July/August 2024 - 100

Completed bridge
The Rhine Bridge
Fussach-Hard
The existing 255 m (830 ft) long Rhine
Bridge connecting the Austrian towns of
Fussach and Hard is the last Rhine
crossing before reaching Lake Constance.
It was built in 1971 and its
substructure is founded on wooden
piles. The bridge is no longer able to
ensure the primary framework conditions
for flood protection according to
the RHESI project. In addition, the
standard cross section of the supporting
structure no longer
meets today's traffic
engineering requirements
and
t h e r e f o r e t h e
bridge needed to
be replaced by a
new structure. The
new Rhine Bridge
Fussach-Hard - a
state-of-the-art
steel composite bridge with a separated
cable (rope) construction - was designed
to meet the new requirements
for flood protection as well as to satisfy
the increasing volume of traffic. With
an estimated investment of €70 million
($64 million), the construction of the
new bridge began in June 2020, and it
was opened to traffic in November 2022.
The new bridge was built to the south of
the existing one, which remained fully
operational during the construction
time and has since been demolished.
12,000 metric tons (13,200 T), the new
bridge has three piers, two of which
support the masts that carry the cable
structure. The structure (four-span
girder) has span lengths of 50 m, 125 m,
50 m and 31.6 m (164 ft, 410 ft, 164 ft and
104 ft), resulting in a total length of
256.6 m (842 ft). Two traffic lanes (one in
each direction), one exclusive bus lane,
a sidewalk and a bicycle path fit in the
approximately 24.4 m (80 ft) wide
bridge. The 12 m (39 ft) tall steel box
masts with the corresponding shallow
inclination of the cables allowed the
designers to optimize the overall stiffness
of the main span (between the
river piers).
Subsoil Conditions
The subsoil conditions in the project
area are characterized by the presence of
loose to medium dense floodplain sands
with rather favorable mechanical
With a self-weight of approximately
Longitudinal subsoil profile of the bridge's Hard side
Longitudinal subsoil profile of the bridge's Fussach side
100 * DEEP FOUNDATIONS * JULY/AUG 2024

July/August 2024

Table of Contents for the Digital Edition of July/August 2024

TOC
July/August 2024 - Intro
July/August 2024 - 1
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July/August 2024 - TOC
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https://www.nxtbook.com/dfi/DEEP-FOUNDATIONS/november-december-2024
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