Hoyt, Charles Hamilton, Burr, William H. (William Hubert), 1851-1934, joint author, United States. Bureau of Public Roads · Washington : U.S. Dept. of Agriculture, Office of Public Roads : G.P.O. · leaf 32
ad bridge atRockviUe, Pa., which consists of 48 arches, each having a span of70 feet. The illustration shown in Plate IX is made from a working planprepared in the Office of Public Roads for a plain concrete ?.rch-culvert with a 6-foot span, which may be of service more often th;-nthose of larger… … VlTfB 1 ; i-T^r. .\ -j.- •ico ^^-h-^l ■^■ fAJ:^.. S VU-:, .<■■ 1 -^ ■}, l T/- y <,:^ ■^•.?|--V.V<. I * >,^j;<,^y I ..;>...-; n •V HV?^ ? J1 I Bui. 39, Office of Public Roads, U. S. Dept. of Agriculture. Plate VIII,
Bridges · Culverts
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