Allentown (Pennsylvania) Service Plaza only maps from northbound traffic.

🚧 THIS IS A TICKET MIGRATED FROM UPVOTY. The original ticket and comments will be available for a limited time over at:
https://abrp.upvoty.com/b/report-a-bug/allentown-pennsylvania-service-plaza-only-maps-from-northbound-traffic/
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If traveling on I-476 Southbound and getting off at the Allentown Service Plaza at Mile 55 (address: 5052 Cetronia Rd, Allentown, PA 18106, USA), it does not recognize there is an off / on ramp there. It does know there is one for I-476 Northbound traffic, so you're routed further south to the Mile 44 exit at Quakertown, back up the Northbound to the Service Plaza. Then to rejoin going Southbound it directs you Northbound one mile to Exit 56 (Allentown proper), do a turn-around there, and then back on the I-476 south.

This adds 22 minutes to your journey and a significant battery drain.

I believe the problem may be that OpenStreetMap does not recognize the Southern parking lot at the Service Plaza can be looped like the Northern half is.

Here's a route plan. Zoom in on the first Waypoint to see the loop happening.

https://abetterrouteplanner.com/?plan_uuid=7decbf6e-79ea-4276-9f95-3d34e61a3b2a

The screenshot has red ovals showing where the Southbound traffic is looped at the bottom of the picture to then head north again to access the Waypoint, and then sent further north to rejoin the Southbound traffic again.