CrocGuard Bridge & Culvert Barrier
CrocGuard is a revolutionary bridge & culvert barrier spanning up to 16m between abutment posts. Featuring a unique composite design comprising external thrie-beam rails that encases a concrete core, the system transfers impact loads to the posts at each abutment.
CrocGuard applications include weak bridge decks that have insufficient structural capacity to withstand vehicle impact loads from a conventional post and rail barrier or culverts where there is insufficient fill height to support posts or a strip footing.
Product Features
MASH TL4 Compliant
Containment of a 10,000 kg rigid truck travelling at 90 km/h.
Innovative Design
Spanning up to 16 m between abutment posts.
Simple Installation
Supplied as a pre-assembled beam.
Compatibility
Designed for direct connection to the RamShield Transition.
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Monaro Highway CrocGuard
Related Products
RamShield W-Beam has significantly advanced the containment level of guardrail by introducing patented technology into the behaviour of the post during impact.
RamShield Low Deflection combines the sectional strength of C-posts with w-beam guardrail to reduce the clearance required between the barrier and roadside hazard.
The higher mounting position of the thrie-beam guardrail improves the system’s ability to contain and redirect large vehicles.
The RamShield Transition provides a smooth, snag-free connection between steel guardrail barriers and rigid barriers, such as at bridge parapets.
Frequently Asked Questions
How does the CrocGuard work?
Featuring a unique composite design comprising external thrie-beam rails that encases a concrete core, the system transfers impact loads to the posts at each abutment. The stiffness of CrocGuard limits dynamic deflection and minimises damage to the barrier following nuisance impacts.
What are the available lengths of CrocGuard?
CrocGuard is available in modular lengths of 8 m, 10 m, 12 m, 14 m and 16 m.
Can CrocGuard be installed on weak bridge decks?
Yes. CrocGuard may be installed over weak bridge decks including timber deck bridges that have insufficient structural capacity to withstand vehicle impact loads from a conventional post and rail guardrail barrier.
Can CrocGuard be installed over culverts?
Yes. CrocGuard is suitable for culvert applications where there is insufficient fill height to support posts or a strip footing for conventional post and rail guardrail barrier.
What other applications are suitable for the installation of CrocGuard
CrocGuard may be installed at areas where underground services or obstructions prevent the installation of a strip footing for a conventional post and rail guardrail barrier.
Does the installation of CrocGuard affect the hydraulic loading of the structure?
No. CrocGuard effectively eliminates the often-destructive hydraulic load applied to bridges and culverts from conventional post and rail barriers during overtopping from flood waters. The clear space beneath the CrocGuard barrier facilitates overflows, reducing maintenance costs and providing greater surety to the life expectancy of bridges and culverts.
What are the guidelines for aligning CrocGuard with the edge of the bridge or culvert structure?
CrocGuard beams up to and including 14m (between abutment posts) may be installed with the traffic face of the beam aligned with the edge of the bridge or culvert deck. Beams longer than 14m (between abutment posts) must have a minimum 100mm encroachment, measured from the edge of the deck to the traffic face of the beam.
How does CrocGuard connect to the downstream guardrail barrier?
The RamShield Transition provides a smooth, snag-free connection between CrocGuard and steel guardrail barriers. The RamShield Transition gradually increases stiffness of the guardrail system reducing the potential for vehicle pocketing at the CrocGuard abutment post.
How is CrocGuard transported to site?
CrocGuard beams are shipped to site using transport frames as preassembled units. Each CrocGuard beam is fitted with SwiftLift anchor points to facilitate safe handling.
What is the mass of each CrocGuard beam?
Each CrocGuard beam weights approximately 280 kg per metre. Each abutment post weights approximately 150 kg.
