Transport for London (TfL) has completed strengthening work on a flyover in west London.

The £100m refurbishment of the Hammersmith Flyover has fully restored and strengthened the structure.

TfL has been carrying out restoration works on 11 of the flyover's 16 spans after an initial five were strengthened in 2012.

The work was carried out in partnership with principal contractor Costain and various main sub-contractors including Fressinet and SSL.

Features of the work included:

• New tensioning cables - totalling 6.5km in length - installed and fully tensioned, restoring strength within the structure.

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• The entire flyover re-waterproofed and resurfaced with new drainage installed within the structure.

• More than 150 tonnes of steel beams and bars installed inside the flyover to hold the new tensioning system and reinforce the concrete.

• Two five-tonne expansion joints within the carriageway were replaced, allowing the structure to flex as traffic moves across it.

• All 34 bearings supporting the flyover have been replaced, allowing it to adapt to weather conditions and expand in the summer and shrink in the winter by up to 180mm.

The work is part of TfL's wider £4bn Road Modernisation Plan.

Garrett Emmerson, Chief Operating Officer for Surface Transport at TfL, said: "The work carried out on the Hammersmith Flyover in the last two years has been vital to ensure that the structure, a key London road artery, remains safe for many years to come."

(LM)