Contractor Morgan Sindall was forced to delay installation of an 84m long pedestrian and cycle bridge in over the A9 in Inverness, Scotland last weekend after the jacks failed.
Morgan Sindall was in the process of installing the 290t “Golden Bridge” from the A9 when the jacks used to raise the bridge buckled under the weight of the bridge. This then caused the wheels underneath the jacks to sink into the ground as weight was no longer evenly distributed.
Individual axles were lifted from the ground using jacks. Steel plates were then inserted under the wheels allowing them to be driven out of the ground. Ramps were then laid over the ground.
The bridge was secured to the jacks while being raised, so there was little risk to workers on site, according to a Morgan Sindall spokesman.
The A9 in Inverness was closed between the Raigmore Interchange and Sir Walter Scott Drive whilst the bridge was being installed on 6 April. It closed again on 7 April for a second successful attempt.
The bridge was designed by consultant Fairhurst and built as part of Morgan Sindall’s £12M infrastructure contract on phase one of the Inverness Campus development.