The new 17-foot Ridge Road bridge in North Fairfield, Ohio, is made entirely of plastic reinforced with fiberglass and has sensors to measure strain and defection. The bridge is expected to last longer than traditional ones, but Douglas Nims, an associate professor of civil engineering at the University of Toledo, noted that the effects of heat, cold, wind and rain tend to destroy smaller bridges. Observers note that they must study the effect of weather on plastic before the material is used for more bridges.

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