Viaduct Casinyola 1

Name and location
Viaduct over the river of Casinyola near the town of Bàscara (Girona, Spain)
High Speed Line Madrid-Zaragoza-Barcelona-French border. Section: Vilademuls – Pontós

Key features
Length: 77m.
Spans: + 20m + 37m +20m
Average height: 12m
Use: High Speed Railway
Materials: Reinforced concrete piers and prestressed concrete deck.
Construction: Falsework supported on the ground.

Railway Infrastructure Administrator, ADIF, Spain.

Years: 2007-2010

BT Intervention
Construction project for the UTE Vilademuls, technical assistance and engineering construction work.

General information
Construction pictures

General information

This Viaduct, number 1, on the stream of Casinyola, of 77m length, is placed in the high-speed railway line Madrid-Zaragoza-Barcelona-French border, between Barcelona and the French border.

The static scheme is the classical in railway bridges:

– The deck is a prestressed concrete continuous box beam, 2.64m constant depth, supported on reinforced concrete piers and abutments.

– Longitudinal fixed point, against horizontal actions, placed on an abutment. The deck is transversally fixed to all piers by means of pot bearings.

It is noteworthy that the viaduct is located in an area of moderate seismic activity, with basic soil acceleration a = 0.09g, this action has being decisive in the design of many elements of the structure.

All foundations must be deep, with piles of 1500 mm diameter, both in piers and abutments.

The deck is constructed in only one phase, on falsework supported directly on the ground, and the concreting of cross section is done in two phases.


Viaduct Casinyola 1 – 1

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Viaduct Casinyola 1 – 2

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Viaduct Casinyola 1 – 3

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Viaduct Casinyola 1 – 4

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Viaduct Casinyola 1 – 5

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Construction pictures