Canyon Road Expansion, Pierce County
HWA provided geotechnical and pavement engineering investigations for Canyon Road East in Pierce County. The site is about one mile west of the City of Puyallup and about 2 miles north of State Route 512. The proposed project consists of widening the existing roadway to five lanes with four through lanes (two in each direction) and a two way left turn lane.
41st Street Overcrossing
HWA performed a geotechnical investigation for the design and construction of a 0.5 mile extension of 41st Street, extending from I-5 over the BNSF right-of-way and onto the old Everett Landfill site. The new roadway included a single-span bridge over Smith Avenue and a large 3-span bridge over the Burlington Northern Santa Fe (BNSF) raildroad as well as 8 mechanically stabilized earth (MSE) fill walls up to 30 feet tall.
100th Avenue Kirkland
HWA provided geotechnical engineering for the upgrading of 100th Avenue NE alignment from NE 145th Street to NE 132nd Street in downtown Kirkland. These improvements included street lighting, adding sidewalks and buffered bike lanes within the existing streets, upgrading traffic signals at several key intersections, extending the current two-way left turn lane from NE 139th Street to NE145th Street, construction of storm water facilities, and culvert replacement.