Stokely Rail Bridge Pier Strengthening

The Public Transport Authority (PTA) Network and Infrastructure (N&I) Civil Branch is responsible for managing and maintaining all civil infrastructure on the network to support the safe and reliable operation of train services. The branch has an ongoing requirement for general works for civil maintenance, construction, and minor capital/operational projects, which include both new works and ongoing maintenance/repair work. Stokely over Canning Rail Bridge (A018.057/SC/RAB) located at Chainage 18.067 km on the Armadale line and constructed circa 1985 is part of the Armadale train line owned and operated by the PTA. The bridge comprises the following characteristics. Five span structure (18.3 m spans)4 sets of bridge piersSteel girders supported by concrete piers founded by pile cap and piles. A series of engineering assessments have been conducted to investigate the load capacity of the rail bridge. The piers strengthening work have been identified to satisfy with the 200LA rail design load requirement as per PTA Narrow gauge code of practice requirement. A further engineering assessment of the piers was carried out in 2023. It was determined a concrete collar is required to be installed at each pier as part of strengthening works. The Scope of Services for this brief includes the bridge pier strengthening with the method of concrete collar with chemical anchored starter bars to the 4 piers (2 No. columns per Pier) totalling 8 No. Concrete Pier Column strengthening. The scope also includes minor bridge repairs to be completed in synergy with the strengthening works.