Turnpike Authority Turnpike Authority Chooses Fibrelite Corrosion Resistant Composite Manhole Covers for Highway Expansion Project Now Allowing Easy and Safe Access Turnpike Authority Chooses Fibrelite This is a multi-year project and several hundred manholes will be installed during the widening of the turnpike and related construction. Fibrelite's lightweight FRP manhole covers were identified by an engineering consultant working for this particular Turnpike Authority. The requirement was for a 40" diameter composite manhole cover that could be used for roadway lighting pole manholes (these manholes contain the electrical wiring used to power the 40" high light poles). Roadway lighting pole manholes are installed next to the highway and are therefore exposed to the corrosive salt app

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