Fleming & Associates has performed the design of new and rehabilitation or replacement of existing aerial crossings for over thirty years. Projects include aerial crossings up to 250-linear feet. Modifications vary by project but can include deep foundations and pile design, ultrasonic testing of corroded wastewater pipes, custom tubular box truss design, abutment design, ductile iron pipe and bolted flange connection design, and evaluation and specification of high-performance coatings.