Seri Wawasan Bridge, Cable-stayed bridge in Putrajaya, Malaysia

Seri Wawasan Bridge is a cable-stayed box-girder bridge in Putrajaya with a 96-metre inverted-Y pylon inclined forward at 75 degrees. Its 165-metre main span is held by 30 pairs of white stay cables fanning from the pylon to the deck edges, while 21 pairs of backstays and steel tie-backs anchor the pylon behind. The deck carries dual three-lane carriageways, a 4-metre median and a 5.1-metre walkway-cum-cycle track, 37.2 metres wide in total.

The Seri Wawasan Bridge, also called Bridge No. 9, was built as part of Putrajaya, the Malaysian federal territory and administrative centre established in 2001. It crosses Putrajaya Lake, an artificial lake created to provide natural cooling, linking Precinct 2 on the Core Island, where the main government buildings stand, to the residential areas of Precincts 8 and 9. The sources consulted do not give an opening date.

The pylon's forward-inclined, inverted-Y form gives the bridge the profile of a sailing ship, a shape accented at night by changeable colour lighting. The bridge is also called Bridge No. 9, and it crosses Putrajaya Lake, the artificial lake built to cool the city, linking Precinct 2 on the Core Island with Precincts 8 and 9.

The deck carries dual three-lane carriageways, each 18.6 m wide, with a 4 m median and a 5.1 m walkway and cycle track, giving 37.2 m total width at midspan. The inclined pylon and backstays are anchored into bore piled foundations set off the roadway in Precinct 8. Cross on foot or by bicycle using the shared path beside the traffic lanes.

The backstays cross over one another: the cable anchored highest on the pylon meets the deck anchorage nearest the pylon, and vice versa, forming a crisscross pattern visible from the side. The inclined pylon and backstays are anchored in bored piles set off the roadway in Precinct 8.