Third biennial report of the Oregon State Highway Commission

Note 3 — LETTER OF TRANSMITTAL

Reading edition

Designed and construction supervised by Highway Department.

Where loading is referred to as "Heavy," the structure is designed for a twenty-ton roller and for 100 lbs. per sq. ft. Where loading is referred to as "Medium," the structure is designed for a fifteen-ton roller and for 75 lbs. per sq. ft.