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If bridges are identified, you could navigate to one of them with Google Earth or another online map/satellite resource such as http://itouchmap.com/latlong.html that lets you navigate somewhere and obtain its lat/lon. Note the actual values in both decimal and dms, then figure out what they're giving you. I generally use MS Word and MS Excel to whip text ...


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I have used NBI data several times, once in this article I wrote for ArcUser years ago, and a couple of times in training sessions. Here's a function that will parse the space-delimited version of NBI and return you a list of some of the bits (haven't used it in a while, but should get you going). Also, here are the NBI data docs. def ...


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One row is too small a sample to be conclusive, but it certainly appears to be DMS (specifically, dDDMMSSHH, with an implied west longitude). You can confirm this by scanning the file and looking for a value of 60 or larger in any of the MM or SS elements. If it is in this format, then conversion to decimal degrees is as simple as parsing out the minutes ...



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