Streetviews from Sep 2022 and Jun 2019 clearly show - there is a gap between two barriers, between bridge and ramp. Although it is quite narrow, it is possible to cycle through the gap, without dismounting. If there's been any recent changes to this area and now you really need to climb over the barrier, then it makes sense to delete the path.

Personally, I would be very cautious to delete any paths that show clear activity in Strava heatmap.