Historic Kentucky bridge engulfed in flames, arson suspected Washington County Police are investigating after the Mt. Zion covered bridge was destroyed by a fire late Tuesday. The bridge was built in 1871. Author: Conner Farrell (WHAS 11) Published: 10:14 AM EST March 10, 2021 Updated: 6:08 PM EST March 10, 2021 WASHINGTON COUNTY, Ky. — According to a Facebook post, Washington County Police and Kentucky State Police are investigating after a historic covered bridge was destroyed by a fire. Police that arson may have been the cause for the destruction. Washington County Judge Executive Timothy Graves was one of the first on the scene. "Coming down that hill I could see the flames, and the smoke in the night because it was close to midnight," Graves said. "I almost got sick to my stomach"