HIGHWAYGUARD.COM
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Revision 1.0
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03/19
© 2019 Highway Care Limited. All Rights Reserved.
Page 17 / 23
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Bridges
Where possible anchoring should take place off bridge decks. Any anchoring on bridge decks
needs to be agreed in advance with the technical expert responsible for the bridge to ensure it is
not damaged. If anchoring either side of a bridge deck expansion joint then this movement must
be mirrored in the barrier by utilising a variable length barrier section.
Wheelsets
These allow barrier sections to be manoeuvred without lifting machinery/equipment such as
installing in tunnels or areas with overhead restrictions.
The wheelsets can be raised and lowered from the top of the barrier using a manual wrench and
24mm socket.
Caution
Impact guns should not be used to operate the wheels.
Pavement
HighwayGuard™ has been tested on asphalt pavement that is 150mm asphalt concrete over a
granular subbase. The LDS system was tested with M24 grade 8.8 resin threaded bar (28mm drill
bit) with 300mm embedment.
Always
ensure the resin manufacturer’s installation/application instructions are adhered to.
HighwayGuard™ LDS system was tested on an asphalt pavement, anchored to the ground with
threaded rod set with a chemical resin, based on trials conducted at the test facility it is
recommended that the resin anchor is able to withstand a pull out force of 95kN.
Alternative ground conditions may be acceptable but might require different anchor solutions.
Maintenance and Repair
HighwayGuard™
is generally a maintenance free barrier. It is recommended that some basic
maintenance is carried out of the system every 10 years, this involves a visual check for signs of
corrosion/damage both outside and inside the barrier.
For wheeled sections ensure that they are raised/lowered and maneuvered around, greasing the
jacking mechanism if required on an annual basis.
Any damage to the galvanised coating should be repaired with zinc rich paint to prolong the life of
the barrier.
Damage after vehicle impact will need to be assessed on a case by case basis by a competent
person, typically low angle impacts will not warrant barrier replacement. Significant impacts will
mean damaged sections will need to be lifted out and replaced.
