TRB’s National Cooperative Highway Research Program (NCHRP) Web-Only Document 110: Supplementary Cementitious Materials to Enhance Durability of Concrete Bridge Decks includes background information and a hypothetical case study used to help develop NCHRP Report 566. The Statistical Experimental Design for Optimizing Concrete (SEDOC), the computational tool for the concrete mixture optimization methodology, and the user’s guide are available in a ZIP format for download.