Reference — https://files.paturnpike.com/production/docs/ptcconstructionsiteslibraries/mon-fayette---section-53a1/december-4-2023-mfe-weekly-construction-update.pdf

“Drivers traveling to southbound PA Turnpike 43 will experience a lane shift at the ramp on Jefferson Boulevard. Traffic has been shifted to the northbound ramp. Once over the bridge, traffic on the ramp will cross back over to southbound side. Drivers traveling southbound from southbound SR 51 need to stop at the end of the ramp before moving onto Jefferson Boulevard.”