OAR 741-320-0100
Walkway Standard No. 3: Switches
(1)
Walkway Standard No. 3 shall be a walkway constructed to a minimum width of 6 feet, as measured from the outside edge of the rail. It shall be constructed and maintained so that the elevation of its surface is approximately level with the top of the ties, but not above top of rail. Except as provided in section (2) of this rule, Walkway Standard No. 3 shall be located along both sides of the track for a minimum distance of 125 feet on each side of every switch stand or other trackside switch-throwing mechanism.(2)
Walkways conforming to this standard shall be continuous and maintained from the switch stand through the switch frog and along the diverging tracks to a point at least 25 feet beyond the 13 feet clearance point of the switch.(3)
An additional 3 feet of walkway width shall extend for a minimum distance of 4 feet in each direction from the switch stand or other trackside switch-throwing mechanism on the side of the track where the mechanism is located. This additional 3 feet of width shall be gradually tapered back to the 6 feet minimum width in a distance of not less than 20 feet.(4)
See Figure 320-3 for a diagram of the minimum measurements for Walkway Standard No. 3.
Source:
Rule 741-320-0100 — Walkway Standard No. 3: Switches, https://secure.sos.state.or.us/oard/view.action?ruleNumber=741-320-0100.