Answer
(a) 486 meters
(b) 1830 meters
Work Step by Step
(a) the river span:
$1595.5~ft\times \frac{1~m}{3.28~ft} = 486~m$
(b) the total bridge length:
$6016~ft\times \frac{1~m}{3.28~ft} = 1830~m$
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