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Arcos Bridge and Seca Bridge

Structural Rehabilitation

The Arcos and Seca Bridges are located on the EN 261 road, near Mimosa. During 2008, they underwent extensive repair and reinforcement works.

The reinforced concrete structures showed signs of deterioration due to the corrosion the deterioration of expansion joints and the corrosion of the bearings, and the global seismic resistance of both bridges was unsatisfactory.

As part of the rehabilitation project and monitoring of the A2P, contract work involved repairing deteriorated structures and undertaking seismic retrofitting.

The abutments and the central pier of the Arcos Bridge were reinforced by introducing micropile anchors and applying reinforced structural shotcrete.

New bearings, which allow for large displacements, were installed. The bridge decks were sawn and the expansion joints were adapted to provide for the newly allowed displacements. Lastly, a high-performance cementitious coating was applied in order to protect the structures.

Overall view of Arcos Bridge before the works.
Overall view of Seca Bridge after the works.
Repair of the reinforced concrete structure.
Introduction of micropiles to reinforce the central pier.
Application of coating to exposed concrete.
Cutting of Bridge deck for the installation of new expansion joints.
Application of shotcrete onto the headwall of the abutment at Seca Bridge.
Pre-stressing the anchors on the Abutments, at Seca Bridge.
Installation of micropiles/anchors at Seca Bridge.

Arcos Bridge and Seca Bridge

Structural Rehabilitation

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