Abstract
City of Yokohama manages more than 7, 400km long roads including about 900km of primary roads. It is expected that most road infrastructure (road asset) will be reached to their life in near future and it is also expected that maintenance cost will be increased and increased. Then road bureau of Yokohama decided to introduce asset management system (AMS) with the goal of rationalization of pavement management, equalization and reduction of maintenance cost and so forth. Major challenges are required to establish AMS and pavement data has been analyzed in terms of pavement service life and prediction model for primary roads. Also surface visual identification manual will be prepared for residential roads. That manual enables uniform inspection of pavement and finally helps us achieve accountability to Yokohama citizen.
