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Our Tri-Span three-sided box culverts are a highly effective and environmentally conscious solution for managing water flow in applications that involve streams, creeks, or other narrow waterways. These precast culverts are designed to meet the unique challenges of watercourse crossings, providing an efficient, cost-effective alternative to traditional full bridge construction. With their innovative geometry and environmental benefits, Tri-Span culverts offer enhanced performance, faster installation, and long-term durability, making them an ideal choice for a wide range of infrastructure projects.
Key Features and Benefits of Tri-Span Culverts
One of the most significant advantages of the Tri-Span culvert design is the absence of a bottom slab. This design feature is specifically intended to minimize the impact on the streambed, preserving the natural flow and structure of the waterway beneath.
- Environmental Protection: By not disturbing the streambed, the Tri-Span culvert helps maintain the aquatic habitat, which is crucial for preserving local wildlife, such as fish and other aquatic organisms.
- Eco-Friendly: In addition to its protective design, Tri-Span culverts are built with sustainability in mind, offering a solution that aligns with environmental conservation goals while still meeting engineering requirements. This makes them an ideal choice for projects in environmentally sensitive areas.
BENEFITS
- Not as dependent on the pipe-soil interaction for its structural strength, therefore is not as installation sensitive as other culvert materials.
- 3 different installation options offered including precast wingwalls, precast headwalls and precast footings.
- Environmentally friendly- protects animal habitats.
- Cost-effective solution to full bridge construction
Flat Top Design – Ideal for Low Cover Applications
The flat top design of Tri-Span culverts is another key feature that sets them apart from traditional culvert solutions. This design is particularly well-suited for low cover applications, where the depth of the road structure is limited or where there are constraints in vertical clearance.
- Low Profile: The flat top configuration allows for a shallower installation, making it perfect for projects where the overhead clearance needs to be minimized, such as in urban environments or areas with limited vertical space for roadways.
- Adaptability: Tri-Span’s flat top geometry allows for easy integration into existing infrastructure, making it a flexible solution for projects with various site constraints. The precast units can be adapted to curved or skewed alignments, with varying radii or skews, enabling them to complement the natural flow of waterways or terrain. This feature makes the system an excellent choice for projects where straight-line construction is not feasible or aesthetically desirable.
Cost-Effective Alternative to Full Bridge Construction
Tri-Span box culverts provide a cost-effective alternative to traditional full bridge construction, especially in projects where a large, elevated structure is not necessary.
- Reduced Costs: Full bridge constructions often come with higher material, labor, and maintenance costs, as well as longer construction timelines. In contrast, Tri-Span culverts are more affordable and quicker to install, making them an excellent choice for crossing narrow streams and waterways without the complexity of bridge construction.
- Time-Efficient Installation: As precast components, Tri-Span culverts are fabricated off-site, which means they are ready for installation when they arrive at the project location. This significantly speeds up the construction process, reducing the time needed for on-site assembly and allowing for quicker project completion.
Multiple Standard Sizes and Customization
Concast offers a range of standard sizes for Tri-Span culverts, up to 18m in clear span, providing flexibility to accommodate various horizontal and vertical design requirements. These sizes are designed to provide optimal flow and structural integrity while meeting the needs of different projects. Beyond the standard sizes, Concast can also provide custom designs for Tri-Span culverts, enabling the product to meet the unique specifications of more complex or challenging projects.
Rigid Frame Design with Hinged Supports
The rigid frame design of the Tri-Span culvert ensures that the structure remains stable and durable under the weight of traffic and environmental stresses.
- Minimized Lateral Restraints: The rigid frame design, combined with hinged supports, helps minimize lateral restraints and reduces the induced moments that can impact the structure.
- Enhanced Structural Integrity: The hinged support system also helps distribute loads evenly across the culvert, preventing deformation or damage to the structure.
Speedy Installation and Long-Term Durability
As precast concrete units, Tri-Span culverts benefit from faster installation times compared to traditional cast-in-place solutions. The precast nature of these culverts allows them to be produced off-site and delivered to the installation location, ready for immediate assembly.
- Quick Assembly: Precast Tri-Span culverts can be set into place quickly, reducing the overall construction timeline and minimizing disruption to the surrounding area.
- Long-Lasting Performance: Made from high-quality precast concrete, Tri-Span culverts are built to last.
We can also supply precast footings for your Tri-Span project, to ensure stability and longevity. Contact Concast today to learn how Tri-Span can benefit your next infrastructure project.
APPLICATIONS
Small bridge construction and replacement
Roadway, railway and airport underpasses/overpasses
Stream enclosures
Pedestrian walkways
