Mr。Stephensonaddsthatfromadefectintheconstructiontheabutmentswerethrustinwardsattheapproachesandtheribspartiallyfractured。Weare,however,informedthatthisisamistake,thoughitdoesappearthattheapprehensionatonetimeexistedthatsuchanaccidentmightpossiblyoccur。
Toremedythesupposeddefect,twosmalllandarcheswere,intheyear1800,substitutedforthestoneapproachontheBroseleysideofthebridge。Whiletheworkwasinprogress,Mr。Telford,thewell-knownengineer,carefullyexaminedthebridge,andthusspokeofitsconditionatthetime:——”Thegreatimprovementoferectinguponanavigableriverabridgeofcast-ironofonearchonlywasfirstputinpracticenearCoalbrookdale。Thebridgewasexecutedin1777
byMr。AbrahamDarby,andtheironworkisnowquiteasperfectaswhenitwasfirstputup。Drawingsofthisbridgehavelongbeenbeforethepublic,andhavebeenmuchandjustlyadmired。”*
[footnote……
PLYMLEY,GeneralViewoftheAgricultureofShropshire。