Beza Street Bridge, Leeds

Beza Street Bridge is a three span structure carrying Beza Street over the railway line between Leeds and Castleford.

Visual/detailed examinations of the structure had identified significant areas of defective concrete (cracking/spalling/delamination) to the plinths of the intermediate piers. The principal cause of the concrete defects was identified as excessive chloride contamination due to de-icing salts penetrating through the deck slab joints and then contaminating the concrete plinths.

As a Sika approved company, we were appointed by AMCO Rail to install the specified concrete repair and corrosion inhibitor system to repair the ageing structure with minimal disruption whilst ensuring the highest standards of safety for users of its single lane carriageway and railway line below.

Inline with the detailed specification we carried out the initial repairs by applying a layer of Sika MonoTop-610 to inhibit corrosion and improve the lifespan of steel reinforcements, prior to the application of Sika MonoTop-615 high build repair and re-proofing mortar. With good resistance to water and chloride Penetration, this complete system provides long term protection to the concrete structure.

To manage on-going corrosion, we then embedded Sika Galvanshield Sacrificial Anodes to provide integral long term protection. Utilising a team of skilled applicators, the full application was complete within a four week period – minimising disruption to road users and rail services by working overnight between 10pm and 6am.