| Perteet was the prime design consultant for 1.54 miles of improvements to SR 527 within the City of Everett. The roadway was being widened from its two-and three-lane configuration to five lanes with planted center medians, Class II bike lanes and sidewalks.
The northern half of the project was directly adjacent to the environmentally sensitive Silver Lake. This required a design to mitigate project impacts while enhancing adjacent lake wetlands. The concerns of the neighborhood were addressed with extensive landscaping, moving the roadway as far away from the lake as possible, and by limiting the heights of retaining walls.
Perteet was responsible for the project design, WSDOT hydraulics report, project design deviations, channelization plan approval and TESC plans for approval. We reconstructed the roadway to improve stopping sight distances and illumination, signalization, and storm drainage—and designed and drafted these elements to WSDOT standards. The storm drainage system included detention and retention facilities in accordance with Washington State Department of Fish & Wildlife requirements. The project also included the elimination of several fish passage barriers within the drainage basin by the addition of new bottomless culverts, spawning gravel and log weirs. Extensive utility coordination was required for upgrading and relocation of gas lines, power poles, and overhead telephone and cable lines.
Due to a WSDOT requirement for eliminating turning movements at intersecting dead end residential streets, Silver Lake Road was extended through a regional park to connect to an arterial that runs parallel to SR 527.
The project’s location required coordination with the City of Everett Parks Department Master Plan for Silver Lake Park. Specific challenges included transit consideration and coordination with the access design of a nearby fire station, construction of water quality enhancements within a limited right-of-way, permitting improvements through the JARPA process, and keeping traffic flowing during construction.
The project was a multi-agency partnering effort involving the City of Everett, Snohomish County and WSDOT. Perteet initially provided design under the city’s lead. We finished design efforts and WSDOT took the lead for project advertisement and construction contract administration. Our design staff co-located with the WSDOT design team during final PS&E, which was important to the project’s success.
During construction, we provided on-call services including environmental compliance assistance, continued agency coordination efforts, and technical assistance on daily activities. SR 527 was completed on time and budget in May 2006. |
