The viewers provided for in the foregoing sections may be appointed before, or at any time after, the entry, taking, appropriation, or injury of any property or materials for constructing said bridge or bridges.
The costs of the viewers and all court costs incurred in the proceedings aforesaid shall be defrayed by the said city, and each of the said viewers shall be entitled to a sum, not exceeding five dollars per day, for every day necessarily employed in performance of the duties herein prescribed.
53 P.S. § 2555