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Bridge Building & Repair

I-5 Bridge Crossing the Columbia River

Westlake provided precise 3D measurements and monitoring for replacement of a cracked trunnion on the I-5 Bridge.

Working from the river bank, we as-built bridge structures for prefabrication of false work and then verified false work alignment and plumb. During replacement of sheaves, we monitored structures and false work for load deformation.

Christie Constructors was able to complete this project in 6 days rather than the 21 days scheduled, and as a result, received a $1.5 million incentive bonus.

Client: Christie Constructors
Owner: Oregon Dept of Transportation


		Photo courtesy of Dan Carter, DJC

Hawthorne Bridge

This landmark bridge crossing the Willamette River was constructed in 1911 and is the oldest operating lift-span bridge in the United States.

For complete rehabilitation of the steel bridge, we provided dimensional control and 3D measurements for prefabrication of new and replacement components. Bridge closure was limited to a one-year period, and construction techniques provided environmental protection for the Willamette River.

Project Services:

Measurements and dimensioning for prefabrication of new steel decking
Measurements for prefabrication of new stringers
Measurements for prefabrication and attachment of floor beam extensions to support a wider sidewalk
Layout for new anchor bolts on piers to support tower
Dimensional measurements for counterweight cable replacement

Client: Abhe and Svoboda Inc.
Owner: Multnomah County, OR

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Bridge Building & Repair

Photo courtesy ofDan Carter, DJC

Photo courtesy of
Dan Carter, DJC