Knowledge-based expert systems have growing applicability to the transportation industry. A previous K-TRAN Project, KU/KSU-93-2, "An Expert System for Fabrication Error Solutions", developed an expert system that examines and recommends corrective action for fabrication errors detected in the plant for steel bridge members. Expert systems have been used to solve a broad range of problems which match the various functional areas of transportation engineering such as: planning, design, operation and control, management, maintenance and rehabilitation. The capabilities of the Bridge Fabrication Expert System (BFX) have been enhanced and the knowledge base expanded. Significant improvements have been made in the system/user interface. The new version of Level 5 Object with added functionality was tested with BFX and all systems worked providing improved input/output capability.