SR 169 Widening Phase 1

CLIENT: City of Maple Valley

PROJECT OWNER: City of Maple Valley

START DATE: 04/2019

END DATE: 05/2020

ROLE: Prime Contractor

MAJOR WORK ELEMENTS: 

• Hillside excavation consisting of 1,400 CY of earth relocation
• Soldier Pile wall spanning 1,000 LF in length with 10,550 SF of exposed surface with a split stake face form liner receiving a pigmented sealer & anti-graffiti application
• Installation of a 200 FT long x 100 FT wide x 8 FT tall storm infiltration system
• Modular wetland facilities for clean discharge of storm water
• Over 2,200 LF of storm drainage pipe installation
• Traffic signal system modification to accommodate the additional lanes of traffic and transit pickup location
• staged construction sequence requiring center island work to be completed with traffic diverted around work zone on either side