McCann has produced Precast Box Concrete Culverts (PCBC’s) in sizes ranging from 18” x 18” for an electrical conduit at a waste transfer station to a 14’ span x 16’ rise tunnel under a railroad spur at Chicago’s O’Hare Airport. Like many of the other precast companies, we are well versed in producing PCBC’s with standard highway and interstate designs using ASHTO and ASTM standards. However, we supplement this with our ability to cost effectively produce PCBC’s of sizes not found in the ASTM or ASHTO design tables. We are not a “one-size (or length) fits all” producer. We commonly work with contractors, owners, and engineers to match the PCBC weights or lengths to minimize the installed cost.