Many bridges crossed Cheonggyecheon during the Joseon period, including Mojeongyo, Gwangtonggyo, Jangtonggyo, Supyogyo, Hyogyeonggyo, and Majeongyo. They were not merely pedestrian structures. Each was a node in the network linking palaces and government offices with markets and city gates. Who regularly crossed a bridge and what trades gathered around it reveal the capital's patterns of authority and everyday movement.
Gwangtonggyo supported traffic and ceremony at the center of the capital
Gwangtonggyo occupied an important route from Gwanghwamun through Jongno toward Sungnyemun, Seoul's south gate. Processions, goods, and ordinary pedestrians all crossed it. Stone taken from another structure was used in early Joseon bridge construction, and carvings remain on some blocks. The masonry therefore preserves political stories from the creation of the new dynasty as well as the history of transportation.
Supyogyo Bridge and the *supyo* gauge did not perform the same function
Supyogyo was a stone bridge for crossing the stream. The nearby *supyo* was a measuring device that indicated water height. They are remembered together as symbols of river management, but they were not the same structure. Monitoring and reporting changes in the water level during floods required more than accumulated experience; it required observation and administration.
A present location is not necessarily an original location
Supyogyo was dismantled during the covering of Cheonggyecheon and moved elsewhere; it now stands in Jangchungdan Park. Gwangtonggyo incorporates remains and components identified during the restoration project, but road and stream conditions required changes in location and composition. Distinguishing a reconstructed bridge, an original site, and relocated original stonework reveals the choices—and compromises—made in restoring Cheonggyecheon's history.