Coldstream Concrete are proud members of

Association of Ontario Road Supervisors (AORS)

London & District Construction Association (LDCA)

Ontario Concrete Pipe Association (OCPA)

Ontario Sewer & Watermain Construction Assocation (OSWCA)

Sarnia Heavy Construction Association (SCA)

Land Improvement Contractors of Ontario (LICO)

The Road Authority (TRA)

London Heavy Equipment Association