The encyclopdia britannica; a dictionary of arts, sciences, literature and general information . licius, the bridge defended by Horatius. The Pons MilvjuS,now Ponte MoUe, was reconstructed in stone by M. AemiliusScaurus in 169 , and some portions of the old bridge atebelieved to exist, in the present structure. The arches varyfrom 51 to 79 ft. span. The Pons Fabricius (mod. Ponte dei Fig. 2.—Bridge of. Alcantara. type of bridges of this kind. The Wittingen Bridge by the sameengineers had a spai of 396 ft., probably the longest timber ^For the ancient bridges in Rome see further Rome: Archa
The encyclopdia britannica; a dictionary of arts, sciences, literature and general information . licius, the bridge defended by Horatius. The Pons MilvjuS,now Ponte MoUe, was reconstructed in stone by M. AemiliusScaurus in 169 , and some portions of the old bridge atebelieved to exist, in the present structure. The arches varyfrom 51 to 79 ft. span. The Pons Fabricius (mod. Ponte dei Fig. 2.—Bridge of. Alcantara. type of bridges of this kind. The Wittingen Bridge by the sameengineers had a spai of 396 ft., probably the longest timber ^For the ancient bridges in Rome see further Rome: Archaeologyand such works as R. Lanciani, Ruins and, ^xeavaHpns of AncientJJowie (Eng. trans., 1897), pp. 16 foil. ^ BRIDGES 525 span ever constructed. \ Of stone bridges in Great Britain, theearliest were the cycldpean bridges still existing on Dartmoor,consisting of stone piers bridged by stone slabsJ The bridgeover the East Dart near Tavistock had three piers, with slabs. Fig. 5.—^Crowland. Bridge. It is 15 ft. by 6 ? ft. (Siiailps, Lives of the Engineers, ii. 43)reputed td have lasted for2000 years. ; • The curious bridge at Growland near Peterborough (fig. 5)which now spans roadways, the streams which formerly flowedunder it having been diverted, is one of the earliest known stonebridges in England. It is referred to in a charter, of the year943. It. was probably built by the abbots. The first bridgesover the Thames at London were no doubt of timber. William ofMalmesbury mentions the existence of a bridge in 994. J: Stow{Sufoey of the; Cities of London and Westminster) describes was destroyed for military reasons by Carmagnola in 1416. TheRialto bridge at Venice, with a span of gi ft., was built in1588 by Antonio da Ponte. Fig; 7 shows the beautiful Pontedella Triniti erected at Florence in 1566 from the design ofB. Ammanati. ^ 6. Modern Bridges.— (a) Timber.^In FiUgland timber bridgesof considerable span, either braced trusses or laminated a
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectencyclo, bookyear1910
