Project Title: Structural Health Monitoring of Suspension Bridge Main Cables
Project #: 730-33343-18
Issued by: Oregon Department of Transportation view agency website
Publish Date: 6/5/2018
Due Date: 7/6/2018 This opportunity has closed.

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Agency is requesting proposals for the design, installation, operation and maintenance of a structural health monitoring system ("SHM System" or "System") that can detect and locate fracture events of the wire strands which compose the main cables of the suspension portion of the bridge structure. It is anticipated that acoustic emission sensors will be installed on the vertical suspender rope castings which are clamped onto the main cables at the suspender rope locations. Disassembly of the suspender rope castings or the existing cable wrap system will not be allowed for this project. Modification of the castings such as drilling and tapping threaded holes, bolted attachments or the use of adhesives will be considered for means of attaching sensors to the castings. The SHM System is anticipated to be composed of sensors, lead wires or RF communication, data acquisition, signal conditioning, weather proof enclosures, data storage, transfer and analysis, all of which is to be provided by Consultant. System electrical power can be provided by solar panels, wind turbines, land supplied power or a combination of these sources. After the System has been installed, Consultant shall demonstrate the sensitivity of the System to simulated wire strand fracture and event location accuracy. The SHM System is anticipated to be operational for a minimum period of 2 years from the installation date, after which the results of the monitoring will be evaluated by Agency to determine if further monitoring is required up to a maximum monitoring period of 4 years. Agency prefers to rent or lease the monitoring equipment as opposed to purchasing, for the duration of this project.


Contact Stacie Olano at 1 (503) 986-6913

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    Contact Stacie Olano at 1 (503) 986-6913

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