I observed the Raritan River eagles at Bridgewater on Tuesday April 10. I am pleased (and relieved) to say that they appear to be thriving. I was able to take a distant (somewhat grainy) photo, which shows one of the adults feeding the two juveniles. Additionally, I observed the two mature eagles soaring together and later perched on a sycamore branch. (Further up river toward Zarephath, I also saw an immature soaring.)
Thanks to all who responded to my initial concern (email in March) about the construction in proximity to the nest. The work in that area is complete, and construction is continuing at a safe distance from the nest.