This is an big Ho scale bridge, total Length is 39 inches. It's in 3 sections with each section being 13 inches long. The bridge is 6 inches tall. And is 115mm wide from inside rail to inside rail on road bed. Made custom for a customer HO scale Two lane version. This bridge was originally made by request of a customer who sent me the measurements that worked for his set up. This is customizable. The original bridge I designed was for N scale so I have N scale versions as well. Measurements can be changed as well as minor design changes. Change in size will effect price. If any bigger price will go up. If smaller price will go down. It's 3D printed and takes a while to make. The bridge is made per order and each section takes several days days to 3d print. So it may take up to a week to 3d print and ship out. It's not cheap to make these and they use a lot of hours of machine time and a tons of filament. Color can be changed as well if I have enough of the color you want it made un. But I usually make these in grey or silver. Fast shipping. The material these are made from is pla filament plastic .