Floodway Markers
Impact Resistant FDI, Guideposts, and Hazard Markers For Flood Zones
Delnorth manufactures a complete range of standard and customised marker products to suit floodway and causeway applications.
Using high quality long life materials, our range of guide and marker post solutions clearly define floodways and causeways with high visibility guidance, hazard and flood depth indicator delineation to meet state and territory standards.
Our robust range of high quality floodway and causeway marker post solutions are made in Australia and designed to last, reducing maintenance costs & improving safety for road users.
Floodway Marker SOLUTIONS
Flood Depth Markers
- Aluminium boxed flood depth marker
- Steel flex surface mount depth indicator
- Poly flex flood depth indicators
Flood Hazard Markers
- Steel flex surface mount directional chevron and hazard markers
- Poly flex directional chevron and hazard markers
FLOOD MARKERs
Dura-Post® Tubular Steel Guide Post
Dura-Post® Tubular Steel Guide Posts are manufactured from C250 Pipe 50nb, are hot dipped galvanised and high grade powder coated. TheTubular steel guide posts comply with AS1163, are manufactured to Australian and QLD MRD Specifications, and are approved for use by DTMR as a floodway guidepost.
The unique shape of the durable tubular steel guide post makes it the perfect floodway and causeway guide post solution.
Inline Flexible Aluminium Posts
Inline bollards are made using high strength Aluminium for a more robust marker solution in high impact areas such as flood zones and causeways. They are available as surface mount or socket mount.
Inline Flexible Aluminium Posts are fully customisable in both size and delineation for use across multiple applications and are available in various depths and sizes. Boxed Aluminium Flood Depth Markers are also available in various depths and sizes.
PolyFlex Flood Depth Indicators & Hazard Markers
Steel-Flex® Surface Mount is a durable, impact resistant and low maintenance solution for flood way delineation. Poly-Flex™ significantly reduces repetitive replacements and can withstand impact making it ideal for flood zones to provide continuous hazard and depth indication to enhance road user safety.
Polyflex is a very strong, flexible injection moulded polyurethane base with impact resistant posts and fixtures. It significantly reduces your organisation’s sign replacement and installation costs. Manufactured in Australia, Poly-Flex offers high impact resistance.
Benefits of using Impact resistant, flexible flood markers and guideposts
Continuous visibility and guidance
- Self-recovering designs stay upright and legible after strikes, maintaining lane edge, and depth guidance.
- Better resilience in seasonal events (flooding, storms).
Reduced maintenance and product lifecycle cost
- Fewer post replacements and less call-out time after impacts.
- Lower spend on traffic control, crews, and parts over the asset’s life.
Improved safety outcomes
- Energy-absorbing, passively safe posts reduce vehicle damage and injury risk compared to rigid alternatives.
- Maintained delineation in flood-prone or low-visibility zones reduces the risk of collisions, or road users leaving the road or causeway.
Download our Floodway Marker Flyer
To place an order, or if you would like to find out more, get in touch with our team for more information.
Key Features of Delnorth Impact Resistant Signs
- Impact recovery: Rebounds to original shape after repeated strikes.
- UV and weather resistance: Won’t fade or discolour; corrosion resistant.
- Temperature tolerance: Performs in extreme heat and cold.
- Lightweight and strong: Easier, safer handling for crews.
- Custom options: Standard sizes and shapes, multiple thicknesses, high‑quality graphic and reflective films, anti‑graffiti coatings, rounded safety edges.
Impact Road Signs FAQs
What are the differences between Flexible and Non Flexible Signs?
Flexible vs Non-Flexible Signs
Flexible impact signs
- Recover after strikes; resist cracks, dents, and creases.
- Maintain readability and position in high-impact zones.
- Lighter and safer to handle; rounded/safe edges available.
- Lower lifecycle cost through fewer replacements.
Non-flexible (rigid) signs
- Bend, crease, or shatter on impact.
- More frequent replacements and higher maintenance burden.
- Heavier handling and higher risk of sharp edges.
- Shorter service life in harsh or high-impact locations.
DELNORTH IMPACT RECOVERY POSTS
RPS RETRO POST®
- Made from high grade rubber compound with reinforced steel
- Perfect for high-impact traffic zones, Retro Post® is self-returning, flexible, and available in multiple heights.
- Easy to install into existing or new sockets, the Retro Post® is available as a surface or socket mount installation.
DURA-POST® INLINE BOLLARD
- The Dura-Post® 360° Inline Bollard has a spring reinforced impact resistant polyurethane flexible joint which provides strength and durability, even for galvanised steel or aluminium posts.
- Multidirectional and impact absorbing, the inline bollard is easy to install and has vandal resistant fittings.
- Installation options include surface mount, ground socket or inground drivable anchor.
POLY-FLEX™
- Manufactured from premium grade injection moulded polyurethane the Delnorth Poly-Flex™ range is UV stabilised and thermal resistant from -50° to + 60°.
- Significantly reducing replacement costs, Poly-Flex™ is strong and flexible, absorbs impact and returns to original position time after time making it perfect for high impact areas.
- Poly-Flex™ can be installed with ease and is available as a surface or socket mount.
Benefits
Using Flexible Bollards, Signposts, and Frames will produce significant long term benefits:
Durable
Made from UV-stabilised materials to withstand harsh Australian conditions.
Highly Visible
Fitted with Class 1a reflective film for superior night-time and all-weather visibility.
Impact Resistant
Designed to return to their original position after impact, maintaining consistent roadside delineation and long-term cost savings.
Easy to Install
Compatible with standard guardrail fittings for quick, hassle-free installation.
Available in Multiple Configurations
Choose from joint, paddle, twist, butterfly, and more, in a range of colours and sizes to meet your roadside requirements.
Why Choose Delnorth?
Australian Owned & Operated
Manufactured in Australia Delnorth Proudly supports the local industry with reliable, high-quality products.
Expert Support
Our team is here to help you select the right delineation products for your needs.
Fast Shipping
Shipped Australia-wide and internationally.
10 YEAR GUARANTEE
Delnorth Marker Posts are supported by our Delnorth 3, 5 and 10-year guarantees, Delnorth products significantly reduce maintenance and replacement costs and offer efficient installation options, and product flexibility lowering the risk of injury to installers and road users.