Efficient methods for data collection and processing are required to complete channel-instability assessments at 5,600 bridge sites in Indiana at an affordable cost and within a reasonable time frame while maintaining the quality of the assessments. To provide this needed efficiency and quality control, a data-collection form was developed that specifies the data to be collected and the order of data collection. This form represents a modification of previous forms that grouped variables according to type rather than by order of collection. Assessments completed during two field seasons showed that greater efficiency was achieved by using a fill-in-the-blank form that organizes the data to be recorded in a specified order: in the vehicle, from the roadway, in the upstream channel, under the bridge, and in the downstream channel.
Additional publication details
Efficient method for assessing channel instability near bridges
Publ by ASCE
New York, NY, United States
Larger Work Title:
Proceedings - National Conference on Hydraulic Engineering
Proceedings of the 1993 National Conference on Hydraulic Engineering. Part 1 (of 2)