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CON/SPAN® is a patented modular precast system for total set-in-place construction of bridges, culverts, underground structures and environmentally acceptable alternatives for underground containment.
- Each installation is custom designed and manufactured for your specific site requirements.
- Precast modular units are delivered to your site and set in place by crane.
- Backfilling can begin immediately.
- CON/SPAN® is available from an international network of precast providers.
CON/SPAN®'s fully engineered system stands apart from other products through the strength of its distinctive arch action and extensive technical support.
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How the CON/SPAN® staff works for you
- One call to (800) 526-3999 connects you with your local provider or our design team of experienced professional engineers.
- We support your local CON/SPAN® provider to help owners, consultants and contractors evaluate CON/SPAN® solutions for specific projects.
- We work with your local CON/SPAN® provider to develop project specific information needed for their pricing.
- In conjunction with your local CON/SPAN® provider, we provide comprehensive design support and design aids for automated and manual plan preparation, and assistance through all phases from concept through installation.
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How CON/SPAN® saves you time and money
- The arch shape provides an economy of materials for a lower initial cost.
- Overall savings for a project is significant over cast-in-place.
- Fast installation—usually in hours. Road closings and detours are minimized, resulting in significant reductions in maintenance of traffic costs. A Maine DOT project study estimated a seven-month savings of construction time over cast-in-place construction.
- Eliminates two major bridge problems: costly maintenance of an exposed bridge deck and bridge deck icing.
- Off-site fabrication ensures tight adherence to specs, less on-site work and quality control of modular units.
- Long life cycle, low life cycle costs, virtually no maintenance.
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CON/SPAN®'s arch-box shape rated #1 by state transportation agencies
A survey encompassing data from 45 State Departments of Transportation (DOT) indicated CON/SPAN® was:
- Evaluated by more state DOTs.
- Approved by more state DOTs.
- Used by more state DOTs than any other precast three-sided box culvert on the market.
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Research backs CON/SPAN®'s ongoing development
The extensive research and development that resulted in CON/SPAN® Bridge Systems continues as an important component of the system. Several full-scale load tests, conducted in cooperation with the Ohio, Michigan and Pennsylvania departments of Transportation, verified the analysis procedures and demonstrated the tremendous reserve strength of the system.
- Clear spans from 12 ft to 48 ft.
- The arch-box units can accommodate a wide range of fill heights together with AASHTO or AREMA loading.
- Headwalls are precast with unit or separately.
- Footings may be precast or cast in place. Units may also be set on a slab bottom, pedestal walls or pile caps.
- Strip footings preserve natural stream bottom and allow water percolation in retention vaults.
- Wingwalls, designed for your site, are furnished in one piece, are self-supporting, and can be backfilled immediately.
- Separate or integral closed ends are used for underground containment vaults.
- Variable modular configurations allow for practically unlimited lengths, widths and vertical clearances.
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