I am only able to verify that this road is four lanes across and that it is open to traffic. I cannot determine which crossings are possible or not because there is a solid line or low barrier dividing the highway throughout this segment and no painted indications for turns. It is conceivable that roads like Suipacha (road) https://www.openstreetmap.org/way/770889526 that you routed from could cross solid painted markings on entering Avenida San Martín (and/or exiting). I just cannot confirm that so I am not comfortable with making those cross connections. Though if you have local knowledge of traffic rules the City of Rosario and surrounding areas, I will defer to your updates in OSM. Good luck!