La Paz / El Alto, Bolivia — Cable Cars as a Citywide Network

La Paz and El Alto are two neighboring Bolivian cities separated by some of the most challenging urban terrain in the world. The administrative capital, La Paz, occupies a steep Andean basin; El Alto spreads across the much higher Altiplano. Traffic must negotiate winding roads, steep grades and crowded streets as residents move between jobs, markets, schools and homes. Mi Teleférico turns that geography on its head: a fleet of small, brightly colored gondolas travels directly above the rooftops, climbing out of the basin and crossing the plateau as part of an integrated metropolitan transit network.

The first three routes—the Red, Yellow and Green Lines—opened in 2014. Rather than stopping at one spectacular lift, the state-owned operator and its engineering partners progressively developed multiple color-coded lines with stations, interchanges and connections to streets and other transport. By 2026 the metropolitan system comprised ten operating lines and approximately 33 kilometers of cableway infrastructure, according to the cableway supplier Doppelmayr and Bolivia’s Ministry of Public Works. The Red Line climbs roughly 400 meters from central La Paz toward El Alto; the Yellow Line negotiates an even larger vertical difference. Other lines move across neighborhoods, follow the lower parts of the valley, or connect transfer points on the plateau. The Silver and Purple routes show why the system should be understood as a network rather than an isolated tourist ride.

The technology uses continuously moving ropeway systems with detachable passenger cabins. In a station, a gondola slows for boarding while the haul rope continues moving. Outside it accelerates back to line speed and passes over streets on aerial cables and towers. Electric drives, tensioning equipment, terminal control systems, braking and automated safety monitoring form the hidden machinery behind the smooth ride. In a high-altitude city, a relatively small station footprint and the ability to cross difficult grades without a winding road alignment are major advantages. Stations and transfers are essential parts of the technology, not afterthoughts: a short aerial ride is useful only when people can reach the terminal and continue their journey.

The photographs make the urban-design argument tangible. Red cabins glide above dense blocks; yellow and green routes pass over changing topography; blue, purple and silver routes reach into El Alto; an orange line passes over settled neighborhoods on a wet morning. Behind it all stands the Andes, including Mount Illimani. The colored cabins appear playful, but what they represent is everyday mobility: a transport link that can bypass road congestion and overcome dramatic vertical separation.

Mi Teleférico is not a universal replacement for buses, rail or walking. Cableway capacity is bounded by cabin size and departure intervals, and large transfer flows can create queues. Wind, weather, power, evacuation procedures, accessibility, neighborhood impacts and lifecycle operating costs all matter. The lesson is that choosing a transport technology should start from the shape of the city and the needs of its residents—not the other way around. La Paz and El Alto illustrate how aerial ropeways can become a significant piece of a public transit system where conventional surface infrastructure faces steep physical constraints.