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 50
Bui. 39, Office of Public Roads, U, S. Depf. of Agriculture. Plate XIII. ^H ■IF /7- - ,-v 1 J f f 1 * ^^ ■ |; , ^^^^m ^^H H. , g^^^^ ^^1 B ^ 1 9 1 I ! ■ , 11 i f% 1 4 ^^^ ^f1|M ;r ^ r K. , ^ ■^B • -t M ^ ^S 1 -: jI J/TSw ^l^^^i^^ W^^\ If %m 1 1 f ^Jl^ j<^tSH f ^ ^^n ^^^Kj B.-. ^•qi., 1 k ^HH ^^H… … CONCLUSION. 21 CONCLUSION. In conclusion, it may be said that the relation of culverts andbridges to the general movement for.the improvement of our publichighways is intimate. The desirability and economy of buildingthese structures of durable and permanent material, or according tointelligent or…
Bridges · Culverts
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