I forgot to mention that the bridge shown on the postcard must have been that for the railway line in use during the Boer War. In the 1950's the railway line between Durban and Johannesburg was doubled and much of the old route near Estcourt was abandoned. It is still visible in places and, apart from the track itself, it is marked by peach trees, which grew from peach stones discarded by railway passengers.
The road bridge at Estcourt. which was in use during the Boer War, is still in use, although there is a new highway to Johannesburg that now by-passes the town. The bridge is at the foot of the hill on which Fort Durnford stands. This Boer War hospital is now a museum with a largely invisible curator and little on display to attract Boer War pilgrims. The road bridge is a typically Victorian one made of cast iron and no doubt exported to Natal when the railway line was under contruction in the late 1800's. There are probably dozens of these bridges scattered throughout the Old Empire. It nearly came to its end in the 1990's when one of the self-taught engineers, who are now employed by South African municipalties, fiddled with it and made it unsafe. It was rescued and still stands today, a testament to the skills and ingenuity of Victorian engineers and its durability in spite of mistreatment.
Brett