Topics › Transportation 26487466 / Arizona © Photoquest | Dreamstime.com Backgrounder Phoenix’s traffic congestion is expected to worsen despite $70 billion in transportation spending plans Vehicle hours of delay spent in Phoenix's traffic congestion are expected increase by at least 50% at all times of day by 2050. Leonard Gilroy Vice President of Government Reform February 17, 2022 Download: Phoenix’s traffic congestion is expected to worsen despite $70 billion in transportation spending plans