This climbing rattan palm is known from three sterile herbarium collections, all from the area around Sorong, in the north-west of Indonesian New Guinea. Although this species is known only from sterile material, the genus Calamus was recently revised (Henderson 2020) so most of the available material in herbaria will have been reviewed by taxonomic experts. No information is available on the population size or population trend of this species, and this will remain the case without greater botanical collecting effort in northwest New Guinea. The area of occupancy (AOO) and extent of occurrence (EOO) are both calculated as 8 km². However, there is a lot of uncertainty in these values, as two of the three known specimens are from the 19th century and there is a lack of locality information on all three specimen labels. All the records for this species appear to originate from within the urban area of the city of Sorong, which has expanded rapidly since 1995 when the last specimen was collected. Given this, it is very possible that there is a continuing decline in the area and quality of available habitat, though nothing is known about the life history and ecology of this species. The number of locations is uncertain due to the lack of information about exactly where the known herbarium specimens were collected, and uncertainty as to the scale and severity of threats. The uncertainty in the known sites for this species, and the fact that further taxonomic research is needed as there is no known fertile material, means that the species could feasibly have a threat status from Least Concern if found to occur more widely in the surrounds of Sorong, to Critically Endangered if genuinely restricted to documented collection sites. It is therefore designated as Data Deficient.

Calamus interruptus is known from three sterile herbarium collections, all from the area around Sorong, in the north-west of Indonesian New Guinea. Two were collected in the 19th century by Beccari from "Ramoi" which, according to the map in Martelli (1921), is within the present-day city of Sorong, in the bay to the south of the airport. The species was re-collected in 1995, also within the city limits of Sorong. The only record of its elevation is 80 metres asl.

No numerical population information is available, and the current population trend is unknown.

This climbing rattan palm is found in lowland rainforest. All the known specimens are sterile, so nothing is known about its life history or ecology.

The only records for this species are within the current urban area of Sorong, which has expanded rapidly since 1995 when Calamus interruptus was last collected. Satellite photos of the area show large areas of deforestation linked to urbanisation on the Sorong plain, but there are areas of forest left, particularly on the higher elevations to the east of the city. There are also large active oil palm concessions to the south-east of the city. This species can probably persist in secondary or disturbed forest, but the uncertainty in the locality information on the known specimens makes it impossible to know whether the forest where it was collected is still extant.

This specific species is not known to be used, however many Indonesian Calamus (rattan) species are listed on PROSEA as useful plants, usually harvested for their cane (stems), which have numerous uses e.g. basket making, mat weaving, and chair making.

The Sorong area has one protected area, a Nature Recreation Park managed by the state agency Konservasi Sumber Daya Alam Papua Barat. This protected area is to the east of the estimated collection sites of the three known specimens, but due to the uncertainty in the locality information, the species may occur here. More botanical surveys are needed to collect basic data on this species. In West Papua there is a recent 'conservation province' initiative and in 2019 a special provincial regulation was ratified with aims to set aside 70% of the land as conservation areas, review land-based business licences and promote sustainable development with a commitment to preserve biodiversity and maintain ecological balance (INFS 2019). This species is only known from sterile material, so more research into its taxonomic limits and ecology is needed to aid conservation planning.