An on site engineering consultation made the following points.
Removing a dam is one thing, removing a dam next to a bridge is another.
After the dam is removed, expect the creek bed to be several feet lower.
The bridge piers must first be evaluated for depth and condition.
Did the Wildlands Conservancy provide the City of Allentown with the proper engineering studies to confirm that removing the dam will not have an adverse effect on the bridge? Is the City of Allentown willing to jeopardize the citizen's iconic Robin Hood Bridge to accommodate a pet project of the Wildlands Conservancy? The dam removal will significantly increase the velocity of the stream and accelerate pier scour. Will the Wildland Conservancy indemnify the City for consequential bridge re-mediation or replacement?