Project: Floor Sawing and Bridge Removal
Location: Fornham Lock Bridge, Bury St Edmunds
Client: Suffolk Highways
The project was to replace an existing road bridge which was crumbling in the village of Fornham St Martin. For the past 5 years the current bridge had a weight limit of 7.5T for safety reasons.
Suffolk Highways has a specialist team dedicated to working on the counties bridge structures. The replacement program included for the removal of the complete bridge deck, the buttress walls strengthened and a new bridge deck, capable of carrying the EU directive of 44T, installed.
Drill Masters working closely with Suffolk Highways were required to diamond floor saw the bridge into strip sections so it could be lifted away from the stream running below and broken up.
Once the road was closed and a diversion was in place the tarmac top was stripped from the bridge to expose the concrete structure. Over a 5 day period Drill Masters were required to diamond floor saw the bridge into strips with a petrol floor saw. The total depth of cut was 550mm, which required a blade of 1.2M in diameter. The requirement was for 9 no. cuts at 2.3M long and 550mm deep. Once all the cuts were completed 2 no. 150 diameter holes were cored over these cut lines so chains could be attached and the sections lifted away with a 360 degree digger for breaking up. The bridge was closed for a 9 week period whilst the complete operation was completed and the bridge replaced.
It is testament to the team that the project finished on time and most people are none the wiser to the bridge every being replaced apart from the removal of the weight limit signs. This work will see the bridge last into the future as we continue to to show we are leading Suffolk Floor Sawing experts.