The main avenue in Chuy, Uruguay, and Chuí, Brazil is the border between the two countries. Also, the avenue is called Uruguay Av. in Brazilian side and Brasil Av. in Uruguayan side.

Border Crossing: Brasil to Uruguay at Chui/Chuy

Chuí, Rio Grande do Sul, and Chuy, Uruguay, are two cities divided

Montevideo – Travel guide at Wikivoyage

Chuí, Rio Grande do Sul, and Chuy, Uruguay, are two cities divided

Barra del Chuy

Chuy – Travel guide at Wikivoyage

Brazil–Uruguay border - Wikipedia

What does the border between Brazil and Uruguay look like? - Quora

What does the border between Brazil and Uruguay look like? - Quora

In cities split between Brazil and Uruguay like Chuí/Chuy and

Montevideo – Travel guide at Wikivoyage

Border Crossing: Brasil to Uruguay at Chui/Chuy

Why did Uruguay leave Brazil? - Quora