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Brown County hears pitch for inflatable "balloon" bridge technology and discusses pilot of up to 10 spans
Summary
County commissioners heard a presentation from a Dutch company about an inflatable-form concrete arch method the company says can cut material and construction costs, and discussed an initial site visit and engineer review for a pilot of up to 10 bridges.
County commissioners on April 27 heard a detailed presentation about an alternative bridge construction method that uses an inflatable form—described by the presenters as a balloon—to cast thin, monolithic concrete arched bridge shells. The company representatives said the technology reduces steel needs, shortens construction time and could be cheaper than conventional steel-girder bridges on short and medium spans.
A county consultant introduced the idea as a potential tool for rapidly replacing aging local bridges. One presenter said the method generates a 4–5 inch-thick concrete arch using an inflatable form that holds the shape while…
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