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| BR-155 (Brazil) | |
|---|---|
| Country | Brazil |
| Type | BR |
| Route | 155 |
| Length km | 982 |
| Established | 1960s |
| Direction a | North |
| Terminus a | São Luís, Maranhão |
| Direction b | South |
| Terminus b | Belo Horizonte, Minas Gerais |
BR-155 (Brazil)
BR-155 is a federal highway in Brazil that links the northeastern coast with the central-southern interior, traversing diverse states and biomes. The route connects the port city of São Luís, Maranhão with the metropolitan region of Belo Horizonte through corridors that intersect with major roads, railways, and river ports. As an instrument of national integration conceived in the mid-20th century, BR-155 serves strategic transport roles for agribusiness, mining, and regional commerce while also implicating environmental and social dynamics across Maranhão, Piauí, Bahia, and Minas Gerais.
BR-155 begins near São Luís, Maranhão, adjacent to the Baía de São Marcos and the Port of Itaqui, then heads southwest across the coastal plain toward the transitional plateaus of the Northeast Region, Brazil. The highway crosses the Pindaré River and links with federal routes at junctions near Imperatriz, an urban node on the Tocantins River system that interfaces with the Amazon Basin logistics network. Continuing through Tocantins (state) corridors and the cerrado landscape, BR-155 meets major axes such as BR-222 and BR-226 before penetrating the agrarian frontiers near Gurupi and Palmas. Southbound segments traverse the Jequitinhonha River watershed and aggregate with state highways approaching the metropolitan area of Belo Horizonte, where it connects to arterial routes including BR-040 and BR-381, facilitating access to the mining districts of Itabira and Ouro Preto.
Conceived during federal road expansion projects of the 1950s and 1960s, BR-155 was part of national plans coordinated by the Departamento Nacional de Estradas de Rodagem (DNER) and later administered by the Departamento Nacional de Infraestrutura de Transportes (DNIT). Early construction aimed to integrate frontier agricultural settlements promoted by agencies such as the Instituto Nacional de Colonização e Reforma Agrária (INCRA) and to open access to mineral zones exploited by firms like Companhia Vale do Rio Doce (now Vale S.A.). The highway's alignment was influenced by regional capitals—São Luís, Imperatriz, Teresina, and Belo Horizonte—and by the expansion of rail projects associated with companies such as Companhia Paulista de Estradas de Ferro and later private concessionaires. Over decades, BR-155 underwent phased paving, rerouting, and duplication efforts tied to federal investment programs and partnerships with state agencies like the Secretaria de Transportes de Minas Gerais.
Northern terminus: near São Luís, Maranhão by the Avenida Litorânea and connections to the BR-010 corridor leading to the Federal District. Key junctions include intersections with BR-010 toward Belém, BR-222 linking Fortaleza and Teresina, and BR-226 serving interior Piauí. Mid-route nodes: connections at Imperatriz with river port infrastructure and rail spurs to export terminals such as the Port of Itaqui. Southern terminus: integration with the Grande Belo Horizonte network, interfacing with BR-040 to Brasília and BR-381 to Vitória, enabling onward freight movement to export hubs like Port of Vitória and Port of Santos via intermodal transfers.
BR-155 supports regional agribusiness by enabling flows of commodities produced in the cerrado and savanna margins—soy, corn, cattle—linking producers to grain storage terminals and export routes used by corporations including Amaggi and Bunge Brasil. The highway underpins mineral logistics for extraction zones supplying companies such as Vale S.A. and smaller mining cooperatives near Minas Gerais. Urban markets in Imperatriz and Belo Horizonte benefit from improved food supply chains, while local industries—construction firms, transport cooperatives, and logistics operators—expand employment opportunities tied to highway traffic. Socially, BR-155 has catalyzed settlement patterns influenced by agrarian reform initiatives by INCRA and community projects led by organizations like the Movimento dos Trabalhadores Rurais Sem Terra (MST), though this has also produced land conflicts and shifts in traditional livelihoods among indigenous groups recognized by the Fundação Nacional do Índio (FUNAI).
Maintenance responsibility falls primarily to DNIT with state highway agencies participating in resurfacing and signage programs. Pavement quality varies: fully paved stretches near metropolitan zones contrast with seasonal wear and unpaved segments in remote sections, influenced by tropical rainfall regimes and heavy truck volumes from carriers registered with the Agência Nacional de Transportes Terrestres (ANTT). Periodic federal contracts and public tenders engage construction firms such as Odebrecht and Andrade Gutierrez for duplication, bridge replacement, and drainage works, often under scrutiny by the Tribunal de Contas da União (TCU) for fiscal compliance. Emergency repairs employ municipal road departments and regional concessionaires to maintain traffic flow during harvest peaks.
BR-155 traverses sensitive biomes including portions of the Cerrado and riverine systems feeding the Amazon Basin, raising concerns among conservation NGOs like Instituto Socioambiental and WWF-Brasil about deforestation, habitat fragmentation, and biodiversity loss affecting species cataloged by the Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renováveis (IBAMA). Roadkill incidents, erosion, and sedimentation threaten aquatic habitats in the Tocantins and Jequitinhonha basins. Safety issues include high accident rates involving heavy trucks and passenger vehicles, prompting enforcement actions by the Polícia Rodoviária Federal (PRF) and traffic-calming measures coordinated with state police units. Mitigation initiatives involve environmental licensing overseen by state secretariats and restoration projects funded by development banks like the Banco Nacional de Desenvolvimento Econômico e Social (BNDES).