Oregon Administrative Rules
Chapter 741 - DEPARTMENT OF TRANSPORTATION, RAIL DIVISION
Division 310 - SIDE CLEARANCES
Section 741-310-0050 - Miscellaneous Structures

(1) Cattle guards and cattle chutes -- OAR 741-310-0040(3) applies.

(2) Refuge platform -- 8 feet (OAR 741-310-0040(3) applies to bracing for platform railing).

(3) Block signals on bridges and trestles -- 8 feet.

(4) Handrails on bridges and trestles 44 inches high or less -- 7 feet 9 inches.

(5) Interlocking mechanisms including all devices at switches used for the control of signals or protective devices at crossings 4 inches high or less above top of rail -- 3 feet from centerline of track or located adjacent to switch stand. Interlocking mechanisms 4 inches high or less above top of rail at power switches and spring switches require no minimum clearance. This section applies only to interlocking mechanisms located at or above top of rail.

(6) Signals, switch stands, and switch housings constructed 3 feet high or less above top of rail -- 6 feet. Power switches require no minimum clearance. This section applies only to signals, switch stands and switch housings which are at or above top of rail.

(7) Engine Service Facilities:

(8) See Figure 310-5 for a diagram of minimum clearances on miscellaneous structures.

(9) Overhead wires, used to transmit electric energy, and the poles that support them, should have a minimum clearance of not less than that specified by the 2002 edition of the National Electric Safety Code, part 2, "Safety Rules for the Installation and Maintenance of Electric Supply and Communication Lines", Section 23, "Clearances", approved by the American National Standards Institute.