Are the girders for the five different brand sets interchangeable?
Answered by: Nick – Girder & Panel and Bridge & Turnpike Heaven SOMEWHAT, Most are but not all. Unfortunately the girders made by Peter Austin MFG are only interchangeable with other Peter Austin MFG sets, girders made by Kenner, Chad Valley and Bridge Street Toys are interchangeable with all Kenner, Chad Valley and Bridge Street Toys sets (from Set #1 all the way through KenStruct Set #72140 and all new Bridge Street Toys sets) The girders made by Irwin Toys are only interchangeable with other Irwin sets (Including the set Irwin made for Popular Mechanics).