It is a two-lane per direction road from Caguas to its border point to Cidra and rural all the way to Comerío.

One side of the road is extremely close to the blasted mountain (See Blasting), meaning that landslides would fall in the right lane of the direction close to it; the other side is near a precipice, with barriers that are not safe.

Several people have died on this highway, including cars which have been hit by heavy-weight trucks coming down the hill, with brakes that malfunction or in the case of not having enough time to stop.

There is one emergency ramp which was built to provide safety for the lane going down the mountain.

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