Remember: The safest place right now is at home.
I passed by this point on March 28 [it is about 15 minutes from the Reeves Meadow Visitor Center following the "red dot" to "yellow" paths from the parking area along Stony Brook.]
As can be seen from this photo, the damage could prove to be an obstacle for hikers with dogs or children, or for seniors. I didn't measure the height of the remaining structure, but it is probably 7 to 8 feet tall, and the exposed footing more treacherous than the picture shows.
For the time being, if you can't climb to the remaining structure of the bridge there is no viable walk around to complete the loop hike.