The relationships between governments at different levels are vital to the ongoing success of this project. This began in the project structuring phase, where funds were provided by federal, state, county and city sources, with the City of Miami also granting land access. The USD $150 million contingency fund set up by the Procuring Authority to mitigate the risk associated with unforeseen ground conditions was jointly funded by the Procuring Authority and the Miami-Dade County. The promise of ongoing funding to the Procuring Authority is particularly important given the decision not to impose tolls, as this increased the amount of money required from the government. The Procuring Authority executed a funding agreement with the city and county, but these authorities had no direct oversight over the project.