Roeder Avenue Bridge Construction Administration

Roeder Avenue Bridge Construction Administration City of Bellingham

Central Avenue Improvements

Central Avenue Improvements City of Bellingham

Inspection, Load Rating and Bridge Rehabilitation

Inspection, Load Rating and Bridge Rehabilitation City of Bellingham

Old 99 (Riverside Drive) Improvements

Old 99 (Riverside Drive) Improvements Cities of Mount Vernon & Burlington

I-405 South Bellevue Design/Build Project

I-405 South Bellevue Design/Build Project WSDOT

Middle Fork Bridge Rehabilitation Construction

Middle Fork Bridge Rehabilitation and Construction Management, City of Bellingham

  • Sound Transit Lakewood Layover Yard

    Friday, 23 September 2011 00:00
  • Broadway Avenue Bridge Replacement

    Thursday, 22 September 2011 00:00
  • Roeder Avenue Bridge Construction Administration

    Thursday, 15 September 2011 06:46
  • Central Avenue Improvements

    Thursday, 15 September 2011 06:40
  • Inspection, Load Rating and Bridge Rehabilitation

    Thursday, 15 September 2011 04:29
  • Old 99 (Riverside Drive) Improvements

    Thursday, 15 September 2011 03:55
  • I-405 South Bellevue Design/Build Project

    Thursday, 15 September 2011 03:47
  • Middle Fork Bridge Rehabilitation Construction

    Thursday, 15 September 2011 03:22

Kash Nikzad, Ph.D, PE

Kash Nikzad is the managing principal at TranTech Engineering and is directly involved in most of the firm’s projects. He is a skilled project manager and is known by clients for his positive attitude, attentive client communication, and effective team leadership. Kash has more than 20 years of experience that includes transportation-related structural analysis and design, load rating, seismic analysis, research and retrofit recommendation, and construction supervision and inspection for various types of concrete, timber, and steel bridges. He is regularly involved in all phases of design and construction for transportation projects with bridge structures in Washington and is very familiar with WSDOT guidelines. Kash’s experience encompasses feasibility study/TS&L reports, PS&E packages, contract documents, and construction support, as well as bridge load ratings, varying from complex steel truss to simple one-span bridges. Kash has contributed technical papers to well-known civil engineering journals and conferences and has written two reports on earthquake damage assessment for the EERI newsletter. His work as a member of PCI’s seismic design subcommittee yielded a report on state-of-the-art guidelines: “Design of Bridges with Precast Components for Seismic Hazard."


PhD, Civil Engineering (Structural), University of Illinois at Urbana-Champaign, 1992
MS, Civil Engineering (Structural), University of Washington, 1983
BS, Civil Engineering, University of Washington, 1981


Professional Civil Engineer:
WA #36927
AK #10294
CA #62931
WA Certified Bridge Condition Inspector, #G0308

Industry Tenure

20+ years

Project Experience

City of Tacoma, Tacoma Avenue South Bridge Rehabilitation | Tacoma, WA

Project Manager/Structural Engineer. Leading the design for the rehabilitation of this 333-foot-long and 50-foot-wide bridge located in south Tacoma. The bridge, constructed in 1930, crosses a live Sound Transit main line and Tacoma Way South. It is currently being designed for repair of the localized heavy corrosion on the existing steel elements and replacement of the exterior girders to accommodate a five-foot widening. Interesting features include replacement of both exterior girders and usage of lightweight concrete for decking. This project is federally funded through BRAC. Construction is planned for 2014.

City of Everett, Broadway Avenue Bridge Replacement | Everett, WA

Project Manager. Currently leading the design of a replacement for the Broadway Avenue Bridge, which is 100 feet long and 100 feet wide. The bridge carries five lanes of traffic and two sidewalks over the BNSF Railroad main line and a Sound Transit rail line. Prepared a TS&L report that provided three options for the bridge replacement. Currently preparing the design of the chosen alternative, a three-span bridge with a precast, pre-stressed slab superstructure.

City of Lakewood, SR 99 Overpass Rehabilitation | Lakewood, WA

Project Manager. Led this bridge rehabilitation project that consisted of adding five-foot sidewalks and throw fence to this overpass that carries the SR 99 facility over BNSF tracks.

Skagit System River Cooperative, Illabot Creek Bridge Design Project | Skagit County, WA

Project Manager. Led this salmon habitat restoration project that includes restoring Illabot Creek to its historic channel location(s), removing portions of existing dikes bordering the current channel, building bridge(s) for the Rockport-Cascade Road that spans the historic channels, and allowing the stream to flow through one or more channels as it migrates over time. River engineering design tasks include flow control upstream of the bridge site, hydrology, hydraulics, and channel restorations and modifications.

City of Bonney Lake, SR 410 Wall Design | Bonney Lake, WA

Project Manager/Senior Structural Engineer. Designed approximately 1,500 feet of wall along SR 410. Wall types included SEW and soldier pile walls up to 20 feet in height.


TranTech Bridge Projects Requiring Overcrossing BNSF Railway Tracks

Structural Engineering:
TranTech's structural engineering group provides comprehensive services for structural design of bridges; highways and other industrial facilities. We also provide services in the areas of seismic retrofit, structural condition inspection and load rating of bridges.

Civil Engineering:
TranTech’s civil engineers provide comprehensive services for roadway design; drainage & stormwater treatment; traffic signals and illumination design.

Construction Management:
TranTech’s construction administration team provides services in the areas of contract administration, construction inspection and materials testing coordination and management, resident engineering, contractor work coordination.