here as Table 9). Within these dimensions, sustainability is broken down into 10 categories that are specifically chosen to show how these dimensions relate to highway construction. In other words, these dimensions show how sustainability is typically classified, and the categories are an aid in determining how highway construction impacts those dimensions. 7.3 Relating the Construction and Sustainability Frameworks Table 3 in Part 1 of this guidebook (reproduced here as Table 10) shows how the construction and sustainability frameworks relate to one another. This relationship can be useful in identify- ing SCPs that address specific sustainability categories. For instance, a project can identify sus- tainability objectives using the sustainability framework categories and can then choose relevant SCPs by using Table 10 to determine which highway construction categories and SCPs address the identified sustainability priorities. C H A P T E R 7 Construction and Sustainability Framework
44 Sustainable Highway Construction Guidebook Level Category Project Delivery Project Delivery Method Financing Procurement Contracting Project Scheduling Estimating Project Controls/Administration Earthwork Drainage/Sewer/Water Aesthetics Walls Bridges Pavement Work Zone Traffic Control Materials Safety Employment Training Community Outreach Noise Lighting Constructability/Deconstruction Quality Equipment Utilities Landscaping Table 8. Highway construction framework. Dimension Category Explanation Human Well-being Workers All those who work in the highway construction process. Neighbors and Stakeholders Those nearby and with a vested interest in the project. Users Users of the highway both during and after construction. Environmental Well-being Pollution Water/air pollution and waste associated with highway construction. Local Ecosystems and Habitat Nearby or related ecosystems and habitat affected by highway construction. Consumption Consumption of resources and materials associated with highway construction. Climate Impacts on the climate attributable to highway construction. Economic Well-being Project Budget Costs and benefits, both short- and long- term, directly associated with highway construction. Maintenance and Operations Follow-on processes affected by highway construction. Economic Development/Employment Economic or employment impacts associated with highway construction. Table 9. Sustainability framework.
Table 10. Highway construction and sustainability framework mapping. Level Category Project Delivery Method Financing Procurement Contracting Scheduling Estimating Project Controls/Administration Earthwork Drainage/Sewer/Water Aesthetics Walls Bridges Pavement Work Zone Traffic Control Materials Safety Employment Training Community Outreach Noise Lighting Constructability/Deconstruction Quality Equipment Utilities Landscaping If a Highway Construction Category addresses a Sustainability Category, the corresponding cell is colored green. Ec on om ic De ve lo pm en t/ Em pl oy m en t Project Project Delivery Cl im at e Pr oj ec t B ud ge t Po llu tio n Lo ca l E co sy st em an d Ha bi ta t Co ns um pti on W or ke rs N ei gh bo rs a nd St ak eh ol de rs Us er s Highway Construction Framework Sustainability Framework Human Well-being Environmental Well-being Economic Well-being M ai nt en an ce a nd O pe ra tio ns
