The EM method is a valuable tool for Civil Engineering for estimation of the real stress in the prestressing tendons, quality control during construction period, calculating the stress loss due to friction and relaxation, long-time monitoring of stress changes due to concrete creep, temperature changes, traffic load etc. Overview of EM technique with practical applications in the Civil Engineering is presented. The new generation of EM measuring devices is based on more than 15 years experience, including health monitoring systems for the nuclear power plant and a large span cable stayed and suspension bridges. Examples of laboratory and field tests are presented, including uncertainty of stress measurement, long-time stability, resolution and reliability.

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In the first list item, replace: "Effective damping ratio δ" and "effective damping ratios of δ = 3-4%" with: "Effective logarithmic decrement δ" and "effective logarithmic decrements of δ = 3-4%" fib secretariat

Bridges are and have been designed on lifetime basis, as given in standards applicable at the time of design. The design lifetime for newly designed bridges as given in Eurocodes is 100 years and according to the old Slovak standard it was 80 years only. The first generation of prestressed concrete bridges have been used in Slovakia (formerly part of Czechoslovakia) starting from 1950s, and thus, according to old standards, they approach the end of their design lifetime. Nowadays, due to insufficient maintenance, many of them are in unsatisfactory condition. This paper focuses on the condition survey of the bridge on the road No. I/18 - in the part “Zlatné” of village Strečno and on the design of immediate remedial works which were necessary due to its potentially dangerous condition. Moreover, the design of restoration is also described.