Fig. 2From: Evaluation of the Depth of Deteriorations in Concrete Bridge Decks with Asphalt Overlays Using Air-Coupled GPR: A Case Study from a Pilot Bridge on Korean ExpresswayPhotos of the pilot bridge (‘J’ bridge); a aerial plan view of the pilot bridge obtained from Google maps (an image taken on April 23, 2005), b overall view showing the surface condition (patching, cracking, efflorescence, etc.) of the pilot bridge taken on the Gangneung bound lane (an image taken on the survey day).Back to article page