Malla 431B lies in the northwest of the Province of Santiago del Estero, running from southeast to northwest through the south of the Province of Salta and the northeastern tip of the Province of Tucuman.

The Malla covers a stretch of Route 34 from km 856.74 (Garmendia, in the Province of Santiago del Estero) until km 964.46 at the intersection with Route 9 at Rosario de la Frontera in Salta. Work involves repaving the existing road surface, repairing the structure with superficial patches, as well as performing deeper repairs, fissure sealing and recycling. Subsequently, work will be carried out to lay the hot asphalt reinforcement layer and rebuild the verges.

This will be complemented with other tasks such as installing vertical signage, reinforcing the berms and bridge balustrades, installing galvanized metal defense rails, and repairing ditches and drainage, among others.

Routine maintenance work has been planned in order to keep the road, shoulders and verges making up the section in good working condition.

SURFACE PATCHING: 4.817 tn
BUILDING EMBANKMENT: 46.898 m3
LAYER WITH MIX TYPE C°A°: 991,379
REBUILDING VERGES: 56.934 m3
ASPHALT SPRAY: 1.347.727 m2
DEEP LAYER REPAIRS: 9.598 m3
RECYCLING: 154.400 m2
MILLING: 221.336 m2
STABILIZED GRANULAR BASE: 25.080 m3

ROUTINE MAINTENANCE WORK: 

Shaping and replacing verges and embankments
Ditch cleaning and shaping
Repairing potholes
Sealing fissures in the road surface
Cutting grass and weeds, tree pruning
Removal, replacement and repair of vertical signage
Cleaning and reconditioning road sides
Landscaping and conservation