The line was extended to Paekakariki in 1886 .
The line was was electrified ( with locomotive - hauled carriage trains ) in 1940 after the opening of the Tawa Flat deviation .
The line was extended to Paekakariki in 1886 , and was electrified ( with locomotive - hauled carriage trains ) in 1940 after the opening of the Tawa Flat deviation .