It has been over 50 years since South Korea began to build the expressway. However, no research has been conducted on the main facilities of the expressway itself. I analyzed the distribution and name characteristics of expressway junctions which are considered important among main facilities by drivers. As of June 2020, the analysis results of 108 junctions are as follows. The simple total number of junctions for each route was higher for the main trunk lines, but the number of junctions per unit distance was much higher for shorter lines. By region, junctions were concentrated around major cities such as Gyeonggi and Gyeongnam, but unlike the size of area, the number of junctions relative to the population was smaller on the contrary. In word type analysis, ‘Sino-Korea’ word was 99.1%. In syllable analysis, the number of syllable was averaged 2.17 and syllable of junction names has exponential distribution. In name source analysis, junction name related to administrative district name was outstanding with 87.0%; junction names related to town･township name and city･county･district name accounted for the major of that. These characteristics are largely influenced by ‘the criteria for granting facility names’ that follows the administrative district name first.