A limit state is defined as a condition beyond which the bridge or component ceases to satisfy the provisions for which it was designed. Components and connections should satisfy Eq. 7 for the applicable combinations of factored force effects as specified at each of the following limit states:

• Strength I Limit State

  Basic load combination relating to the normal use of the bridge.

• Strength II Limit State

  Load combination relating to the use of the bridge by owner-specified special design vehicles and/or evaluation permits vehicles without wind.

• Service I Limit State

  Load combination relating to the normal operation of the bridge with 90km/hr. (65 m.p.h.) wind, and with all loads taken at their nominal value. Compression in prestressed concrete components is investigated using this load combination.

• Service III Limit State

  Load combination relating only to tension in prestressed concrete structures, with the objective of crack control.