On page 52 of this official study from over a decade ago it was recommended to close one of the redundant car roads connecting MLK to the Strawberry Mansion Bridge to create a proper pedestrian / bike connection: www.lowermerion.org/home/showpub... This has still not been started:
On the MLK side of the bridge there used to be a dedicated pedestrian / bike trail, in addition to a car road with a pedestrian staircase. Presumably around the time of I-76 they removed that trail and staircase to make for exclusively 2 car roads. Sidewalks & crossings were never re-added.