New York City’s infrastructure crisis stems from many issues, but one of the biggest problems in maintaining and expanding the city’s arteries are construction costs, which have ballooned into a stratosphere of unknown numbers and complete non-transparency on the part of city agencies. But now YIMBY has obtained data showing that salaries are up to 177% higher for unionized employees of contractors performing public works projects and building service work for government agencies than the prevailing wages of their respective private industry counterparts.