Condon-Johnson & Associates
Condon-Johnson & Associates is an innovative geotechnical construction contractor that is recognized for designing and building complex foundation systems for commercial, heavy civil and industrial projects throughout the Western United States. Our district offices are strategically located in Oakland, Los Angeles, San Diego, Seattle, and Portland, allowing our geotechnical experts to work closely with local public agencies and private industry to solve challenging design-build projects.
Geotechnical construction services
- Deep foundationsAuger cast piles, displacement piles, drilled shafts, micropiles, tiedowns, precast piles, H-piles, pipe piles, torqued-in piles, low headroom piles
- Earth retentionInternal bracing, secant pile systems, shear pins, sheet piling, soil mixed walls, soil nail walls, soldier pile walls, tieback anchors, horizontal drains, access shafts, underpinning
- Ground improvementDeep soil mixing, stone columns, aggregate piers, drilled displacement columns, rigid inclusions
- GroutingCompaction grouting, jet grouting, permeation and dam grouting, compensation grouting
- DewateringDeep wells, well points, eductor systems
Offices
OfficesProject statesOffice location
- Oakland480 Roland Way, Suite 200, Oakland, CA 94621
- Los Angeles1100 Wilshire Boulevard, Suite 400, Los Angeles, CA 90017
- San Diego10303 Channel Road, Lakeside, CA 92040
- Antioch5091 Lone Tree Way, Antioch, CA 94531
- Seattle9012 S. 208th Street, Kent, WA 98031
- Portland7505 NE Ambassador Place, Suite R, Portland, OR 97220
- Bozeman201 S. Wallace Avenue, Suite B3-B, Bozeman, MT 59715
- Denver7108 S. Alton Way, Building H, Centennial, CO 80012
