Cross-wind bridge

Bridge: Cross-wind bridge
Type: Girder footbridge captures cars speeds underneath to generate electricity
Location: Segunda Circular Highway in Lisbon, Portugal
Wind power: From a network of 2,188 lightweight rotating panels
Designer: Tiago Barros + Jorge Pereira, Ines Valente, Rob Foobe III, Yoon-young hur, Natalie Batile and Joao Paulo Ferrandes
Reference: http://www.designbuzz.com/entry/cross-wind-bridge-captures-cars-speed-underneath-to-generate-electricity/

Solar Wind bridge

Bridge: Solar Wind bridge
Type: Future girder bridge + solar & wind power
Soalr: 20km roadways (11.2 million kWh /year)
Wind: 26 wind turbins (36 million kWh /year )
Power: 15,000 homes
Designer:  Francesco Colarossi, Giovanna Saracino and Luisa Saracino
Reference: http://www.gizmag.com/solar-wind-bridge-concept/17771/