White Horse Bridge
The White Horse Bridge is a footbridge that crosses the tracks at Wembley Stadium railway station leading up to Wembley Stadium in Wembley Park, England. It was designed by Steve Chilton for architects Marks Barfield and engineered by Halcrow. It replaced an old concrete footbridge which was probably built for the British Empire Exhibition. The project also included the construction of a public square.

The White Horse Bridge is a footbridge that crosses the tracks at Wembley Stadium railway station leading up to Wembley Stadium in Wembley Park, England. It was designed by Steve Chilton for architects Marks Barfield and engineered by Halcrow. It replaced an old concrete footbridge which was probably built for the British Empire Exhibition. The project also included the construction of a public square.
Check the official site before travelling; hours and prices can change.
More bridges

Tower Bridge
The bridge people mean when they say London Bridge. Walk the high-level walkway for the glass floor.

Millennium Bridge
Foot-only suspension bridge from St Paul's to Tate Modern — the only crossing aligned on St Paul's dome.

Hammersmith Bridge
Currently pedestrian-only, Victorian wrought-iron beauty — best photographed at golden hour.
Source: wiki-list