Crossing into Argentina & Brazil

Beyond the ferry: Uruguay's other borders

The Buenos Aires ferry crossings get most of the attention on this site, and for good reason — they're how the large majority of visitors move between Uruguay and Argentina. But Uruguay shares real land and river borders with both of its neighbors, and travelers combining Uruguay with a wider Southern Cone trip, rather than a Buenos Aires-only add-on, have several other genuine crossing points worth knowing about: a set of road bridges over the Uruguay River into Argentina, and an unusual, genuinely walkable open border with Brazil.

None of these crossings carry the volume of visitor traffic the Colonia and Montevideo ferries do, and they're realistically most relevant if your route already has you in the country's interior or its northern departments — Salto, Paysandú, Tacuarembó or the Rocha coast toward Chuy — rather than something worth a special detour from Montevideo.

Chuy and Chuí: a border you can walk across

The best-known and most genuinely unusual of Uruguay's land crossings sits on its northeastern edge, where the Uruguayan town of Chuy meets its Brazilian twin, Chuí, directly across a single street. This isn't a border in the conventional sense of a fence, a river or a checkpoint gate — the international boundary runs down the middle of the avenue itself, with Uruguay (Spanish, pesos) on one side and Brazil (Portuguese, reais) on the other, close enough that residents and day visitors cross back and forth on foot without any barrier stopping them.

That open, walkable character is genuinely part of what makes Chuy worth a stop in its own right, quite apart from any practical need to cross the border there — it's a rare chance to stand in a place where two countries and languages meet with essentially no visible boundary at all, and a natural blend of Spanish and Portuguese, often called portuñol, is spoken throughout the town.

There's an important caveat, though, and it matters for any traveler actually continuing their journey rather than just visiting for the novelty: the open street is not the same thing as a formal immigration process. Travelers crossing here who intend to continue into either country — rather than just glancing across the street — need to stop at the dedicated, integrated border post on the highway to get proper entry and exit stamps. Skipping that step because the street crossing feels informal can cause real problems later, including fines, when you eventually try to leave either country through a different, more conventional checkpoint. Treat the casual street crossing and the formal immigration process as two separate things, and handle both if you're actually entering Brazil rather than just looking at it.

The Uruguay River bridges into Argentina

Three road bridges span the Uruguay River, the natural boundary between the two countries along Uruguay's western edge north of the Buenos Aires ferry routes, each connecting a Uruguayan town to an Argentine counterpart. Southernmost is the Puente Libertador General San Martín, linking Fray Bentos in Uruguay's Río Negro department to Puerto Unzué near Gualeguaychú in Argentina's Entre Ríos province — commonly cited as the longest international bridge in Latin America, inaugurated in 1976 after a construction process that began with studies in the 1960s.

Further north, the Puente General Artigas connects Paysandú to Colón, a bridge inaugurated in 1975 and, according to Uruguayan and Argentine sources, the first major piece of physical infrastructure directly linking the two countries — historically carrying mostly local, cross-border traffic between the two riverside towns rather than long-distance travelers.

Northernmost is the Salto Grande bridge, built directly atop the Salto Grande hydroelectric dam and connecting the Uruguayan city of Salto to Concordia in Argentina. Inaugurated in 1982 after construction beginning in the 1970s, it carries both road and rail traffic and operates around the clock, with facilities for both tourism and freight crossings — a genuinely functional, well-equipped crossing rather than a minor back road, reflecting the dam's own significance as a binational infrastructure project.

None of these three crossings are on the standard tourist route through Montevideo, Colonia and the coast — they matter mainly to travelers whose Uruguay trip already includes the interior's northern departments, particularly Salto's thermal springs, or who are planning a longer overland route through Argentina's Entre Ríos province rather than a Buenos Aires-only visit.

Rivera and Uruguay's other Brazil crossings

Chuy isn't the only place where Uruguay and Brazil meet as twin cities without a hard physical barrier between them. Further west along the same northern border, Rivera (Uruguay) and Santana do Livramento (Brazil) form a similar open urban crossing, with residents moving between the two countries on ordinary city streets much as they do in Chuy — a pattern that repeats in a few spots along this border rather than being unique to the one crossing most travel writing focuses on. The same caveat applies here as it does at Chuy: the informal street-level crossing is real and genuinely walkable, but anyone actually continuing their journey rather than just looking across still needs to find the formal border post and get properly stamped in or out.

For most travelers, though, Chuy remains the more relevant of these crossings, simply because it sits at the end of the Rocha coast route this site already covers in depth, making it a natural extension of a trip that's already heading that direction — Rivera and Santana do Livramento sit much further inland, relevant mainly to travelers with a specific reason to be in that part of the interior rather than an add-on to a coastal itinerary.

Getting to these crossings practically

None of the crossings on this page are set up the way the Buenos Aires ferries are, with dedicated tourist-facing terminals and frequent scheduled departures built around visitor traffic. They're functional, everyday border infrastructure, primarily serving local and regional traffic, and reaching them means either driving yourself or taking one of the regional bus services that run along Uruguay's national highways toward the interior and the northern departments.

A rental car is the more flexible way to reach any of the three river bridges specifically, since they sit along routes with less dense bus coverage than the coast or the Montevideo–Colonia corridor. Chuy, by contrast, is reachable by regular intercity bus from Montevideo along the same Rocha coast route this site covers elsewhere, making it the most straightforward of these crossings to reach without a car of your own.

Passport and visa guidance that doesn't expire

Whichever border you're crossing, a few evergreen habits apply regardless of the year you're reading this. Carry your actual passport, not a photo or scan, at every crossing — land borders check documents just as thoroughly as an airport or ferry terminal does, even at a crossing as informal-feeling as Chuy's open street. Confirm the current entry requirements for whichever country you're entering, not just Uruguay's own rules, since Argentina and Brazil set their own visa and entry policy independently, and those requirements shift over time in ways this page can't track for you.

It's also worth building slack into any land-border crossing the way you would for the ferry crossings — processing times at a smaller land border post can be less predictable than at a busy international ferry terminal simply because staffing and volume vary more, particularly at a quieter crossing like Salto Grande or Paysandú-Colón compared to the well-trafficked Chuy post.

For most travelers whose trip is Uruguay and Buenos Aires only, none of this is strictly necessary reading — the ferry crossings covered elsewhere on this site handle that trip perfectly well. This page exists for the smaller but real audience extending further, into Argentina's Mesopotamia region or across into Brazil, for whom these bridges and the Chuy crossing are the actual route rather than a curiosity.

• Chuy/Chuí — an open street border, but formal stamps are required at the dedicated post if you're actually continuing your journey.
• Fray Bentos–Gualeguaychú (Puente Libertador General San Martín) — the southernmost and longest of the three river bridges.
• Paysandú–Colón (Puente General Artigas) — the historic first bridge link between the two countries.
• Salto–Concordia (Salto Grande bridge) — built atop the Salto Grande Dam, operating 24 hours a day.
• Confirm entry requirements for the country you're entering, not just Uruguay's own policy, before any land crossing.