Connecting 28th / 24th Avenues South

Client: City of SeaTac

Role: Lead Roadway Engineer | CH2M

Dates: June 2012 to December 2015

Stephanie served as the roadway design lead for this critical segment of 28th/24th. The project completes the gap that currently exists from 28th to the southern limits of SeaTac where the project terminates at Des Moines’ Gateway Project on 24th. The project was the missing link that now provides an alternate north-south movement for freight movement and residents in lieu of International Blvd (SR 99). This project begins at S 200th St. and is considered traffic mitigation for Sound Transit’s Angle Lake Link Light Rail Station and will serve as a direct route into the south end of Seattle-Tacoma International Airport.

Stephanie’s roadway design consists of a five-lane section, planter strips and shared-use paths. In addition, she also designed the roadway to be forward compatible with WSDOT’s future SR 509 plans which will have a full interchange at 28th/24th. This includes building a bridge, a tunnel, and the adjacent roadway on 40-feet of embankment fill to meet future vertical clearance requirements. The project is also located adjacent to acres of developable land including the future site of the Des Moines Creek Business Park, and the roadway is being designed to accommodate future business access locations.

Auburn Way South (SR 164) Corridor & Safety Improvements – Dogwood St SE to Fir St SE (2 projects)

Client: City of Auburn

Role: Lead Roadway Engineer & Design Manager | CH2M

Dates: March 2012 to December 2015

This project improves access management, creates u-turns, upgrades transit stops and street lighting. It also widens Auburn Way South (SR 164) to accommodate turn lanes, pedestrians and bicycles. Sidewalks and pedestrian push buttons are being upgraded to meet current ADA standards including countdown pedestrian signals and audible pedestrian push buttons. Traffic signals are also being upgraded to improve both phasing and signal head visibility. Utility undergrounding and waterline improvements are being accomplished as part of this project as well. Stephanie’s work as the lead roadway engineer and design manager not only includes coordination of the design disciplines, but also leading the roadway including WSDOT requirements including Channelization Plans for Approval and Design Variance Documentation.

Windermere CSO Reduction

Client: City of Seattle – Seattle Public Utilities

Role: Lead Roadway Engineer | CH2M

Dates: February 2011 to February 2015

Located along Sand Point Way NE (SR 513), the Windermere CSO Control Project reduces overflows from the Windermere basin from approximately 14 per year to less than one per year. The project included siting and design of a 2.05-million gallon combined sewer overflow (CSO) control facilities to meet Washington State Department of Ecology’s regulatory requirements for the Windermere Basin by 2020.  As the lead roadway engineer, Stephanie’s work involved the reconstruction of both the Sand Point Way NE and NE 65th St roadways, including the site prep, paving, grading, channelization, signing, striping and ADA design. The initial design of this project was completed in 2012 as part of a GCCM delivery model, but post construction in 2015 Stephanie also completed an ADA maximum extent feasible report to document the deficiencies in the construction of the curb ramps with regards to meeting ADA guidelines.

M Street Grade Separation – Underpass

Client: City of Auburn

Role: Roadway Engineer | CH2M

Dates: August 2010 to June 2014

Stephanie served as the roadway design engineer for the M Street SE Underpass Project which created eliminated the at-grade crossing of the BNSF Stampede Pass Line at M Street SE by lowering the roadway to create an underpass. The project constructed two railroad bridges, roadway widening to accommodate up to five travel lanes, sidewalk, bicycle lanes, lighting, traffic signal, stormwater pump station and pond, and relocated utilities to accommodate the new roadway grades. This undercrossing improved safety and freight mobility. The creative roadway geometric design reduced impacts to properties while meeting ADA accessibility requirements. Stephanie was responsible for paving, signing, striping, typical sections, and demolition plans. She also performed interdisciplinary coordination, quantity take-offs, estimating, and specification editing. Throughout construction, Stephanie remained on-call to answer requests for information (RFIs).

Aurora Avenue North Corridor Project – N 145th St to N 165th St

Client: City of Shoreline

Role: Roadway Engineer | CH2M

Dates: October 2004 to May 2005

Stephanie was a roadway engineer for the 2008 WSDOT / FHWA Best City Award Winning Project – Aurora Avenue. The project developed a corridor alignment that uses geometry and other creative measures to minimize impacts on adjoining properties. Through engaging community interaction from preliminary to final design the project addressed community concerns – including public meetings and open houses. This project includes approximately one mile of arterial rehabilitation to improve traffic operations, safety and aesthetic issues within the corridor by adding two new traffic signals, access management, business access and transit lanes (BAT), u-turn accommodations, illumination, and utility undergrounding.

Other Final Design Roles

Other final design projects Stephanie has completed include:

SR 99 & SR 524 Street Sign Illumination & Improvements

Client: City of Lynnwood

Role: Senior Roadway Engineer | CH2M

Dates: January 2013 to June 2014


Powell Butte Reservoir 2

Client: City of Portland

Role: Lead Roadway Engineer | CH2M

Dates: February 2011 to December 2011


Seattle Central Waterfront – Transmission Line Relocation 1

Client: City of Seattle (Department of Transportation)

Role: Lead Utility Engineer | CH2M

Dates: April 2011 to September 2012


Olympic View Drive Corridor Improvements & ADA Evaluation

Client: City of Lynnwood

Role: Roadway Engineer | CH2M

Dates: November 2005 to May 2006 & August 2012 to April 2013


SR 99 Safety Improvement Project

Client: City of Lynnwood

Role: Roadway Engineer | CH2M

Dates: May 2012 to August 2012


21st Avenue SW at SW 336th Street

Client: City of Federal Way

Role: Roadway Engineer | CH2M

Dates: April 2012 – May 2013


La’Aloa Avenue Extension Project

Client: County of Hawaii

Role: Roadway Engineer | CH2M

Dates: August 2008 to February 2009


Taxiway Kilo-1 and Future of Flight Apron

Client: Paine Field Airport

Role: Roadway Engineer | CH2M

Dates: October 2005 to August 2006