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Arizona Highways Civilization Follows the Improved Highway

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Arizona Highways Civilization Follows the Improved Highway ARIZONA HIGHWAYS CIVILIZATION FOLLOWS THE IMPROVED HIGHWAY VOLUME 1 DECEMBER. 1925 NUMBER 9 BEAUTIFUL GRANITE DELLS MERRY CHRISTMAS Nineteen and a quarter centuries ago in the town of Bethlehem in Old Judea, a Saviour-the long awaited Messiah-was brought forth in a stable, UJrapped in swaddling clothes and cradled in a manger. On the hills of Judea, the shepherds watching their flocks were given the glad tidings by an angelic chorus and in the heavens a great star appeared guiding them to the humble birthplace, UJhile three great kings of the Orient land, with camels laden with gifts, followed the star to Bethlehem to boUJ down before the King of Kings. Ever since that first Christmas morning Christian nations and people have celebrated the birth of the Christ child. Gifts are given and received. Business . men hurry to their homes to cele­ brate Christmas day with their families. For several nights they drive speeding automobiles over State highways to reach theii­ homes in time for Christmas. As the Shepherds of Judea watched their flocks on the hills that first Christmas eve, district and resident engineers of the Ari­ zona Highway Department, together with their crews, keep guard over the great State HighUJay system to preiJent any injury to the speeding traveler, through sudden dangers caused by the elments. The Arizona Highway Department expresses the wish that every citizen of the State may enjoy a Happy Christmas and a joy­ Granite Dells, called the Garden of the Gods of Arizona, is on the State Highway betwee.n Prescott and Ash Fork. ous and prosperous New Year. Its queer and magnificent rock and boulder formations make it especially interesting. '!1 - --~ i?~{J~ ~~~~,,~. 6 ARIZONA HIGHWAYS DECEMBER, 1925. DECEMBER, 1925. ARIZONA HIGHWAYS 7 ---------------- - -- - -------- ___ _ _ _____ ______ __ _ __ _ __ _ _;__ __ Arizona's Largest Steel Highw~y Bridge State Highway Heads Hold HE Gillespie Dam Highway Bridge for two traffic lanes. The estimated forcing steI! for dowells at the construc­ Tover the Gila river at the Gillespie weights of structural steel are 100 tons tion joints. Dam, on which the Arizona Highway De­ each for the 150-foot spans and 135 tons The abutments are of the U-type wfth Annual Meeting partment is now asking for bids will be each for the 200 foot spans making a a pier for the support of the span and the lon gest stee l bridg e in the state. It to tal of more than 1000 tons of struct­ reinforced wings tied by reinforced ONSTRUCTION of a series of super­ dress of welcome and also by other State Engineer, was on the sub-com­ might be said to be the longest perma­ ural steel. concrete ties in the earth fill, making mittee on plans and surveys, but was nent highway bridge in the state sys­ The spans are designe -d under modern an economical type for the height which, Chighways running north and south speakers. The delegates were welcomed to the city of Detroit by Mayor John W. unable to attend the meeting. tem being exceeded in length only by specifications for live load and heavy on the east end of the bridge is approxi­ and east and west across the continent Smith. The response to these addresses the bridge over the same stream at An ­ trucks for bridges on the Federal Aid mately 35 feet from grade to the bottom were recommended at the Eleventh An­ Among the subjects discussed at the and the president's annual address were telope hill near Wellton. The latter Highway system. The concrete floor and of foundations. The total concrete yard­ nual Meeting of the American -association meeting were "Economics and Melihods given by Frank F. Rogers, state high­ 1,ridge is a combination of 910 feet of its supports being designed for two 15 age in abutments and piers is more than of state high way officials, comprising of Widening and Strengthening Pave­ , way commissioner, Michigan. There fol­ concret e spans and 855 feet of timber ton trucks abreast on the bridge with 3000 cubic yards with but 30,000 pounds the heads of the highway departments of ments," by William H. Conn1<ll, secre­ lowed the annual re .port of W . C. Mark­ trest le. an additional allowance of. 30 . per cent of reinforcing steel. the 48 states, in the Cadillac hotel in tary of highways and engineering execu­ The comparative lengths of Arizona for impact. In this floor alone there is a In April of this year a contract was Detroit, Mich., November 18 to 21, in ­ ham, executive secretary, and a testi· tive, Pennsylvania; "Highway Police and monial to Past President Fred R. Whlte , bridges are as follows: total of 930 cubic yards of concrete and awarded for soundings and a complete clusive. Highw ay Safety Devices," by John A. chief engineer, Iowa, by Frank Page, Anteloi,e Hill . ...... 