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Show LONGEST IN THE WORLD. Immense Stone Arch In Bridge at HI Plauen, Saxony. HHH A clone nrcb bridge with a oloat H span of 2011 feet Is now In procoss ol IHHH construction nt Plauen, In Saxony. H Tho span ot the now bridge ls 75 foot ll greater than thnt of tho Cabin John 1 arch, and Is greater by nbout 18 foot PHI than that of tho recently complotcd 'HLi Luxemburg bridge. Tho Plnucn via- ial duct will, therefore, ho tho longost VmHH stono nrch ovor constructed. Statod rl exactly, the now brldgo has a span lll of 00 m, (295.2 foot). It Is constructed bHHl of stono masonry throughout and the KH r 1 IhTI f 'hThThThI tohThThb HH '' Hl ,irTT"llfrWt',Vif'lr''r-'M'li''"g! IhV contract prlco ls surprisingly low, It iHH being only 500.000 marks, or In round HHH flgiircs. $120,000. This very moder- HHHJ nto cost Is oxplalnod by tho low cost ll ot mnuiinl labor in Saxony nnd by rHHl availability closo to tho brldgo slto ot f'l exccllont stono to supply tho ncces- LHH snry masonry. Tho brldgo will ho usod iH for street trnfllc, with n strcot rail- H way and gas nnd water mains. Tho SmHH roadway Is 11 in. (30.1 feet) wldo, nnd fftWWB tho sidewalks are each 3 m. (9.88 jrHl feet) wido. The construction of tho itlH nrch required from 10,000 to 12,000 rlfffl cu. m. ot stono and 12,000 barrels of m&HH comont. The total load on tho foun- HtHI dntlons will bo 15 000 tons und tho JLiH pressure on tho foundation beds will IflH bo 24 kgs. per sq. cm. (311 pounds per iHI square Inch). itHH Manual labor was employed oxclu- fl slvoly In erecting tho centers, nnd (fll nbout three months was required to BlVAl got nut tho timber and to erect It. I'HHI Forty men wore employed In this IHH work. Engineering News. IjH |