United States. Department of Transportation. Federal Highway Policy & Guidance Center (2020). Action: Inspection of Non-Structural Tunnel Elements Located above Roadways. United States. Department of Transportation. Federal Highway Policy & Guidance Center. https://rosap.ntl.bts.gov/view/dot/77780
United States. Department of Transportation. Federal Highway Policy & Guidance Center. Action: Inspection of Non-Structural Tunnel Elements Located above Roadways. United States. Department of Transportation. Federal Highway Policy & Guidance Center, 2020. https://rosap.ntl.bts.gov/view/dot/77780.
United States. Department of Transportation. Federal Highway Policy & Guidance Center Action: Inspection of Non-Structural Tunnel Elements Located above Roadways. United States. Department of Transportation. Federal Highway Policy & Guidance Center, 2020, ROSA P. https://rosap.ntl.bts.gov/view/dot/77780.
The purpose of this memo is to notify tunnel owners of the circumstances of the February 21, 2018 fatal crash in the Lehigh Tunnel and to emphasize the importance of inspecting, documenting, and promptly repairing significant corrosion in nonstructural tunnel elements located above roadways.
United States. Department of Transportation. Federal Highway Policy & Guidance Center (2020). Action: Inspection of Non-Structural Tunnel Elements Located above Roadways. United States. Department of Transportation. Federal Highway Policy & Guidance Center. https://rosap.ntl.bts.gov/view/dot/77780
United States. Department of Transportation. Federal Highway Policy & Guidance Center. Action: Inspection of Non-Structural Tunnel Elements Located above Roadways. United States. Department of Transportation. Federal Highway Policy & Guidance Center, 2020. https://rosap.ntl.bts.gov/view/dot/77780.
United States. Department of Transportation. Federal Highway Policy & Guidance Center Action: Inspection of Non-Structural Tunnel Elements Located above Roadways. United States. Department of Transportation. Federal Highway Policy & Guidance Center, 2020, ROSA P. https://rosap.ntl.bts.gov/view/dot/77780.
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