The completion of the Johor–Singapore Causeway marked a significant moment in the connectivity between Malaysia and Singapore. Initiated in 1919 and finalized in 1924, this ambitious infrastructure project aimed to create a seamless land connection for travelers and trade between the two locations. Prior to the causeway, transportation relied heavily on water routes, which were often slower and less efficient for the burgeoning trade and travel demands of the time. The causeway, stretching about 1,056 meters, was initially designed for both road and rail traffic, integrating various forms of transport to enhance logistical capabilities.

Engineered using advanced techniques for the era, its construction faced various challenges, including optimal material selection and environmental considerations. The causeway’s opening drastically transformed the landscape of transportation in Southeast Asia. It symbolized a shift towards modernity, directly linking the economic hubs of Malaysia and Singapore. Established transport services soon emerged, offering services that connected commuters and goods across the causeway, leading to increased socio-economic activities culminating in a more robust border relationship.

With the opening, there was a surge in commerce between Johor and Singapore, creating new opportunities for businesses and facilitating more efficient movement for workers commuting between both regions. The impact went beyond mere transportation; it catalyzed the growth of new urban areas and fostered socio-cultural exchanges, providing residents on both sides of the causeway with the prospect of economic development and mutual collaboration. Thus, the Johor–Singapore Causeway stands as a testament to early 20th-century engineering prowess and a pivotal chapter in the economic interplay between Malaysia and Singapore.