WSDOT SR 704 Cross Base Hwy
Drilled piers and bolt assembly for Noise Wall

The Geotechnical report indicated a lesser size and amount of cobble than what was found on-site. The site consisted of large cobbles and pit-run, making the use of casing...

Milwaukee Substation
Wall Steel Pipe

The new power substation upgraded the electrical capacity in the industrial area of Tacoma. McDowell NW was selected as a subcontractor for the placement of driven steel pipe piles...

Mt. Vernon Waste Water Treatment Plant

The Mt. Vernon Waste Water Treatment plant represents the largest single project for McDowell NW with 631 24” diameter auger cast piles ranging in depths from 84’ to 90’. The 120 ton capacity pile included an extra heavy duty rebar cage...