PennDOT has officially announced the design plan for the Parkway East Squirrel Hill Tunnel interchange, known as "Alternative F."

The goal of the project, according to PennDOT, is to "improve the safety of the 100,000 vehicles traveling through daily and reduce crashes near the existing interchange."

The current design of intertwining lanes dates back to the 1950s.

"It was innovative at the time, but definitely outdated with the current traffic volumes we have," PennDOT District 11 senior project manager Cheryl Solosky said.

In 2021, PennDOT started tossing around ideas to make traffic flow easier in that area. After getting feedback on several designs over the past few months, they decided on Alternative "F."

"Primarily based on feedback, this is the alternative that we decided to pu

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