Contracts were swiftly let, and the first sod was cut on 28 August 1827. The engineers were
Thomas Grainger and
John Miller, who were also engineers to the M&KR. The railway was planned to have gentle gradients and a good alignment, in contrast to the Monkland and Kirkintilloch line and other short mineral lines, and of the nearly extent, the first (eastern) were level and the remainder descended at 1 in 144. It was designed to be a locomotive line from the outset—a far-sighted decision, although it incurred considerable extra expense in heavier track construction. This required heavy earthworks, with large embankments at Gartcloss,
Gartcosh,
Provanmill and
Germiston, and deep cuttings at Gartcosh, Blackfauld and Provanmill. Moreover, considerable work was needed to form the railway across Robroyston Moss: after levelling, tree branches were placed on the track bed, and on them longitudinal timber beams were laid; cross-beams of Scotch fir were fixed on them, and then longitudinal planks of red pine, (broad x thick) were laid on them; finally the rails of were laid on the planks. Elsewhere on the line
fish bellied rails to
Birkinshaw's patent—another far-sighted decision—at in lengths were laid on stone blocks each weighing . The line was built to the track gauge, which had been adopted by the M&KR; interchange of wagons with that line was essential. Francis Whishaw, writing in 1839, stated that there were six level crossings on the line. Construction was delayed by exceptionally bad weather, and the company had to obtain parliamentary authority for additional capital, which it obtained in the '''''' (
11 Geo. 4 & 1 Will. 4. c. cxxv) on 17 June 1830 for a further £21,150. The first revenue traffic was carried in March 1831, when coal was sent eastwards from Gartcloss Colliery to the M&KR system, but during May 1831 horse-drawn coal trains from Monklands to Glasgow started operating. ==Operation and traffic==