thumb_Main45m long footbridge over River Weaver

Footbridge specialists Intaspan recently installed a footbridge over the River Weaver in Runcorn Cheshire.

The bridge was a simple steel warren truss bridge consisting of 3 No.  15m spans, with associated ramps.

However, what made the project challenging was the severely limited access to the site.  The location of the bridge was along a narrow towpath restricted to vehicles under  7.5 tonnes.

For this reason the bridge was fabricated in component parts with each truss as a separate welded item. The spans were then assembled down river and loaded onto pontoons for transportation to the site, where they were installed using a floating crane.

A concrete deck was cast in situ, supported on permanent GRP formwork, so the whole bridge acts compositely to carry vehicular loading up to 7.5 tonnes.