Gilmerton lift bridge closed
Photo taken by Douglas Butler in May 2013
License: Creative Commons Attribution (CC BY)
View this photo on Flickr
BH Photo #289019
The source of the quadrangle map name is the name given by the USGS to their map of that area. "Norfolk South" is the name of the USGS map where Chesapeake is located. Both BridgeHunter and LandmarkHunter give the name for reference.
If you're referring to the quadrangle map listing "Norfolk South", that's a separate map categorization altogether. It's more of a function that ties into sister site, LandmarkHunter.
Admittedly, I don't know how to really explain it other than it's essentially an apples-to-oranges comparison.
recognizes that it's in the city of Chesapeake.
identifies it as being in that named map area, for LandmarkHunter purposes.
You should probably ignore the Quadrangle listing altogether unless you use LandmarkHunter regularly.
I do not know how many times I have to report it, but this bridge is listed as being in Norfolk as well as Chesapeake but this bridge is 3.5 miles(as the crow fly's) from the Norfolk city line and is entirely built in and taxed in the city of Chesapeake and Chesapeake alone.