From Argentina to Uruguay by bus or car
Overnight buses from Buenos Aires to Montevideo and three bridges over the Uruguay River: Fray Bentos, Paysandú and Salto.
Buenos Aires–Montevideo bus
Companies
CAUVI and EGA leave overnight, every day, and arrive in Montevideo in the early morning.
Trip
EGA publishes about 8 hours, in semi-sleeper and full-sleeper seats.
Route
EGA crosses over the Gualeguaychú–Fray Bentos bridge.
- Terminal Tres CrucesBuses across the country and city lines
- Montevideo → Punta del EsteBus timetables
Source: Dirección Nacional de Transporte, November 9, 2026.
Source: EGA, November 9, 2026.
Source: Ministerio de Transporte y Obras Públicas, November 9, 2026.
The three bridges
Gualeguaychú–Fray Bentos
Hours
Open 24 hours.
Control
Integrated Control Area: immigration and customs of both countries.
Buses to Montevideo
CUT and Agencia Central.
Colón–Paysandú
Hours
Open 24 hours.
Control
Integrated Control Area: immigration and customs of both countries.
Buses
COPAY runs from Paysandú to Montevideo and to Punta del Este.
- Paysandú → MontevideoBus timetables
- Paysandú → Punta del EsteBus timetables
- Paysandú terminalToday's departures
Concordia–Salto (Salto Grande Dam)
Hours
Open 24 hours for private cars. For buses, the official Argentine pages give different hours.
Buses to Montevideo
Agencia Central, Núñez and Chadre.
Before crossing by bus, check the current hours. Centro de Frontera Concordia
Customs at the three bridges
To use the allowance, fill in the sworn declaration "Franquicia de Turista" online before crossing.
Source: Ministerio de Seguridad Nacional (Argentina), November 9, 2026.
Source: Ministerio del Interior (Argentina), November 10, 2026.
Source: Comisión Administradora del Río Uruguay, November 9, 2026.
Source: Dirección Nacional de Transporte, November 9, 2026.
Source: Dirección Nacional de Aduanas, November 9, 2026.
Before crossing
Pre-load
Uruguay's immigration office offers an optional data pre-load, from 48 hours up to 2 hours before crossing a bridge. It does not replace the document.
Document
Physical DNI (card or light-blue booklet), the latest issue, or passport. The DNI on your phone is not valid.
Source: Dirección Nacional de Migración, November 10, 2026.
Source: Ministerio de Seguridad Nacional (Argentina), November 9, 2026.
By car
To leave Argentina
License, DNI, cédula verde (or the blue one if you are not the holder), VTV, valid mandatory insurance, fire extinguisher and warning triangles.
In Uruguay
Mercosur cars enter without customs paperwork, with random checks, and can stay as long as the driver: 90 days.
If you are not the owner
Bring the holder's authorization by public deed.
Tolls
The Abono Extranjero covers all the tolls in the country for 15 days and is requested at the toll booths.
Source: Ministerio de Seguridad Nacional (Argentina), November 9, 2026.
Source: Dirección Nacional de Aduanas, November 9, 2026.
Source: Ministerio de Transporte y Obras Públicas, November 10, 2026.
Related
Frequently asked questions
Which bridges are open 24 hours?
Gualeguaychú–Fray Bentos and Colón–Paysandú are open 24 hours. Concordia–Salto is open 24 hours for private cars; for buses, the official Argentine pages give different hours.
How long does the bus from Buenos Aires to Montevideo take?
EGA publishes about 8 hours. The buses leave overnight and arrive in Montevideo in the early morning.
Do I have to declare anything at customs?
To use the allowance at Fray Bentos, Paysandú or Salto, fill in the sworn declaration "Franquicia de Turista" online.
Can I cross with my DNI?
Yes, with the physical DNI (card or light-blue booklet), the latest issue. The DNI on your phone is not valid.
Source: Ministerio de Seguridad Nacional (Argentina), November 9, 2026.
Source: Ministerio del Interior (Argentina), November 10, 2026.
Source: EGA, November 9, 2026.
Source: Dirección Nacional de Transporte, November 9, 2026.
Source: Dirección Nacional de Aduanas, November 9, 2026.
Download the app to see live buses and find how to get to your destination
Didn't find what you were looking for?
Write to us at hola@ahivoy.uy.
Data as of .