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

Green River Pedestrian Bridge Rehabilitation, City of Tukwila

Green River Pedestrian Bridge Rehabilitation
City of Tukwila

TranTech has provided the City of Tukwila the rehabilitation PS&E construction documents for this 170-foot long and 7-foot wide pedestrian bridge.

The Bridge's 2005 inspection report suggests replacing rotted bottom-chord laminations. Also, Floor beams and Stringers are reported to be in State 1 but the stringers are reported to be untreated and weathered.

Based on the Inspection Report, a 3-D truss model was utilized to assess the truss elements. The elements with deterioration were subjected to cross sectional reduction. Next, a Demand to Capacity analysis of the Bridge's primary elements was performed.


TranTech supplied the PS&E construction documents to the City. The Rehabilitation calls for repairs on some rot pockets on the primary truss elements including the bottom chord elements; replacing the deck with a non-skid surface and painting. Recently, the City of Tukwila has authorized TranTech to provide Construction Administration on this exciting project.

As part of the PS&E package, TranTech also provided Coating and Containment specifications which included provisions for initial preparations of the existing timber for coating purposes.

 

 
Services

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.