Port Craig tramway

Ballasting of the newly laid logging railway

The 14.6 kilometres (9.1 mi) long main line ran from Port Craig in southerly direction, parallelly to the coast, to the Wairaurahiri River[1] In addition, there were 9.8 kilometres (6.1 mi) of spur lines.[2] The main line was surveyed with at maximum grade of 33 ‰ (1 in 29.5) and deep cuts and high trestle bridges much more elaborately than similar tramways.[3]

The main line used four large wooden viaducts built around 1925. The Percy Burn Viaduct is 125 m long and 36 m high, and was specified for the transport of the 80 t Lidgerwood steam winch, which had been imported from the United States as well as the heavy load of logging trains. During its construction, Australian hard wood was used, because it has a higher strength and durability than local timber. The trusses of the Sand Hill Viaduct consisted of round hard wood trunks, which were surrounded by less durable sap wood. The other viaducts were made from sawn timber, of which the sap wood had been removed.[4]

The four viaducts are the largest logging railway viaducts of New Zealand. They are listed buildings and are preserved in a structurally weak condition.[4]

The harbour and the sawmill of Port Craig, 1927

The bush land was less fruitful than expected. The American steam winch was overdimensioned for the NZ bus and shipping was more costly than expected because the new built harbour quickly silted, after the expensive breakwater had been completed, which made loading of ocean going vessels more complicated than originally envisaged. The oversaturated timber markets resulted in unattractive pricing, so that the company became unprofitable, and the investors could not be satisfied.[2]

At the end of 1928 the directors of the company resigned, and the company was closed with very little advance notice to its employees. Shortly after, Sims Cooper, one of the original investors, founded a new company, Holdings Limited, to takeover the liquidated assets of MTC. Holdings Limited employed several caretakers, to protect the assets at this remote location, and took-over the log harvesting and tramway licences formerly held by Marlborough Timber Company, in the hope of revamping business and getting a return on their investments.

In previous months, the MTC had obtained a new licence for harvesting the governmental forests north of the Maori land around Percy Burn Viaduct, as it became evident, that they couldn't get funding for a new bridge over the Wairaurahiri River, which would have been the only alternative, to obtain access to undepleted forest areas. Holdings Limited took over the licences for this area and maintained them from 1928 to 1941. In 1930 they briefly re-commissioned the sawmill, but the sinking timber prices due to the worldwide depression in the 1930s upset their plans. A team salvaged as much as possible in 1938 and demolished the remaining structures. Subsequently, the forestry commission objected to the last request to extend the milling licence and the licences expired.[2]

A & G Price Locomotive Ar #115 at Port Craig and after being sold

Saddle tank locomotive #28 on the Percy Burn viaduct

Steam locomotives were introduced in 1919.[9]

The A & G Price locomotive Ar #115 was used from 1926 to 1931. It was an articulated 0-4-0+0-4-0 Meyer locomotive. It was the largest and heaviest locomotive that Price have ever built.[10]

In addition a second-hand smaller saddle tank locomotive #28 was used.[3] It was a Davenport with works number 1862 of 1921. Its PWD number at the Public Works Department had been 528. It was sold to Bruce Bay Timber in 1935.[11]

Percy Burn Viaduct

Parts of the right-of-way of the former tramline were made accessible again in 2009 as the Hump Ridge Track and South Coast Track. The former school has been converted to an overnight shelter at the same time.[2]