Developing and improving local roadways that meet the transportation needs of our growing communities is a prominent concern for KBA’s clients. KBA understands that road construction has its own set of challenges, whether constructing a new road through timber, widening a quiet residential street, or reconstructing a heavily traveled arterial in a busy metropolitan area.

SDOT AAC Dexter Avenue N

SR 169 Road Widening

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Client: City of Maple Valley

Location: Maple Valley, Washington

2019 - In Progress

KBA is providing full CM services for the City of Maple Valley’s $4.8 million street widening project. The City designed a wider SR 169 corridor to mitigate traffic in the growing city. The most notable feature of this project is the use of a soldier pile wall which permitted the addition of a commuter lane, bike lane, and sidewalk. A comprehensive drainage system as well as a state-of-the-art infiltration system. During KBA’s initial review of the project it was determined a few items the designer incorporated into the project were not actually needed based on KBA’s knowledge of the area’s geological make-up from previous work in the area. By eliminating these items (structural soil and pedestrian handrail), we were able to reallocate resources to renovate an entire intersection, that was not in the original design, with the latest in traffic lighting, control, and pedestrian convenience. The resulting changes and upgrades were completed within the original timeframe.

2019 AAC Package 1 (N 40th, N 50th, Green Lake, and N 80th)

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Client: Seattle Department of Transportation

Location: Seattle, Washington

2019 - In Progress


KBA is providing construction management and inspection services for this $23.2 million multiple roadway restoration project in the Wallingford and Green Lake areas. The project includes work on N 40th, N 50th, W & E Green Lake Drive N and E, Green Lake Way N, Green Lake Drive N, and N 80th Street. Work consists of roadway panel replacement; grind and overlay; 550 curb ramps; new, enhanced, or upgraded bike lanes; sidewalk repair and replacement; new signals and lighting; and SPU utility improvements. The project has over 150 traffic control plans and involves TESC measures.

124th Avenue NE - NE Spring Boulevard to NE Ichigo Way

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Client: City of Bellevue

Location: Bellevue, Washington

2019 - In Progress

KBA is providing construction management services in the BelRed area for the $13 million, quarter-mile first phase of widening 124th Avenue NE from NE Spring Boulevard to NE Ichigo Way. With a nine-month road closure to thru traffic, significant coordination with utilities, businesses, adjacent projects, and the public is required to keep business access open while progressing on contract work. The concurrent Sound Transit East Link work at the bridge site has resulted in changing site conditions. KBA manages the multiple changes by cultivating great relationships with the contractor, design engineer, and the City of Bellevue.

SE 62nd Street Extension

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Client: City of Issaquah

Location: Issaquah, Washington

2017 - 2019

KBA provided full construction management services for the extension of SE 62nd Street from East Lake Sammamish Parkway to Lake Drive. The project constructed a connecting roadway and two roundabouts, a multi-use trail connection, and sidewalks. Significant coordination with utilities, businesses, and the public was required to keep business access open. Before construction began, the contractor proposed to re-design the bridge with 36” diameter pipe piles, 70’ and 90’ long. When bearing resistance was not achieved as expected, KBA coordinated with the geotech, general contractor, designer, and client to revise the plans and solve the issue in real time. KBA established great relationships with all stakeholders, allowing better communication and collaboration to coordinate real-time resolutions to conflicting project demands.

Main Street Enhancement

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Client: City of Bothell

Location: Bothell, Washington

2017 - 2018


Working as a part of a blended City team, KBA provided construction management and inspection support for this $5.7 million project that revitalizes Main Street. The project made a major contribution to the economic health of downtown Bothell, particularly after the area suffered through a major fire affecting businesses in 2016. The Main Street Enhancement Project constructed a pedestrian-friendly downtown urban center by reworking the entire streetscape that included straightening the street’s curved alignment, adding a new curbless street system with removable bollards, and unique flex zone grading increased pedestrian mobility, facility usage, and corrected existing drainage problems.

3rd Avenue Arterial Asphalt and Concrete (AAC)

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Client: Seattle DOT

Location: Seattle, Washington

2017 - 2018


This $5.8 million project included complex elements that required effective communications between SDOT, SPU, and contractor. Working with SDOT Public Outreach was also a key element of the project. To reduce impacts to public, SDOT requested the project be accelerated by cutting 25 working days from the 190 working days allowed in the contract. KBA worked with the contractor, King County Metro, and SDOT to “clear the path” of “speed bumps” that could slow progress. Buried remains of an old railroad trolley alignment was found along 75% of the project. Complicating the removal of this debris was its location over SPU’s water main, which has vibration restrictions within a 20-foot horizontal zone. We were able to work with the contractor to revise their removal of this pavement zone to minimize the cost of this changed condition and not impact working days.

Central Avenue S Pavement Preservation and Utility Improvements

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Client: City of Kent

Location: Kent, Washington

2015 - 2018


KBA provided construction management and inspection services on this $5.8 million federally funded pavement preservation and utility improvement project. Project work consisted of installing new curb, gutter, and sidewalk; pavement repair, grinding, and overlay; cast-in-place sewer lining; waterline installation; electrical conduit trenching and installation; and signal loop installation.



SR 522 West, Phase A (61st Avenue NE to 65th Avenue NE)

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 Client: City of Kenmore

Location: Kenmore, Washington

2014 - 2018


KBA provided construction management and inspection services for this $10 million project that included widened travel and Business Access and Transit (BAT) lanes, additional turning lanes at the key intersection (61st/SR 522), signal improvements, illumination, ADA access management, retaining walls, center medians, sidewalks, drainage improvements, landscaping, and utility conversion to underground. Work also included treatments to the Burke-Gilman Trail, building a new traffic signal, and improving the pedestrian crossing.

Porous Concrete Parking Lot - Department of Ecology (DOE)

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Client: City of Burlington

Location: Burlington, Washington



KBA provided construction management and inspection services for the installation of pervious concrete parking lot on S. Spruce Street, including the construction of gravel shoulders along Hazel Avenue and gravel shoulders along Regent Street. This $ 1.6 million project provided parking made from pervious concrete as part of a Low Impact Development demonstration project with grants by the Washington State DOE. Pervious concrete allows stormwater to flow right through and enter the ground, reducing runoff and pollution. The site also included two rain gardens that provide treatment and infiltration for the stormwater from the adjacent street. KBA coordinated with City staff, the contractor, and Skagit County PUD; maintained comprehensive contract administration documentation; and documented construction activities.

SR 99 Aurora Corridor Improvements

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Client: City of Shoreline

Location: Shoreline, Washington



KBA provided on-site construction management and inspection services for the multi-phase $52 million Aurora Corridor Improvements project, which improves and enhances three miles along heavily-traveled Aurora Avenue North (SR 99) in Shoreline. Managing the flow of traffic through the project area is a significant priority and the KBA CM team’s excellent communication and coordination efforts with the City of Shoreline, SPU, SCL, the contractor, and other affected parties are instrumental in facilitating the smooth flow of traffic while keeping the project on schedule.

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