Pedestrian Bridge on the River Liffey

  • 2009—2011
  • Chapelizod, Dublin 20, Ireland
  • Client: Dublin City Council

This bridge will link the Phoenix Park to the south side of the River Liffey, providing a shorter route to the park for the village of Chapelizod and its hinterland, and creating new walking and cycling circuits from Dublin City Centre.

The bridge is a steel beam with a span width of 40m. To achieve the head height clearance at mid-span and provide easy access from the existing pathway, a double curved sickle-shaped hollow section orthotropic plate serves as the bridge deck. The compression zone of the bridge beam is extended above the bridge deck to form a partial trough section. The thick plates of the extended compression zone are stiffened by transverse ribs; the final crafted form is reminiscent of the dynamically fluid skiffs using the river below. The bridge is lit by a continuous strip of LED lights incorporated into the handrail. It is to be pre-fabricated as a single piece off-site. This commission is the result of a successful competition entry: the original scope of the works have been extended to include the adjacent landscaping and a ramp and stair access to the park above.

  • © Google
  • © Google

© Google

Elevation, Section and Plan
Elevation, Section and Plan
From Top – Railing, Bridge Deck, Double-Curved Steel Beam
From Top – Railing, Bridge Deck, Double-Curved Steel Beam
From Top – Axial Forces, Shear Forces, Bending Moments
From Top – Axial Forces, Shear Forces, Bending Moments
Model
Model

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