Gender inequality in engineering career fields has been a source of social and economic disturbances for many years. In several cases, women are underrepresented, and disparities persist despite policies that have focused on initiatives to promote gender equality in the industry, and the inadequacy of tools for measuring and analyzing the imbalance confounds the problem. This study investigates women's underrepresentation in engineering careers from 2011-2017, by aggregating data from 17,889 demographic profiles of the U.S. Department of Transportation (USDOT) workforce. The objective of the study was to perform a descriptive analysis to (1) explore women's representation in the USDOT, and (2) discover the factors that can reduce or eliminate the low representation of female engineers and if there is any wage gap that exists between the genders. This includes the impact of factors such as job location, education level, type of appointment, job position and its importance, level of experience, and supervisory role of the employee. According to the outputs, women hold fewer high-level positions than men in the USDOT, but no significant gender-related wage inequality exists. The findings can help public and private organizations design legislative initiatives to achieve greater gender equality and assist employers of engineering organizations in moving toward a more gender-diverse working environment to reduce or eliminate gender inequality and its consequent challenges.