Tunnel Wash
Washing the tunnel walls and ceilings are one of the many maintenance duties tunnel personnel perform during the summer months.
https://www.codot.gov/travel/ejmt/photo-tour/Tunnel_Wash_1.jpg/view
https://www.codot.gov/travel/ejmt/photo-tour/Tunnel_Wash_1.jpg/@@download/image/Tunnel_Wash_1.jpg
Tunnel Wash
Washing the tunnel walls and ceilings are one of the many maintenance duties tunnel personnel perform during the summer months.
