Bridge of Oich, Invergarry

The Bridge of Oich is a taper principle suspension bridge, designed by James Dredge, across the River Oich near Aberchalder in Highland, Scotland. The bridge opened in 1854 and was used to take the main road traffic over the river until 1932.
The bridge was designed by James Dredge, an engineer from England. Dredge used his patented 'taper principle' design for the bridge. The bridge uses a double cantilever system where two opposing cantilevers are supported by suspension chains giving it the appearance of a classic suspension bridge. The span of the bridge is 155ft and the two main chains are 17ft apart. Each of the main chains is made from a series of wrought-iron eye-rods varying in length from 6ft to 7ft and with a nominal diameter of 7/8in. The main chains hang over 18ft high granite towers and one end of each chain is anchored to the bridge at mid-span and the other ends are anchored below ground inland of the bridge. The chains consist of twelve parallel rods at the tower and progressively reduce in width by one link at each joint towards each end of the chains as they get further from the towers. The decking is of timber, supported on trussed wrought-iron transoms.
In 1849 an old stone bridge that spanned the River Oich near Aberchalder was destroyed by flooding. To reduce the risk of a new bridge being damaged by similar flooding, it was decided that a single-span bridge was required to replace the old bridge. English engineer James Dredge was engaged to provide such a bridge. Dredge used his patented 'taper principle' for the bridge which was opened in 1854. Dredge's bridge carried the main road traffic across the River Oich until the construction of a two-lane concrete bridge in 1932. Following its withdrawal from service, the bridge fell into disrepair and had to be closed to public use. The bridge, which is now a listed building and a scheduled monument, was renovated for Historic Scotland in 1997, and returned to use as a public footbridge.
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  • Bridge of Oich on way to Edinburgh from fort Augustus. It's an old Heritage structure. Worth Spending few minutes for some snaps . Go onto bridge worth it  more »
  • For a mechanical engineer a nice piece of old bridge building art. Great what one made in 1849, with some steel rods.
    View original
  • Beautiful area. Old, hydraulic swing bridge. Moored up next to the bridge and was warmly welcomed by the attendant. Worth a visit.
  • It's a bridge, nothing more or less. Fantastic views, an active swing bridge next to it and a fair bit of history. Oh, and views. Stunning views
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