Fabulous shot... I was really expecting some boring black & white for the sake of black & white photo of a bridge in someone's backyard... (given the title.)
Kinda neat, but I wonder if you could pull the highlights down just a little to bring back in some of that detail.
Also maybe crop a little bit from the top? Ideally it would be better to swing the camera down so you simultaneously crop from the top and add more of the bridge, but...
It is perhaps tilted a bit to the left, that is accentuated even more by the perspective of the lens on the closer set of lights. A few minor tweeks in post processing and those minor issues can be easily remedied.
It has a very pleasing symmetry to it, especially with the opposing benches.