...streets and alleys and the construction of bridges in the several municipalities of this Ci,mmonwealth; the grading, paving, macadamizing or otherwise improving...ascertaining the damages to private property resulting thetefrom; the assessment of the damages, costs and expenses thereof upon the property benefited: and...

...out, opening, widening, straightening, extending or vacating streets and alleys and the construction of bridges in the several municipalities of this Commonwealth, the grading, paving, macadamizing or otherwise improvingstreets and alleys proi iding for ascertaining the damages to private property resulting therefrom...