A 21st century bridge made of special materials in Vermont, USA, is plastic reinforced and equipped with fiber optic sensors to monitor the traffic on the bridge beyond 80 km. The bridge is unique in that its reinforced bars and grilles are not made of steel but made of glass fiber reinforced polymer(GFRP). This glass fiber reinforced will not be corrosion, and very light, easy to move. This is the main reason why the state chose this material for bridges. Because every winter Vermont will be plagued by snow and salt. The cost of glass fiber reinforced (GFRP) rebar is higher than traditional rebar, but the service life of the bridge is doubled.