Footbridge over national road no. 50 on the ring road of Chynów.
The footbridge was originally designed in 2008, but in 2016 we renewed the design and the construction works began. The bridge is located over three separate roads: a national road, a district road and a local road. Thus it has 3 spans, 21,0+28,0+21,0m =70,0m. The superstructure of the footbridge is a composite one, with two main steel girders and concrete slab. The width (clearance) of the deck derives from its purpose: a separate lane 1.0m wide for disabled people, with rails allowing to move on a wheelchair, and a regular lane 2,25m wide. The total width is 3,95m.
Access to the bridge is via stairs and ramps. The stairs are designed to be 2,25m wide, made of reinforced concrete, with in-situ pillars and beams, but with precast steps.
The ramps are also of reinforced concrete. The slope of the ramps is 8% and 2%. The width of the ramp is 1.0+1.5m, the total length is L=84m
The footbridge has a drainage system and night illumination.
Interesting facts
The outer piers of the footbridge are in the shape of a letter “V”, on one end being the support for the ramp, on the other for the footbridge deck.
The pillars of the ramps are located next to the deck, not under it! The deck of the ramp is supported on cantilevers stretching out from the pillars in opposite directions.
Every second pillar of a ramp has a lantern on top, the rest of the pillars are ended with an inclined surface, resembling a needle.
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