The bridges in the mountainous region of East & North Sikkim are being most probably built by Indian Military, by using a very simple, fast, economical & trusted technique. The support skeleton of bridges is in steel & flooring is of wooden logs or steel sheets. This photo was taken on my Nikon D5200 camera, using AF-S DX VR Zoom 55-300 mm(4.5-5.6G) lens. The Image Size is 13.3MB, Dimensions 6000*4000 pixels, Flash Not Used, Focal Length 58mm, Expo. Time 0.00025s(1/4000), F-f/4.5, ISO 1800.