Ekki Hardwood Timber: The Ultimate Choice for Long-life Timber Bridge Decking and Parapets.

When it comes to building durable, sustainable, and weather-resistant bridge decks, few materials can rival Ekki hardwood timber. Sourced primarily from West Africa, Ekki (Lophira alata) is renowned for its extreme strength, longevity, and natural resistance to environmental stressors. At Bison Bridges, we understand the importance of using the best materials for infrastructure, which is why Ekki remains a top choice for long-life timber decked bridges.

Why Choose Ekki Hardwood?

Ekki is often referred to as “ironwood” due to its exceptional density and durability. Here are some of the key benefits that make it the perfect material for bridge decking

1. Exceptional Strength and Longevity

Ekki is one of the hardest and densest timbers available, making it ideal for high-load applications such as bridge decking and substructures. It boasts a density of approximately 1,200 kg/m³, a strength class of D7, and durability class 1, meaning it can withstand immense pressure and loads without compromising structural integrity.

2. Naturally Resistant to Decay and Insects

Unlike many other hardwoods, Ekki contains natural oils and tannins that make it highly resistant to decay, rot, and insect infestations. This makes it an excellent alternative to chemically treated wood, offering longevity with minimal maintenance.

3. Outstanding Water Resistance

Bridges and other outdoor structures are constantly exposed to moisture, rain, and even full submersion in water. Ekki’s exceptional water resistance makes it an ideal choice for marine environments, river crossings, and wetlands where other woods may quickly degrade.

4. Sustainability and Environmental Responsibility

At Bison Bridges, we prioritise sustainability. Ekki hardwood is sourced from responsibly managed forests with strict adherence to FSC (Forest Stewardship Council) and PEFC (Programme for the Endorsement of Forest Certification) and UKTR standards. Using sustainably harvested Ekki ensures minimal impact on natural ecosystems while supporting long-lasting, eco-friendly infrastructure.

5. Low Maintenance and Long-Lasting

Due to its high density and natural resistance properties, Ekki timber requires very little maintenance. With a lifespan of 50+ years, it significantly reduces long-term maintenance costs, making it a cost-effective choice for bridge construction.

Common Applications in Bridge Construction

Ekki is used in various bridge components, including:

• Decking – Slip-resistant and weatherproof, perfect for pedestrian, cycle and bridle way bridges.
• Handrails & Parapets – Aesthetically pleasing and naturally durable.

Ekki vs. Other Hardwoods

Compared to alternatives like Oak, Greenheart, or Balau, Ekki stands out due to its superior strength, longevity, and water resistance. While some hardwoods require additional treatments or coatings to withstand outdoor conditions, Ekki performs exceptionally well in its natural state.

Final Thoughts

For any bridge project demanding a combination of strength, longevity, and sustainability, Ekki hardwood is the ultimate material of choice. At Bison Bridges, we specialise in sourcing and using high-quality Ekki timber to create robust, eco-friendly, and long-lasting bridge structures. Whether you’re planning a pedestrian bridge, a cycle bridge or a bridleway, Ekki timber ensures superior performance for decades to come.

Interested in using Ekki hardwood for your next bridge project? Get in touch with Bison Bridges today to discuss your requirements and discover how our expert craftsmanship can bring your vision to life!