Oregon Department of Transportation, Highway Division
Criteria for Approval of Freeway Median Crossovers
A freeway median crossover may be approved and constructed if the following criteria are met:
The median is 40 or more feet in width measured at right angles between the edges of the inside paved shoulder and does not have a metal or concrete median barrier;
The crossover is in a location providing adequate vehicle stopping and sight distance and other safety requirements;
The crossover is three or more miles distant in either direction from an interchange, measured to the center of the undercrossing or overcrossing structure; and
The crossover is one or more miles distant in either direction from any other entrance or exit ramp, (i.e., safety rest area), and 1⁄2 mile or more distant in either direction from an undercrossing or overcrossing structure measured to the center of the structure.
The criteria of section (1) of this rule establishes the standards for all freeway median crossovers in this state. However, if one or more of those criteria are not met, the Chief Engineer, considering need and safety, may approve and order the construction and installation of a freeway median crossover following and based upon an engineering investigation.