The finished bridge stretches 689feet (213 m) and 64 feet (20.7m) wide, Central span is 352 feet (107.3 m), The side spans - 17feet (52.7m) match the span arrangement of the nearby Grosvenor Bridge such that both bridges are easily navigated by riverboats.
The width of the deck is 25m with cantilevered footways extending beyond the suspension cables and their towers.
The jointing of the entire bridge is of riveted steel type.
The budget was less than 365000 GBP which was under the budget of the project cost.
Designed by EJ Buckton and HJ Fereday of Rendel, Palmer & Tritton, London, and the construction was done by Holloway Brothers with the architects George Topham Forrest and E. P. Wheeler replacing the earlier ornate wrought iron suspension span designed by Thomas Page.
The new Chelsea bridge is known for its self-anchored first bridge in the United Kingdom.
The 37 steel cables bundled into a hexagon make it stand as a suspension bridge.
The Steel towers rest on rocker bearings.
The deck hangers are clamped to the cables with bolted fittings.
Most conventional suspension bridges, have two towers, holding suspension cables, with the bridge deck passing below and supported by continuous vertical hanger cables which are like the Chelsea bridge.
The main suspension cables are anchored into foundations that may either consist of ground anchorages, or massive blocks constructed with sufficient weight to restrain the pull of the cables.
This built form can be advantageous in two ways
· The main structural elements are purely in tension, lowering the weight of material rather subjected to compression elements and the attendant risk of buckling.
· span can be stretched to a good length without any temporary supports below the deck, which can minimise both cost and obstacle in between the span of the bridge.
The main role of a self-anchored suspension bridge dispenses with the need for foundations to anchor the main cables by anchoring them instead to the bridge deck.
The construction cost and the required size for foundations and their anchoring are directly related to the load-carrying capacity of the deck can also resist the topography of the land over which the bridge is proposed to be built.
The main towers are riveted steel boxes, tapering towards the top, which is in the form of saddles.
Most suspension bridges require cross-bracing between the tower legs to provide stability, but the span of Chelsea Bridge is short, and the towers aren't tall enough to require this.