Frednes Bridge
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The Frednes Bridge' or Frednesbrua is a bridge constructed of prestressed concrete with a drawbridge span over the main channel. It is located in Porsgrunn municipality in Telemark county, Norway. The bridge crosses the Porrsgrunn river (in Norwegian Porsgrunnselva) at the mouth were the Skien river (Skiensvassdraget) passes out into Frierfjord. The bridge clearance for vessels at mean water level is 13 meter.