Redwood Bridge
Type of Project:
Structural rehabilitation of two-lane thru truss bridge and application of improved steel coating system.
Project Description:
The deck truss system was sand blasted and painted over a 3-year period with special emphasis on structure critical pack rusted joints and connections.
Reason project was undertaken:
To restore structural load capacity, stop crevice corrosion and pack rust, and apply long lasting protective coating to the steel.
Name and location of facility:
Redwood Bridge located over the Red River on Redwood Blvd., between Henderson Highway and Main Street, Winnipeg, Manitoba, Canada.
Project start and completion dates:
April 89 - October 91
Service Environment:
Urban / Marine
Surface Preparation: Methods, degree of cleaning, profile:
SSPC -SP 6, 2 mil profile
Coating application methods, equipment:
Airless spray
Coating system, number of coats, dry film thickness per coat, etc.:
Wet coat Termarust 2200 (RAVCS®) Penetrant Sealer in all joints and connections. Single coat, 10 mils DFT of Termarust 2100 (RAVCS®) Primer/Topcoat on all surfaces.
Safety and Environmental Protection Measures:
Free blasting before lead rules were in effect.
Unusual Job conditions:
Different levels of surface preparation were tested to establish a balance between cost and performance.
Evidence of good performance:
After 10 years, the coating is stable in pack rusted joints and connections.
Why Termarust was used:
Termarust and the contractor provided a 5-year warranty on leakage from pack rusted joints and connections and a minimum 25-year coating system service life.
Owner’s Representative:
Contact: Bill Epenspanger, Engineer
Company: City of Winnipeg
Tel: 204-986-5283
Contractor:
Contact: Maurice Bourbonais
Company: Carlson Decorating & Sandblasting
Tel: 204-233-0671
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