Implementation
The Nebraska Department of Roads has sponsored a demonstration project at Roca, Nebraska, to implement a conductive concrete deck inlay on a highway bridge. The inlay has been instrumented with temperature and current sensors to provide data for heating performance monitoring during winter storms.
Roca Spur Bridge is a 150 ft long and 36 ft wide, three-span highway bridge over the Salt Creek at Roca, located about 15 miles south of Lincoln, Nebraska. A railroad crossing is located immediately following the end of the bridge, making it a prime candidate for deicing application. The Roca Bridge project was let in December 2001 and construction was completed in November 2002. The bridge deck has a 117 ft by 28 ft and 4 in. thick conductive concrete inlay instrumented for deicing operation.
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Junction boxes |  |
Power cords and thermocouple wire in PVC conduit |
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Angle iron for electrodes |  |
Slurry grout to prevent de-bonding |
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Casting conductive concrete |  |
Finishing Surface |
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Finishing Surface |  |
Finishing Surface |
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Angle iron electrode - Close-up |  |
Power cord electrode connection |
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52 individual conductive concrete slabs |  |
Grouting power cord connection |
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Deicing controller system |  |
Deicing system in operation |
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Deicing system in operation |