Investigation into Tullamarine Freeway signage
22 February 2019
Safety of
road users is our top priority and
engineers have been working to identify and rectify what caused a sign
to fall on the
Tullamarine Freeway in January.
We took immediate steps to conduct an audit of all road signs installed
as part of the
CityLink Tulla Widening Project of similar size and
structure to that which fell on the Tullamarine Freeway and can confirm
there are no signs of deterioration or stress.
Our preliminary findings into the cause of the fallen sign have found
‘stiffener plates’ inside the gantry that provide additional support for
the sign had not been installed according to the approved design.
These stiffener plates were required for two other signs which have also
been removed as a precaution. Stiffener plates were not required to
support any of the other similar signs installed as part of the CityLink
Tulla Widening Project.
We will continue working with the builder CPB Contractors to complete the investigation and confirm our preliminary findings.
In addition to work to re-engineer
and verify the signage designs and design calculations, further
materials testing is occurring on the gantry where the sign fell. This
is being removed to facilitate this work. A new gantry will be
fabricated to replace it.
We are committed to completing a robust and rigorous investigation and
once we have the full findings, the removed signage will be safely
reinstalled and supported.
--ENDS--
Source: Transurban - www.transurban.com
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