Assertion: aqueduct's construction | /r/AtLocation | all the aqueducts
Facets:
Source sentences:
text: In all the aqueducts the original construction of the bridges was in opus quadratum (masonry), while the substructions are in brick-faced concrete; but the bridges are as a rule strengthened (and often several times) with reinforcing walls of concrete faced with opus reticulatum or brickwork.