ORIGINAL CONCESSION (May 26, 2011). Concession to construct, operate, maintain, conserve and exploit the 79.05 km long Salamanca-Leon toll highway with 4 lanes of 3.5 m wide each, outside lateral shoulders of 2.5 m wide and inside lateral shoulders of 1.0 m wide.
The highway consists of the following highway sections:
- Section I: from the 0+000 km to the 28+634 km;
- Section II: from the 28+634 km to the 49+828 km
- Branch I: the 3.1 km long branch connecting to the interior port from the 34+780 km of Section II to the 160+600 km of the federal highway 45, 12 m wide, 2 traffic lanes of 3.5 m each and lateral shoulders of 2.5 m.
The concession includes the right-of-way, works, constructions and other goods and accessories.

FIRST AMENDMENT (04/08/2024). The concession term is extended to 60 years; financial model rebalancing assumptions are added.

(*) Project with Banobras and/or National Infrastructure Fund (Fonadin) involvement or support.