A remote stretch of rainforest in Brazil’s northern Amazon now shows clear signs of organized criminal control, according to fresh research on the BR-319 highway corridor. The 339-kilometer middle section of the road, long left in poor condition, has become a focal point for illegal activities that accelerate forest loss. Brazil’s recent decisions to resume maintenance and consider further upgrades have coincided with this shift ([1]).
A Road Through Intact Forest
The BR-319 was constructed in the 1970s under Brazil’s military government to link Manaus and Porto Velho. It later fell into disrepair after 1998, leaving much of its central portion nearly impassable during the rainy season. Despite these challenges, the route still cuts through one of the largest remaining blocks of continuous Amazon forest.
Travelers and locals have long navigated its muddy stretches with difficulty. The highway’s isolation once helped protect surrounding ecosystems from large-scale intrusion. That protective effect has weakened in recent years as economic pressures and policy changes altered the landscape.
Deforestation Accelerates After 2015
Maintenance work authorized in 2015 under then-president Dilma Rousseff marked a turning point. Deforestation rates in the area rose sharply afterward, according to the study. Successor Jair Bolsonaro’s pledge to fully pave the road further fueled land speculation and the clearing of forest for pasture.
Researchers tracked these changes through satellite data and on-the-ground observations. The pattern shows repeated cycles of forest removal followed by conversion to cattle ranching. Such land use often serves as a cover for other illicit operations in the region.
Organized Groups Move In
Criminal networks tied to illegal logging, gold mining, land grabbing, and cattle ranching now control significant portions of land along the highway. São Paulo University researcher Lucas Ferrante, the study’s lead author, noted that weak government oversight created ideal conditions for these groups to operate. Drug trafficking and environmental crimes frequently share the same routes and money flows, he explained.
“This region is becoming a hub of large farms controlled by organized crime,” Ferrante, linked to the Center for Research on Biodiversity and Climate Change, stated in an interview. Cattle operations in particular appear to function as a way to legitimize proceeds from other crimes. The study highlights how these activities reinforce one another rather than occurring in isolation.
The findings point to a broader pattern where infrastructure improvements, even modest ones, can open remote areas to rapid exploitation when enforcement remains limited. Ferrante and colleagues emphasize that the current trajectory risks turning a once-pristine corridor into a fragmented zone dominated by criminal interests.
What Comes Next
Brazil continues to advance plans for the highway despite the documented risks. Officials have not detailed new measures to strengthen monitoring or curb the criminal foothold already established. The study serves as a warning that further paving or maintenance could intensify the pressures already visible on the ground.
Preserving the remaining forest will require coordinated action beyond roadwork alone. Without stronger oversight, the BR-319 corridor may continue to illustrate how a single infrastructure project can reshape an entire ecosystem in unexpected and damaging ways.
