The Seto Ohashi Bridge was the world's longest two-tiered bridge system upon its completion in 1988.
The project required 10 years of labor and involved the construction of six individual bridge structures.
The museum grounds feature a replica of the bridge's massive suspension cable cross-section to demonstrate its internal tension structure.
The Banno Island location was specifically selected as a central staging ground during the construction phase of the bridge pylons.
The museum houses original film footage documenting the underwater construction of the piers, which were installed in depths up to 45 meters.
The Seto Ohashi Bridge Memorial Museum is situated on Banno Island in Sakaide, Kagawa, dedicated to the engineering and construction of the Seto Ohashi Bridge, a 13.1-kilometer multi-tiered bridge system connecting Honshu and Shikoku. The facility occupies a site adjacent to the Higashiyama Kaii Setouchi Art Museum and offers structural models, video archives, and historical documentation detailing the decade-long construction process that concluded in 1988. The building design reflects regional maritime influences and provides an elevated observation deck overlooking the Seto Inland Sea. Visitors can examine the technical challenges of underwater bridge foundation work and steel construction techniques unique to the project. The museum also maintains information regarding the environmental impact and ecological preservation efforts surrounding the bridge's construction.
The outdoor observation deck providing an unobstructed perspective of the North and South Bisan-Seto Bridges.
Visit on a clear day to fully utilize the observation deck for views of the surrounding islands.
Check the museum's digital archives for interactive maps of the bridge structure if they are available during your visit.
Combine this visit with a stop at the nearby Higashiyama Kaii Setouchi Art Museum to optimize travel to Banno Island.
Attempting to walk across the Seto Ohashi Bridge itself, as it is primarily designed for high-speed road and rail traffic rather than pedestrian access.
Closed on Mondays (or the following day if Monday is a national holiday).
