Or. Admin. R. 437-007-0505
(1) All bridge structures and surfaces must be:
(2) All bridges must have rub rails constructed of wood, concrete or equivalent materials that:
ORS 654.025(2) & 656.726(4)
ORS 654.001 - 654.295
OSHA 5-2003, f. 6-2-03, cert. ef. 12-1-03