Municipal bond analyst Eric Kazatsky of Bloomberg Market Intelligence has warned that the annual price hikes planned for Pennsylvania Turnpike over the next 27 years will likely drive away users, writes Joseph N. DiStefano for Philly.com.

The Pennsylvania Turnpike Commission, which just approved the ninth straight annual toll increase, uses the tolls to help pay for turnpike operations.

The funds also contribute to the highway’s annual capital budget of $500 million and help pay for mass transit systems including SEPTA.

However, Kazatsky said that the current six percent hike and planned future hikes will push drivers to use toll-free options such as the I-80, reducing the Turnpike’s revenues. He also noted that the Commission’s projection for future traffic growth on the Turnpike is too optimistic.

According to Kazatsky, annual traffic has increased on average of 0.43 percent over the last thirteen years, but the Commission projects it will now grow by 1.26 percent. This would mean an unlikely tripling in traffic over the next two decades.

However, the Commission disagrees. “We are fine with the 1.26 percent long-term traffic growth rate projection,” said turnpike spokesman Carl DeFebo. “Other toll roads have projected traffic growth patterns at this same level.”

Read more about the planned toll hikes at Philly.com by clicking here.