R.L. McCoy, Inc., a highway and bridge construction company based in the Fort Wayne, Indiana area, was contracted to build a 330' long access tunnel with 18" thick walls and an 18" slab overhead. Because the 14' high and 16' wide inside dimensions were larger than conventional box culverts, Mark McCoy was concerned with properly supporting the center of the overhead forms during construction.

The contractor contacted Symons for suggestions on forming and support systems, and a meeting to discuss the details of the project with a Steel Form Specialist was arranged. 

One option was the Box Culvert Traveller system with the Max-A-Form® concrete forming system for the interior and exterior wall surfaces and a custom header to eliminate a center slab support. Although this plan had several advantages, the price of the custom components made it unattractive.

Finally, a plan to use the Box Culvert Traveler components with the Versiform® panels that the contractor already owned for the interior, Max-A-Form panels on the exterior and Steel-Ply® panels as headers supported by a center Post Shore was approved.
John Christiansen arrived on the job site to provide the R.L. McCoy crew with instructions on assembling the 42' traveling sections. Once the system was put together, the forms were cycled every 4 days and the job was successfully completed in five weeks.

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