The following year, a large portion of the highway was removed from the state highway system. On October 19, 1937, between the SH-9 junction and US-66, the route ceased to be maintained by the Department of Highways. SH-30 still appeared as such on the 1938 state highway map, but with dashed lines, indicating the route was not maintained. By the 1940 edition, SH-30 was not marked at all on the map between just north of SH-9 to US-66 west of Erick. As a result, SH-30 was effectively in two sections, one running from Hollis to SH-9, and another between Erick and Sweetwater.