BridgeLCC 2.0 is user-friendly software developed by the National Institute of Standards and Technology to help bridge designers determine the cost effectiveness of alternative bridge designs, construction and repair strategies, and construction materials. The software uses a life-cycle costing methodology based on the ASTM standard practice for life-cycle costing and a cost classification scheme developed by NIST. This user manual describes the functions and settings in BridgeLCC and includes example analyses that illustrate its use.