The Great Zig Zag

The Great Zig Zag (HM14MF)

Location: Clarence, New South Wales 2790
Country: Australia

S 33° 28.641', E 150° 13.262'

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A railway zig zag is a series of reversing ramps used to avoid very steep grades. John Whitton, Engineer in Chief NSW Government Railways 1856-90, chose this as the economical method for the descent from Clarence to Lithgow. Built during 1866-69 by contractor Patrick Higgins, it involved massive rock excavations, a tunnel and three stone arch viaducts. During its 41 years of operation it accelerated the development of western New South Wales and achieved world renown as a major engineering work.
HM NumberHM14MF
Year Placed1992
Placed ByDedicated by The Institution of Engineers, Australia
Marker ConditionNo reports yet
Date Added Monday, October 13th, 2014 at 6:06am PDT -07:00
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Locationbig map
UTM (WGS84 Datum)56H E 241767 N 6292335
Decimal Degrees-33.47735000, 150.22103333
Degrees and Decimal MinutesS 33° 28.641', E 150° 13.262'
Degrees, Minutes and Seconds33° 28' 38.46" S, 150° 13' 15.72" E
Driving DirectionsGoogle Maps
Closest Postal AddressAt or near 7 Specimen St, Clarence New South Wales 2790, AU
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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