What was the brief?
The structural integrity of a client’s existing deck units had started to fail. Corrosion had set in and top deck plate finish had worn away. We were briefed to work from a structural engineering survey and drawings with loading calcs, to design, fabricate and install three new bridge sections.
How did you go about it?
With a number of specialist-sized beams and engineering involved, as well as the three new complete bridge sections, we were tasked with refurbishing an existing unit. This involved craning the unit from site with a full lifting plan, including road barriers and road crossing plates set up.
Once fabricated, the new bridge sections were grit blasted ready for the galvanising process and the old section was stripped back to bare steel ready for re-galvanising.
Once all four units had returned they had their top plate grit blasted again ready for a specialist resin traffic top coating, completed by our third-party supplier, off site. Logistics for this were managed on a return and delivery share.
Once the top coating was complete, the units were returned to the M&C Engineering yard for a PDI inspection. Tested lifting points were also added to aid fitment.
Our site team was then ready to fit the new and refurbished bridge sections, planning the transportation of these using our flatbed hiab lorry on a busy main road.
After a few days’ settlement, we returned to site for minimal snagging.