Mangaroa station was not originally built prior to the opening of Kaitoke station as part of the Mungaroa Contract.

In 1876–1877, a privately owned 43-wagon-capacity siding was laid several chains to the north of Cruickshanks Tunnel to serve a timber mill that was owned, constructed and operated by James Duff Cruickshank, a member of the Wellington Provincial Council.
 His siding handled only timber traffic, but also became a stopping place for main line trains, and was known as Cruickshanks.
 He later built a second mill about half a mile closer to Mangaroa station, but the first remained in use until 1889 when the siding was lifted.
 The second mill operated its own tramway between the mill and station yard where timber was transferred to railway wagons.

Cruickshank owned 400 acres in the Mangaroa Valley and leased another 200 acres which he was required to clear and convert to pasture.
The inference is that he operated a mill in the Mangaroa Valley.
This land was lost in a mortgagee sale in 1882 when Cruickshank was declared bankrupt.

In 1912 Seed Bros, who had a mill in Colletts Road, were issued a licence by the railways department for a tramway into the  Mangaroa Station yard.
The tramway ran down Flux Road.

In 1915 signals were installed at Mangaroa Station.
The Railways Department needed two houses for staff.
 Arthur Seed offered his house which was at the right angle bend in Flux Road  but the offer was rejected.


During the construction of the Rimutaka Tunnel, a siding was laid from the eastern end of the Mangaroa Valley and several chains north-east of Mangaroa station to the new Maymorn Station yard.
 This was to enable work trains to bring lengths of welded rail, other supplies and equipment from the Hutt Workshops directly to the construction site.
 Once the tunnel and deviation opened, this siding, along with the rest of the old section, was lifted in 1956.

A military siding was established at Mangaroa in World War II to service RNZAF No.
2 Stores Depot that was later used by the Army.
 The depot opened in 1942 after being moved from the RNZAF station at Rongotai and was used until after the war.
 After the war the depot was a disposal site for surplus stores until RNZAF use ceased in July 1949, at which time it is assumed that the site was transferred to the NZ Army for their use.
Mangaroa station was not originally built prior to the opening of Kaitoke station as part of the Mungaroa Contract.
In 1876–1877, a privately owned 43-wagon-capacity siding was laid several chains to the north of Cruickshanks Tunnel to serve a timber mill that was owned, constructed and operated by James Duff Cruickshank, a member of the Wellington Provincial Council.  His siding handled only timber traffic, but also became a stopping place for main line trains, and was known as Cruickshanks.  He later built a second mill about half a mile closer to Mangaroa station, but the first remained in use until 1889 when the siding was lifted.  The second mill operated its own tramway between the mill and station yard where timber was transferred to railway wagons.
Cruickshank owned 400 acres in the Mangaroa Valley and leased another 200 acres which he was required to clear and convert to pasture. The inference is that he operated a mill in the Mangaroa Valley. This land was lost in a mortgagee sale in 1882 when Cruickshank was declared bankrupt.
In 1912 Seed Bros, who had a mill in Colletts Road, were issued a licence by the railways department for a tramway into the  Mangaroa Station yard. The tramway ran down Flux Road.
In 1915 signals were installed at Mangaroa Station. The Railways Department needed two houses for staff.  Arthur Seed offered his house which was at the right angle bend in Flux Road  but the offer was rejected.

During the construction of the Rimutaka Tunnel, a siding was laid from the eastern end of the Mangaroa Valley and several chains north-east of Mangaroa station to the new Maymorn Station yard.  This was to enable work trains to bring lengths of welded rail, other supplies and equipment from the Hutt Workshops directly to the construction site.  Once the tunnel and deviation opened, this siding, along with the rest of the old section, was lifted in 1956.
A military siding was established at Mangaroa in World War II to service RNZAF No. 2 Stores Depot that was later used by the Army.  The depot opened in 1942 after being moved from the RNZAF station at Rongotai and was used until after the war.  After the war the depot was a disposal site for surplus stores until RNZAF use ceased in July 1949, at which time it is assumed that the site was transferred to the NZ Army for their use.
Mangaroa railway station