Buenos Aires Western RailwayFerrocarril Oeste de Buenos AiresLa Porteña locomotiveArgentine railway historybroad gauge railway

Buenos Aires Western Railway: The Dawn of Argentina's Rail Network

Buenos Aires Western Railway: The Dawn of Argentina's Rail Network The Buenos Aires Western Railway (BAWR), known in Spanish as the Ferrocarril Oeste de Buenos Aires, stands as a landmark...

Buenos Aires Western Railway: The Dawn of Argentina's Rail Network

The Buenos Aires Western Railway (BAWR), known in Spanish as the Ferrocarril Oeste de Buenos Aires, stands as a landmark of South American engineering. Inaugurated on August 29, 1857, it was the first railway ever built in Argentina, sparking a massive expansion of rail infrastructure that would transform the nation's economy and connectivity for nearly a century.

The line was pioneered by the locomotive La Porteña, a machine built by the British firm EB Wilson & Company in Leeds. This engine hauled the very first train, establishing a precedent for the use of British expertise and broad gauge technology in the region.

Invitation card to the opening of the line, 1857.
Invitation card to the opening of the line, 1857.

Key Facts

  • Inauguration: August 29, 1857.
  • First Locomotive: La Porteña (built by EB Wilson & Company).
  • Track Gauge: 1,676 mm (5 ft 6 in), known as broad gauge.
  • Original Terminus: Del Parque station (now the site of Teatro Colón).
  • Final Terminus: Once de Septiembre station.
  • Ownership: Transitioned from the Province of Buenos Aires to British investors in 1890, and finally to the Argentine State in 1948.

Foundations and Early Controversies

The vision for a railway was championed by intellectual figures such as Juan Bautista Alberdi, Domingo Faustino Sarmiento, and Justo José de Urquiza. In 1853, the Railway Society—a group of forward-thinking traders—requested a grant to build a passenger and cargo line. Interestingly, in 1854, the Society briefly proposed using horses instead of steam engines, citing the high cost of coal and the abundance of cheap horses in Argentina.

Some historians suggest this request stemmed from a fear among the public that the vibrations from steam locomotives would damage nearby buildings. Ultimately, the company opted for steam power, purchasing the equipment necessary to launch the service.

The Legend of La Porteña

A persistent legend once claimed that La Porteña was originally built for India and used during the Crimean War at the siege of Sevastopol, which supposedly explained the unusual broad gauge of the line. However, modern research has debunked this; records show the locomotive left Leeds in 1856, after the Crimea railway had already been demolished, and its technical specifications were unsuitable for the steep gradients of Balaclava.

Passenger coach.
Passenger coach.

Route Expansion and Urban Impact

The original route began at the Del Parque station, located opposite the Plaza del Parque (now Plaza General Lavalle). This area quickly urbanized due to the railway's presence. The initial 10 km line utilized a 1,676 mm gauge, mirroring colonial English railways.

Map of the line in the city of Buenos Aires, 1870.
Map of the line in the city of Buenos Aires, 1870.

The line progressed westward through several key points:

  • Almagro: An unmanned wooden station that served scattered farmhouses.
  • Caballito: Named after a horse-shaped weather vane on a local pulperia (general store).
  • San José de Flores: A small village consisting of a temple, plaza, and a few businesses.

Del Parque, the main station, demolished in 1889.
Del Parque, the main station, demolished in 1889.

La Floresta (c. 1869), the first terminus.
La Floresta (c. 1869), the first terminus.

Caballito station, c. 1878.
Caballito station, c. 1878.

By 1860, the route had extended to 39 km, reaching Moreno. The network continued to grow rapidly under the administration of the Province of Buenos Aires, reaching 177 km by 1870 and eventually spanning 1,210 km by 1889.

Ramos Mejía station, opened in 1858, still active.
Ramos Mejía station, opened in 1858, still active.

Morón station, 1910.
Morón station, 1910.

The Shift to Once de Septiembre

As Buenos Aires grew, the original Del Parque terminus became impractical and dangerous due to urban congestion. In 1883, the terminus was moved to the Once de Septiembre station. The former Del Parque site was eventually demolished to make way for the iconic Teatro Colón.

Once de Septiembre, the new terminus, opened in 1883.
Once de Septiembre, the new terminus, opened in 1883.

The Once de Septiembre terminus as seen at the beginning of the 20th century
The Once de Septiembre terminus as seen at the beginning of the 20th century

British Ownership and Electrification

In 1890, the railway was sold to H.G. Anderson on behalf of the Buenos Aires Western Railway Ltd for £8,134,920. Under British management, the network expanded further into La Pampa and south of Mendoza. A notable addition was a branch line to the Basilica of Our Lady of Luján to accommodate thousands of pilgrims.

Basílica station received pilgrims to Luján Basilica.
Basílica station received pilgrims to Luján Basilica.

To meet rising suburban demand, the BAWR began electrifying the line from Once de Septiembre to Moreno. Despite delays caused by World War I, the electrified service officially reached Haedo in 1923 and Moreno on May 1, 1924. This system used a third rail energized at 800 volts, making it the second electrified line in Argentina.

A train during the first days of the electrification of the service in 1923
A train during the first days of the electrification of the service in 1923

Nationalization and Legacy

The economic crash of 1929 and the disruptions of World War II severely impacted the British-owned lines. Between November 1, 1947, and March 1, 1948, the Argentine State, under President Juan Domingo Perón, acquired the railway assets, bringing the BAWR era to a close.

A Metro-Cammell wagon derailed in Liniers, 1890s.
A Metro-Cammell wagon derailed in Liniers, 1890s.

Hopper ballast wagon built by Leeds Forge Company in 1911.
Hopper ballast wagon built by Leeds Forge Company in 1911.

Steam locomotive, currently exhibited in Marcos Paz.
Steam locomotive, currently exhibited in Marcos Paz.

Period Owner Key Milestone Network Reach
1857–1863 Railway Society / Province Inauguration with La Porteña 10 km (Initial)
1863–1890 Province of Buenos Aires Move to Once de Septiembre (1883) 1,210 km (by 1889)
1890–1948 BAWR Ltd (British) Electrification of Once-Moreno line Expanded to La Pampa/Mendoza
1948 onwards Argentine State Nationalization of rail assets Integrated into state network

Frequently Asked Questions

What was the first locomotive used on the line?

The first locomotive was La Porteña, a 0-4-0 saddle tank engine built by EB Wilson & Company in Leeds, England. It could reach speeds of 25 km/h and weighed 15.75 metric tons.

Why was the terminus moved from Del Parque to Once de Septiembre?

The move was necessitated by rapid urbanization. The passage of trains through the city center had become dangerous for pedestrians and vehicles, leading to a municipal decree to relocate the terminus.

Was the railway always owned by the government?

No. It began with a mix of private and provincial support, became solely owned by the Province of Buenos Aires in 1863, was sold to British investors in 1890, and was finally nationalized by the Argentine State in 1948.

What was unique about the electrification of the BAWR?

The line from Once to Moreno used a third rail system energized at 800 volts. This required the elevation of platforms to accommodate new coaches with higher doors.

Where is La Porteña now?

La Porteña is currently on exhibit at the Provincial Transport Museum, part of the Enrique Udaondo Provincial Museographic Complex in Luján.