The £100M project to strengthen and restore the iconic Hammersmith Flyover in west London is now complete, Transport for London (TfL) has announced.
TFL said that the two-year project now meant that the 1960s structure was safe to use for decades to come and would require less regular maintenance work meaning less congestion and traffic delays in the future.
The restoration work, carried out by TfL, main contractor Costain and sub-contractors including Freyssinet and SSL, covered strengthening of 11 of the flyover’s 16 spans after an initial five were strengthened in 2012.
Work on the structure was primarily carried out overnight to reduce disruption to road users and residents and formed a key part of TfL’s continuing £4bn Road Modernisation Plan.
AA president Edmund King said: “TfL engineers working night and day on the Hammersmith flyover has now paid off.
“When the flyover was found to be unsafe just before the Olympics it was a nightmare. Since then we have had a refurbishment scheme that has been highly innovative and which has always sought to reduce the impact of the inevitable repair works on traffic on this vital strategic route.
Also included in the work was:
- New tensioning cables – totalling 6.5km in length – installed and fully tensioned, restoring strength within the structure
- Entire flyover re-waterproofed and resurfaced with new drainage installed within the structure
- More than 150t of steel beams and bars installed inside the flyover to hold the new tensioning system and reinforce the concrete
- Two 5t expansion joints within the carriageway were replaced, allowing the structure to flex as traffic moves across it
- All 34 bearings supporting the flyover replaced, allowing it to adapt to weather conditions and expand in the summer and shrink in the winter 80mm.
Plans are also underway to install a new Santander Cycles docking station underneath the flyover, providing space for more than 50 bikes. Subject to planning permission, the docking station could be in place by early 2016.
TfL is now working to clear the work site around the flyover, with all local roads returning to normal by late autumn.