Excerpt from Object-Lesson and Experimental Roads, and Bridge Construction, 1912-13: No. 53 During the fiscal year 1912 - 13 the Office of Public Roads, under the general direction of the chief engineer, Vernon M. Peirce, and the immediate control of the highway engineer in charge, B. F. Heidel, supervised the construction of object-lesson roads as follows: One bituminous-concrete, 1 bituminous-macadam, 7 macadam, 4 gravel, 1 gravel-macadam, 1 brick-cinder, 14 sand-clay, 1 sand - gumbo, 3 shell, and 9 earth. 'three other roads begun during the past fiscal year were not completed, and the description of the work on them will be reserved for the next annual report. Exclusive of the assistance afforded by the office in the form of the salaries and expenses of its engineers, the object lesson roads described below cost the various communities in which they were located $94, 323. 68. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.