During 1961, the equivalent of about 800 lane-miles of pavement were tested and analyzed. The largest portion of this mileage was on completed Interstate projects. In November, three pavements selected by the Bureau of Public Roads for serviceability-index ratings (6) were tested; and these are discussed briefly in this report.

Periodic surveillance of the roughness of all of the roads presently listed in Tables 1 and 2 is contemplated. New primary and Interstate construction will be included in the future. Thus, each respective project may be eventually characterized by a history of roughness measurements.

Report Date


Report Number

No. 193

Digital Object Identifier