OAR 741-320-0140
OAR 741-320-0140. Walkways in Tunnels
(1) A walkway conforming to OAR 741-320-0080 (Standard No. 1), shall be constructed and maintained in a tunnel, upon order of the Department, only after notice to the affected railroad and hearing (in case of dispute), and be located as close as is possible to the tunnel wall, with its surface as close as possible to the top of ties.
(2) At each end of a tunnel the walkway shall be gradually tapered in accordance with OAR 741-320-0070 (slope) to meet the base of the ballast section or an existing walkway.