
While we wait for the alleged “new bridge” to be built over the Indian River Inlet, the current Indian River Inlet Bridge is being “monitored,” but how closely?
Darrel Cole from DelDot said, “The bridge is safe,” when he was the guest on Thursday’s The Dan Gaffney Show. The “bridge” in question, of course, was the Indian River Inlet Bridge. Cole had this to say about what DelDot was doing to insure that we’re safe driving over the old Indian River Inlet Bridge:
“…we have what we call even ’tilt sensors’ that we work with the University of Delaware, next year we’re going to put on what we call sonar readings…” - Darrel Cole of DelDot AUDIO
Well, WGMD News has learned that right now, those “tilt sensors” touted as part of the monitoring system of the Indian River Inlet Bridge, aren’t set up for any kind of emergency alert activity. So, if the bridge starts tilting fast and furious right now, those “tilt sensors” aren’t going to alert any kind of an authority to stop you from driving over the bridge.
I spoke with Jack Puleo, Assistant Professor at the University of Delaware Department of Civil and Environmental Engineering, and he explained the “tilt sensors” to me.
There are “two small tilt sensors” on the Indian River Inlet Bridge. Puleo said fluid inside a sensor puts out an electronic charge that measures “tilt” “every two minutes and sends the data” to a “logger” at the Indian River Inlet. Then someone from the Department of Civil and Environmental Engineering from the University of Delaware’s Newark campus plugs their laptop into the system at the Indian River Inlet, downloads the information, then brings it back to Newark and it’s analyzed.
So how does it help during some kind of a bridge tilting emergency? Well, it doesn’t. Not right now, and not anytime soon.
According to Puleo, the sensor, “does not by itself have an emergency anything….” Eventually, there will be a “radio link” that will send “tilt sensor” information directly to the University of Delaware’s Department of Civil and Environmental Engineering in Newark and then, ultimately, a real time feed will go to DelDot.
DelDot, incidentally, is the only authority that actually can make the call to close the bridge, the University of Delaware does not have that power.
So let’s recap…we’re supposed to feel safe going over the Indian River Inlet Bridge because of “tilt sensors” that are not monitored daily, are not hooked up to any kind of emergency system, don’t automatically alert any kind of authority to take action like closing the bridge in the event of drastic or dangerous tilting, and they won’t do any of that stuff anytime in the near future.
But don’t worry, next year there will be “sonar readings” at the bridge. WHEW!
But wait, there’s more…here’s what DelDot’s Q & A released on October 26, 2007 (yes, that’s one week ago) has to say about the “tilt sensors:”
Most recently, DelDOT worked with the University of Delaware to install tilt sensors on the piers of the bridge. This latest effort will further enhance the Department’s current bridge monitoring program. These sensors will offer the department added confirmation that the bridge piers are stable. Should any change occur, the sensors would provide DelDOT an opportunity to promptly respond.
Right now, that would be “promptly respond” after someone downloads the data from the Inlet Bridge onto a laptop, takes it to the U of D in Newark, its analyzed by the Department of Civil and Environmental Engineering, and someone calls DelDot. But for the record, the “tilt sensors” are, in fact, installed. Kudos to DelDot.