Santa Catarina builds escape areas in Serra Dona Francisca with 80% completion and delivery expected by June 2026, including rock blasting on Thursday (30) at km 15, a section where the ramp advances into the mountain to function as an emergency brake for runaway trucks on the mountain.
Santa Catarina is literally blasting rocks inside a mountain to create structures that can save lives in Serra Dona Francisca. The works on the two escape areas in the mountain have already reached 80% completion and are on schedule, with a new detonation scheduled for Thursday (30) at the km 15 section, where the intervention is considered the most challenging of the entire project because the structure needs to advance into the mountain instead of running parallel to the highway. Escape areas function as an emergency brake for trucks that lose control on steep descents, using special material that slows down vehicles and prevents them from becoming projectiles towards other drivers and the population.
The forecast is that Santa Catarina will deliver the two structures by June 2026. The first rock blasting in the mountain happened in October 2025, and since then, the teams have been working at a pace that combines deep drilling, controlled explosions, and structural reinforcements on the slope to ensure that the open space inside the mountain can withstand the impact of heavy vehicles at high speed without compromising the stability of the surrounding terrain. After this week’s detonation, work will advance to paving the site, a stage considered one of the final phases of the intervention that will transform one of the most dangerous sections of the state into a safer passage for those traveling through the region.
Why Santa Catarina needs escape areas in Serra Dona Francisca
Serra Dona Francisca is one of the most feared highways by truckers in Santa Catarina. The section combines prolonged descents with sharp curves that require continuous use of brakes, and heavy vehicles descending loaded for consecutive kilometers run a real risk of brake system overheating, a condition that can result in total loss of truck control on a road where, until now, there was no emergency stop option. Accidents involving runaway trucks on the mountain have already caused deaths, destruction of smaller vehicles, and interdictions that paralyzed traffic for hours.
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Escape areas solve this problem with engineering. The structure consists of a lateral ramp filled with special granular material, usually crushed stone or gravel of specific granulometry, which offers increasing resistance to the vehicle entering it, progressively decelerating the truck until a complete stop without the need for mechanical brakes. A driver who realizes they have lost control directs the vehicle to the ramp instead of trying to brake on a descent where physics is against them, a decision that can be the difference between a controlled incident and a tragedy.
What makes the km 15 work the most complex in Santa Catarina
The km 15 escape area presents a challenge that the km 17 one does not face. While the km 17 structure is positioned parallel to the highway and can be built on already available land next to the road, the km 15 one needs to advance into the mountain, which means opening space within the rock to create the deceleration ramp. This configuration requires construction techniques that go beyond conventional earthmoving: teams need to drill deep into the mountain, insert explosives at calculated points, and detonate them in a controlled manner to fragment the rock without causing landslides in adjacent areas.
Structural reinforcements on the slope are a critical part of the process. Each explosion alters the balance of forces within the mountain, and the engineers responsible for the work in Santa Catarina need to ensure that the remaining walls can withstand both the weight of the terrain above and the future impact of trucks entering the escape area at speeds that can exceed 80 km/h. The pace of work at km 15 is naturally slower than at km 17 due to this complexity, but the delivery schedule by June remains viable according to the latest updates.
How rock blasting works in Santa Catarina’s project
The controlled blasting process follows a rigorous protocol that prioritizes the safety of both workers and the stability of the mountain. Teams first perform deep drilling into the rock at points calculated by engineers, then insert explosive charges sized to fragment the necessary volume without affecting areas beyond the planned perimeter, and finally detonates in a sequence that directs the explosion’s energy into the mountain rather than sideways. The fragmented material is removed by heavy machinery and transported off-site, progressively opening the space where the escape ramp will be paved.
The detonation scheduled for Thursday (30) is pointed out as one of the last necessary in the km 15 stretch. After this phase, Santa Catarina moves on to the paving of the escape ramp, a stage that involves the application of special granular material that will form the deceleration surface and the installation of signage that will guide drivers on how to use the structure in an emergency. The fact that 80% of the work is already completed indicates that most of the heavy work of excavation and structuring has been done, and what remains are finishes that, although essential, do not involve the same degree of risk and complexity as the detonations.
What changes for those traveling through the mountains when Santa Catarina delivers the escape ramps
The delivery of the two escape ramps will transform Serra Dona Francisca from a stretch where runaway trucks are an unsolved threat into a highway that offers an emergency exit designed to prevent the worst. Drivers of heavy vehicles descending the mountain loaded will for the first time have the option to direct the truck to a ramp that will stop it safely, and drivers of smaller vehicles traveling on the same road will have the peace of mind knowing that there is a structure capable of removing a truck without brakes from the road before it causes a collision. The presence of the escape ramps, achieved by blasting rocks inside the mountain, should also reduce the time the highway is closed after incidents, because runaway vehicles will be contained on the ramps instead of spreading across the road.
For Santa Catarina, the project represents an investment in safety infrastructure that aligns with the region’s economic vocation. Serra Dona Francisca is a route used by trucks transporting industrial production from northern Santa Catarina, and every accident that closes the road generates logistical damage that adds to the human cost. Escape ramps are an internationally tested and functional engineering solution: countries with mountainous geography have adopted similar structures for decades, and the arrival of this resource in Santa Catarina is an advance that should have happened sooner, but which, when delivered in June, will fulfill a function that no other measure can replace.
And you, have you ever been through Serra Dona Francisca? Did you know they were blasting rocks to build escape ramps? Leave your opinion in the comments.

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