The present study proposes the definition of service life and the end-of- life criterion for bridge maintenance. Bridges begin to deteriorate as soon as they are put into service. Effective bridge maintenance requires sound understanding of the deterioration mechanism as well as the expected service life. In order to determine the expected service life of a bridge for effective bridge maintenance, it is necessary to have a clear definition of service life and end-of-life. However, service life can be viewed from several perspectives based on literature review. The end of a bridge’s life can be also defined by more than one perspective or performance measure. This study presents definition of service life which can be used for bridge maintenance and the end-of life criterion using the performance measure such as a damage score. The regression model can predict an average service life of bridges using the proposed end-of-life criterion.

1. 서 론
 2. 교량의 사용수명 현황
  2.1 국내외 교량의 사용수명 현황
  2.2 교량 사용수명 용어 제안
 3. 교량의 수명 종료
  3.1 한국과 미국의 교량 수명 종료 기준
  3.2 교량에 발생 가능한 수명종료 유형
  3.3 사용수명 종료 제안
 4. 국내고속도로 교량 수명 추정
 5. 결 론
 감사의 글
 References

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