1765 feet 75 tons of reinforcing steel, enough to set of borings made to determine the lo­ W. W. Lane, chief engineer of the Ari· MacDonald, ·state highway commission­ chairman, state highway commission , Gillespie Dam ........ 1660 feet build complete a fair size bridge. cati on. A total of 29 holes were drilled zona Highway Department, represented er, Gonnecticutt; "The Pay-As-Yeu-"'o North Carolina. The session ended with Tempe Bridge .... .. 1507.8 feet The foundations and substructures, a!­ at that time, the first three being ex­ Arizona at the meeting and was a mem­ Method of Highway Financing," by J. T. the roll call of states. Gila River (Sacaton) 1486.5 feet though they might not be difficult in an perimental to determine the best pos­ ber of the sub-committee on construc­ Donaghey, state highway engineer, Wis­ Florence Bridge ...... 1430 feet ordinary stream are to those engineers sible location for the bridge and the tion of the committee on standards. One of the commit.lee on standard:=;, consin; and "Recent Highway Research The proposed bridge is located at tht who know this stream from previous ex­ rest to determine pier foundations. Some The recommendations for the series or one of the most important of the com­ Developments," by Charles H. Upham, Gillespie Dam on the Phoenix highway , perience, considered a difficult undertak­ data was available as to rock elevations super-highways were stressed by Gover­ mittees, Mr. Lane, was on the sub-coni­ whose paper is contained elsewhere in 13 mil es from Hassayampa and 24 miles ing and a job to be handled with cau­ at the dam upstream from the site and nor A,exander J. Groesbeck in his ad- mittee on construction. W. C. Lefebvre, this issue of ARIZONA HIGHWAYS. from Gila Bend and will constitute an tion. this furnished a basis for the first tests important link in the east an d west high­ The deepest pier foundation is -ap­ from which a line was established 600 way sys tem of the state . proximately 45 feet below the stream feet below the south edge of the apron The structure will be composed of nine bed and rests on a compact caliche hard of the dam and holes were put down on Recent Highway Research stee l spans, five 200-foot spa ns over the pan. Th e conditions found by drill tests two lines 30 feet apart parallel to the main channel with two 160-foot spans and are favorable to the use of steel sheet clam and with holes opened 200 feet 20 feet of earth filled abutment on each piling and open dredging. These two apart on each line. en cl, making 1620 feet of steel and 40 piers of about this same depth and con­ In view of the many bridge failures on Developments feet of concrete or a total length of tain approximately 500 cubic yards of this stream much time and care was tak­ 1660 feet. concrete each. en in securing adequate data and prepar­ By CHARLES M. UPHAM, Director TWO TRAFFIC LANES PIERS VARY ing a design which would be proof Highway Research Board of the National Research Council The steel spans are all of the through The other piers vary in depth below aga inst the terrific floods and yet be an riveted type with a clear width between strea m bed from 20 to 30 feet. All piers eco nomical structure within the means of N THE 'DEVELOPMENT of every and oth er organizations engaged in termine soriie type of road surface that railings of 21 feet giving a mple width are of grav ity type with but little rein- the funds available. Iscience there are certain periods · highway r esea rch in the prosecution of will be low in first cost and mainte­ which stand out as epoch s in the the studies it now has under way. nance and suitable for light traffic. progress of that science. Just as the The first such study to be undertaken Thu s far, only the preliminary stages Bates Road, the Pittsburg (Calif.) and by · the board was that on the economic of this investigation have been made, HIGH BROW (? COLLEGE MEN promise to feed him to the lions . if he Customer: Have you finished printing the Arlington tests were distinct de- value of steel reinforcement in con- but these show what has been done and even looked like he was thinking about those signs, you know, "Don't put off velopments in the science of highway crete roads. In connection with this what is now under way in at tempts to Whenever I hear the r ema rk that a Jove? till tomorrow what you can do today," construc ~ion, so the investigations work, careful field inspections have so lve this problem .
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