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Client: Dickson Powell—Ref 4051
Location: Floating Harbour, Finzels Reach, Bristol
Length: 91m (5 spans of 7.0m, 24.5m, 24m, 29m & 6.5m)
Width: 4.0m
Form: Bespoke Steel beam bridge—curved in plan and elevation
Project Description
Finzel’s Reach is a new footbridge across Bristol's floating
harbour, which will allow pedestrians and cyclists a route to the
new Finzel’s Reach development in the city. The 91 metre bridge
twists its way gracefully across the Avon waterway linking the
Finzel’s Reach development with Castle Park.
The Client approached CTS directly to create a structural solution
from their architectural aspirations, which gave earlier budget
confidence and identified critical structural constraints at the
outset.
CTS undertook all structural design of the scheme, its value
engineering, manufacture and installation.
We partnered with vibration specialists, Full Scale Dynamics, to
design, manufacture, install and commission a bespoke tuned
mass damper to position in the longest, most eccentric span to
ensure comfort performance parameters were met for walkers,
joggers and crowds alike.
The complex geometry posed challenges for design with regards
to both analysis and concept. The plan curvature generated a low
frequency structure easily excited and onerous access constraints
during road delivery to site and pontoon delivery down the river
under historic arch bridges required the bridge to be assembled in
progressive stages. The structure required a design that could be
assembled from a kit of parts to create a weaving stiff torsion box
spine beam, but also one which could be installed quickly over the
river without extensive scaffolding or plant.
The bridge combined painted steelwork, hardwood decking with
anti-slip inserts (Hi-Grip Excel by CTS Bridges) and handrail with
stainless steel parapet infill; lighting and cladding encompassed
the structure delivering a strikingly prestigious scheme.
For more information on Case Study—91m x 4m bespoke bridge, Finzels Reach, Bristol talk to CTS Bridges
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