Drilled shafts are a commonly utilized foundation type for bridge construction, especially for bridges involving large loads or difficult ground conditions. Proper construction is required to ensure satisfactory performance of the shafts, and concrete placement is among the most critical aspects of drilled shaft construction. Concrete has evolved to continuously be effective in the construction of modern drilled shafts as they continue to grow larger. Previous issues with concrete used in drilled shafts included flowability and ensuring the concrete was uniformly spread; these issues have been resolved with the introduction of high performance self-consolidating concrete but has introduced new problems with bleed and segregation. Concrete segregation describes the separation of concrete components causing a non-uniform mix. The term 'bleed' is a type of segregation but is specifically used to describe the separation of water from the concrete mix and can be seen, in varying amounts, rising to the surface of certain concrete pours. Occurrences of bleed and segregation can compromise the integrity of a drilled shaft. The research described in this report was initiated with the objective of quantifying bleed and segregation by addressing three questions: what is the best method to predict and quantify bleed and segregation of a concrete mix, what characteristics of a mix design cause the most bleed and segregation, and what are the consequences of bleed and segregation. A better understanding of concrete bleed and segregation predictors and effects can lead to more reliable drilled shaft concrete mix designs. To analyze these objectives, ten different concrete mixes were used to test and create scaled drilled shafts measuring 4 feet in diameter and 42 inches tall. Each concrete mix was run through a series of quality assurance/control (QA/QC) tests to then compare to data collected while the test shafts were being cured, which includes the total volume of bleed water produced, the bleed water flow rate, peak ...