For the past 4 years a multidisciplinary team of researchers at the University of
Cincinnati Infrastructure Institute (UCII) has been studying the development of instrumented
monitoring based condition assessment methods by making use of two fully operational
reinforced concrete deck on steel stringer bridges in the Cincinnati, OH area. The
instrumentation packages allow for the measurement of ambient conditions, as well as low
frequency and high frequency components of structurally related signals. In addition, each
bridge is equipped with a weigh-in-motion (WIM) scale which allows the weight and speed of
all vehicles crossing the bridge to be monitored. All measurements are recorded by a PC-
based data acquisition system. Both bridges are tele-remotely operable from laboratories at
UCll via standard telephondmodem connections and custom designed software forming a
user friendly data acquisition system interface. This paper reports on the current status of the
research effort behind the development of the monitor and its associated user interface.