SDOT uses high-tech scans to see what's inside Spokane Street Viaduct's road deck

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September 20, 2021

By BENJAMIN MINNICK
Journal Construction Editor

Photos from BDI [enlarge]

Ground-penetrating radar uses electromagnetic waves to locate potential concrete delamination.

Sound scans use high-tech audio equipment to “listen” to the road through an array of microphones.

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