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COLLEGE WAY (SR 538) WIDENING AT I-5

Project Details

Client Name: City of Mount Vernon
Construction Cost: Est. $8.5 Million
R&E prepared the PS&E package for the widening of College Way (SR538) beneath the Interstate 5 overcrossing. The project consisted of widening College Way from 4 to 6 lanes at the I-5 interchange. The work included the construction of soil nail and tieback retaining walls beneath I-5 to allow for the roadway widening, two new traffic signals at the north and southbound on/off ramps, architectural wall facing, stormwater / force main upgrades, pedestrian facilities, and complete overlay of College Way within the project limits. The design provided many challenges to design the retaining walls such that no new loads were induced into the existing I-5 overpass. Additional services included ROW acquisition from four affected parcels and extensive construction sequencing work and traffic control plans to reduce the construction impact to the traveling public. In addition to design services, R&E provided construction management, and inspection for this federally funded project in full compliance with the Local Agency Guidelines Manual.  R&E’s construction services included inspection and management of the Skagit PUD’s water main facilities on the project and interagency coordination between the interests of the City of Mount Vernon and WSDOT.

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