Hessle Road Flyover

Mason Clark Associates were commissioned by Hull City Council to undertake a review of the previous assessment and proposed strengthening scheme for Hessle Road Flyover and progress a scheme ready for a tender submission. The mutli-span bridge structure carries Hessle Road over the Hull to Cottingham railway line and is a main artery into and out of the city as well as being a diversion route when the A63 is closed. Previous schemes had addressed strength issues on the approach spans with only the two spans over the railway remaining.

Mason Clark Associates proposed an alternative strengthening scheme to that originally suggested which eliminated the requirement for any work beneath the bridge. This eliminated the expense and time restraints of working under Network Rail possessions and allowed works to be undertaken during the day. The proposed scheme, for which we were able to obtain full Network Rail approval, involved the removal of the existing surfacing and strengthening of the existing concrete deck using a new composite slab cast over with a thin coat waterproofing and wearing course, allowing reinstatement of the carriageway to the original levels.

Composite action between the existing and new slabs was achieved by using hydrodemolition techniques to create pockets in the concrete and expose the existing reinforcement and steel beams. This allowed all works to be undertaken from the highway and involved no works to the railway beneath.

Extensive traffic management allowed two way traffic over the bridge at all times eliminating delays to the travelling public and allowing the Contractor a safe area of work.

Mason Clark Associates undertook the role of contract administrator, CDM Coordinator and supervisor for the works once on site as well and undertaking the initial topographical surveys of the bridge.

Tagged as: Bridge Assessment, Bridge Strengthening, CDM Services, Project Management, Topographical Surveys,