In the shadow of towering structures, a silent witness stands. The Old International Border Marker 255 whispers tales of treaties and floods. This granite sentinel, etched with the words “Boundary of the United States–Treaty of 1853–Re-Established by Treaties of 1882-1889,” marks a pivotal point in history. The Old International Border Marker 255 is one of 258 markers placed along the nearly 2,000-mile border between the US and Mexico. These markers, also known as Boundary Monuments or obelisks, originated from the Guadalupe Hidalgo Treaty of 1848 and the Gadsden Treaty of 1853. These treaties redefined the international boundary.
The Old International Border Marker 255 has a particularly intriguing story. It wasn’t always in its current location. A flood in the late 1800s washed away the original marker. A replacement was installed. Later, the original marker 255 was rediscovered. It was then relocated to its current spot near the San Ysidro Port of Entry. The marker’s sides display the names of the international commission members who meticulously determined the boundary between 1892 and 1896.
The original boundary survey, starting in 1849, involved 52 monuments. Many were simple stone mounds. Seven were more substantial, made of marble or cast iron. The first marker, a polished marble obelisk, was placed near the Pacific Ocean, between Tijuana and San Diego. This spot, near Monument No. 258, later became Friendship Park, dedicated in 1971 by First Lady Pat Nixon. The Old International Border Marker 255, however, is made of granite. This distinguishes it from the earlier marble monument and the many simpler stone markers. The granite speaks to a more permanent and resolute demarcation of the boundary.
The Old International Border Marker 255 stands as a testament to the complex history of the US-Mexico border. It has witnessed changing landscapes and evolving agreements. It has survived floods and relocations. It remains a silent observer of the ongoing story of two nations.