Gundagai:  Prince Alfred Bridge & Timber Viaduct (background), and the Railway Bridge (foreground).

The photo is representative of the destructive power of water and the manpower that built two massive bridges (in 1867 and 1903) to overcome it.  It also represents the horse/steam/ automotive power of the vehicles that safely traversed the bridges in that bygone era. 

My photo, taken in October 2015, depicts the erosive power of the elements to slowly convert those two massive structures to dust and rust, particularly the Prince Alfred Bridge (older of the two bridges).  

[The town of Gundagai (NSW) in 1852 was destroyed by a flood that raged 4 to 5 metres deep across the river flats of the Murrumbidgee River.  There were 78 recorded deaths, making it Australias worst natural disaster.  Eventually the two bridges were constructed to span the major flood plain.  The Price Alfred Bridge (road bridge) was a wrought iron truss and timber beambridge with a timber viaduct; it totalled 921 metres in length.  The Railway Bridge was a latticework of wooden trusses, curving across the flood plains, and spanning the River with a bridge made of steel; it totalled 819.4 metres in length].