ASPIRE is a quarterly magazine published by PCI in cooperation with the associations of the National Concrete Bridge Council. The editorial content focuses on the latest technology and key issues in the Concrete Bridge Industry.

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12 | ASPIRE , Winter 2010 Using SCMs, the Arthur Ravenel Jr. Bridge over the Cooper River in South Carolina used highly impermeable concrete to achieve a 100-year service life. Photo: PB. P E R S P E C T I V E Sustainable or "green" design has entered the public consciousness and the mainstream media. Taxpayers, voters, politicians, and policymakers want assurance that public funds are being used to build environmentally sensitive infrastructure. The American Society of Civil Engineers (ASCE) recently launched an initiative to create a standard for defining and certifying green infrastructure projects and design professionals. While it is not yet clear when ASCE will be ready to introduce such a standard or if another organization will become pre-eminent, it is clear that sooner than later, a green standard will be incorporated into the bridge industry in the United States. In the concluding section of this article, the framework of a future green bridge standard is proposed from a review of the existing green standards that have been put into practice in other segments of the construction industry. Existing Green Standards These standards include LEED, SPiRiT, and Greenroads. LEED is the acronym for Leadership in Energy & Environmental Design; this standard certifies green building and neighborhoods. LEED is administered by the United States Green Building Council, a non-profit organization founded in 1993. SPiRiT is the Sustainable Project Rating Tool developed by the U.S. Army for their facilities. Since 2000, all new army facilities have been required to be built to LEED or SPiRiT standards. Greenroads was introduced in 2009 to certify roadway and pavement projects. This standard was developed at the University of Washington with funding from the United States Department of Transportation and several state departments of transportation. Greenroads' documentation states, "A future system focused on structures [i.e., bridges, tunnels, and walls] could be incorporated into Greenroads, but none currently exists." by Scott Snelling, Hardesty & Hanover LLP Toward Green BridGe Standards The following article presents the opinions of the author and not necessarily those of the publishers of ASPIRE.™ Readers are encouraged to respond with their opinions or ideas about this subject. ASPIRE_Winter10.indb 12 12/18/09 2:01:06 PM

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