Corrugated aluminium plate culverts have been used around the world for over 60 years and are a proven option for many civil infrastructure applications. Aluminium Dur-A-Span® is manufactured from marine-grade aluminium alloy, 5052-H34, offering a design life of over 75 years in most environmental conditions in New Zealand and are ideally suited for saltwater and aggressive soil applications where rustproof buried arch bridges, culverts or drainage structures are required.
Increasingly, these corrosion-resistant culverts are chosen over their precast concrete drainage pipe counterparts on overall performance and cost. Aluminium has a tough, self-healing oxide surface film that reforms immediately if it is mechanically damaged or corroded in an aggressive environment like saltwater or harsh soils. This makes Aluminium Dur-A-Span® corrosion-resistant buried arch bridges and culverts virtually maintenance-free, with a design service life of over 75 years.
Aluminium Dur-A-Span® buried arch bridges and culverts are usually supplied as open-bottom and are an environmentally friendly solution, promoting fish passage through the bridge construction period and beyond. Box culverts are used primarily when height is limited as they can accept low cover heights. They also offer generous clearance boxes and hydraulic flow properties.
The ease of installation of Aluminium Dur-A-Span® culverts offers very real benefits to specifiers in both normal and difficult situations. The easily handled corrugated plate system can be erected on-site - an ideal solution for remote areas where access is difficult - or delivered to site fully assembled if access and transport regulations allow and where fast job completion is vital. Aluminium Dur-A-Span® culverts derive their strength through interaction of the surrounding backfill.
Note: CSP’s Aluminium Dur-A-Span® is not a stocked item. A lead time for manufacture can be provided following the design and consultation process.
Please contact Steve Silby for more information:
Steve Silby – National Specification Manager
+64 27 327 7985