Bridge and Tunnel Construction Project Updates at Zion National Park

Construction for the bridge and tunnel preservation project started in April 2021. In 2017, bridges and tunnels along the Zion-Mount Carmel Highway were inspected and are considered safe, but attention is recommended to increase service life and avoid major rehabilitation needs. https://www.nps.gov/zion/learn/news/bridge-and-tunnel-construction-project-updates-at-zion-national-park.htm
Source: National Parks Zion