Meteorological studies indicate that the strong wind loads affecting the Runyang Suspension Bridge（RSB） include mainly typhoons in summer and northern winds in winter.Two anemometers installed in the structural healthy monitoring system（SHMS） of RSB have recorded plenty of strong wind samples for about three years since operation of the bridge.After analyzing the measurement data recorded from 13:00 10

th

March to 16:00 10

th

March 2007

we have induced some strong northern wind characteristics relating the wind speed and direction

the turbulence intensity

the turbulence integral scale and the power spectrum

etc.It has been found that the northern wind speed and direction are stable and the turbulence power spectrum in wind direction coincides well with the Kaimal spectrum

but the turbulence intensity is large

r than that given in the design code.