Discussion of a railway through Eidsberg was first debated in the municipal council on 5 January 1867.
The municipality approved a grant of 20,000 Norwegian speciedaler on 25 January 1873.
After it was decided in 1873 that the Østfold Line was to be built, the main route controversy regarding the Eastern Line was whether it should run via Mysen, or take a straight line from Askim to Rakkestad.
The railway engineers originally favored a bypass, but this was overruled by Parliament on 4 June 1874.
Eidsberg was granted three stations.
While there was much spectacle about the location of the other two, Mysen and Eidsberg, there was little debate about the location of Slitu.
The station and line opened on 24 November 1882, although temporary traffic had taken place since July.

A post office was opened at the station in 1883.
The arrival of the railway made it possible to sell fresh milk in the capital.
Slitu developed as one of the largest milk stations along the line, sending three to four full cars of milk each day.
In addition to western parts of Eidsberg, Slitu served farms in Trøgstad.
The caused the need for better roads and in 1890 and 1891 a new 4.5-kilometer (2.8 mi) road was built to Trøgstad.
An interlocking system was installed at the station on 18 May 1962.
This was in use until 17 March 1969, when the passing loop was removed.
The station subsequently became unmanned.

With the platform too short for new NSB Class 72 trains, the Norwegian National Rail Administration was required to lengthen the platform or close the station by 2015.
They estimated the costs at 13 million Norwegian kroner.
Slitu had limited patronage, with only 28 average daily boarding and disembarking passengers in 2008.
This compared for instance with almost 800 at Mysen Station.
Four station were therefore closed down on the line, including the next one westwards, Askim Næringspark Station.
This had a marked positive effect on ridership at Slitu, with the parking lot filling up and having to expanded.
Discussion of a railway through Eidsberg was first debated in the municipal council on 5 January 1867. The municipality approved a grant of 20,000 Norwegian speciedaler on 25 January 1873. After it was decided in 1873 that the Østfold Line was to be built, the main route controversy regarding the Eastern Line was whether it should run via Mysen, or take a straight line from Askim to Rakkestad. The railway engineers originally favored a bypass, but this was overruled by Parliament on 4 June 1874. Eidsberg was granted three stations. While there was much spectacle about the location of the other two, Mysen and Eidsberg, there was little debate about the location of Slitu. The station and line opened on 24 November 1882, although temporary traffic had taken place since July.
A post office was opened at the station in 1883. The arrival of the railway made it possible to sell fresh milk in the capital. Slitu developed as one of the largest milk stations along the line, sending three to four full cars of milk each day. In addition to western parts of Eidsberg, Slitu served farms in Trøgstad. The caused the need for better roads and in 1890 and 1891 a new 4.5-kilometer (2.8 mi) road was built to Trøgstad. An interlocking system was installed at the station on 18 May 1962. This was in use until 17 March 1969, when the passing loop was removed. The station subsequently became unmanned.
With the platform too short for new NSB Class 72 trains, the Norwegian National Rail Administration was required to lengthen the platform or close the station by 2015. They estimated the costs at 13 million Norwegian kroner. Slitu had limited patronage, with only 28 average daily boarding and disembarking passengers in 2008. This compared for instance with almost 800 at Mysen Station. Four station were therefore closed down on the line, including the next one westwards, Askim Næringspark Station. This had a marked positive effect on ridership at Slitu, with the parking lot filling up and having to expanded.
Slitu Station