The section west of Sabine Pass was previously proposed on September 19, 1956, as SH 362 (for access to the proposed levee; to be cancelled when construction was completed), but the designation was changed to FM 1900 on December 13, 1956 (still was to be cancelled when construction was completed), and FM 1900 was completed, and FM 1900 was cancelled on October 30, 1958, due to completion of construction.
The western part of Sabine Pass was initially proposed as SH 362 for levee access but later changed to FM 1900. Both designations were intended to be cancelled upon completion, and FM 1900 was completed before being cancelled on October 30, 1958.