The largest road infrastructure project in Navarra

The Pamplona-Logroño Dual Carriageway is the greatest civil works project in road infrastructure in all of Navarra. The road has been contracted for and managed as a shadow toll concession, whose length (70 kilometres) and investment (300 million euro) make it one of Spain's biggest shadow-toll projects ever.

Its function is to join Navarra with the upper Ebro River valley, connecting the cities of Pamplona and Logroño and thus directly benefiting approximately 450,000 people. It calls for 19 junctions and improvements in 16 local roads that permeate and draw together the infrastructure's entire area of influence.

The dual carriageway has got five sections:

The road's design has been conceived in two well-differentiated phases and in five sections:

Section 1: Cizur Mayor/Puente la Reina
Section 2: Puente la Reina Variation
Section 3: Puente la Reina/Estella
Section 4: Estella/Los Arcos
Section 5: Los Arcos/Ebro Corridor

Phase 1: Pamplona to Estella.

There are two landmark points in this section:

• El Perdón Tunnel, a 1,182-metre-long tunnel located in Section 1, goes through the Sierra del Perdón mountain range. It lowers the height of the pass by 80 metres, considerably improving winter driving conditions.
• Bridge over the Arga River at Puente de la Reina, designed by Navarran engineer Javier Manterola. The bridge is 300 metres long and a genuine symbol of the road. It belongs to Section 2. It is a modern bridge whose structure is a combination of concrete and steel, and it links the two banks of the Arga River.

Phase 2: Estella to the Viana junction.

This section provides connections to the towns of Estella, Los Arcos and Viana. At Logroño it hooks up with the entire national infrastructure system.

One of the project's most outstanding points is a special bit of work doubling the number of lanes on a hyperstatic bridge by Javier Manterola.