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Bearing Pads: Laminated, PTFE or Plain
Silicone Grease: for Bearing Pads
Conduit: Galvanized Rigid/PVC
Welded Steel Pipe
Rapid Setting Concrete Patch
Ductile Iron Pipe / Casing Pipe
Bridge Deck Drainage Systems
Misc. Metals / Cable Restrainers
Soffit Access Covers / Grates / Barrier Rail
Expansion Joint Seals
Grated Line Drains
Waterproofing Materials
Drainage & Irrigation Materials
Site Furnishings
NPS Water Supply Line: 2"-6" System
Electrical Supplies / Water Meters
Erosion Control
Crash Cushions
Plywood / Formply / Falsework Lumber
Precast Concrete Items:
Pipe Supports, Benches, Signs, Tables, Bollards, Culverts, etc.
Spherical Bearings / Disk Bearings
Contact Adhesive: CalTrans approved
Steel Beams / Steel Pipe Pile
Polyester Concrete / Methacrylate Misc.
Misc. Construction Materials
Epoxy / Grout / Geofoam (EPS)
Timber Lagging, HDPE Shims
Ground Anchors / Soil Nails / Tiebacks /
PT Strand
Geocomposite & Geogrid Material
Welded Wire Mesh, Post Tension Wire
Pipe Key-Shear Key
Anchor Bolts / Headed Studs / Nails
Formliner / Architectural Treatment
Reinforced Pipe & Manholes
Metal Beam Guard Rail
Bridge Railing 
Chain Link Fence
Carbon Fiber Material: Strips & Sheets
Diamond Blades

Don't see what you need? We'll work with you - contact us today!



Rupert Construction Supply was founded by Karen Wonnenberg in 2002. Karen's understanding of the materials needed, her competitive pricing, prompt delivery and excellent customer service allowed the one-woman business to rapidly develop into what it is today.


In 2023, Nick Herrera joined the team after spending 7 years in mechanical engineering and commercial building automation.  Together, they have continued to foster a culture that strives for excellence and customer satisfaction.  Specializing in bridge, retaining wall, and other permanent materials, Nick, Karen, and their staff work tirelessly to quote and deliver materials for your construction projects.

Rupert Construction Supply has several certifications making it a valuable resource for construction companies bidding public works projects around the State of California:

•Disadvantaged Business Enterprise (DBE) #32785
  certified by California Unified Certification Program (CUCP)

•Small Business Enterprise (SBE) #1792892
  certified by California Department of General Services (DGS)


•Small Business Enterprise (SBE) #20149931  certified by Los Angeles County Metropolitan Transportation Authority (LA Metro)


SMUD SEED (Supplier Education and Economic Development) Vendor verified by DGS & Sacramento Municipal Utility District

•Public Works Contractor #1000008293
  registered with CA Department of Industrial Relations (DIR)



Year Established


Nick Herrera - Owner

Office: 925-229-5577 x6

Mobile: 402-218-3700

Karen Wonnenberg

Office: 925-229-5577 x1

Mobile: 925-963-4054

Stacy Monroe - Sales & Account Manager

Office: 925-229-5577 x3

Business Hours

Monday - Friday 8:00am - 3:30pm

Phone: (925) 229-5577

Warehouse Location

12405 Gold Flake Ct.

Rancho Cordova, CA 95742

Mailing Address

3941 Park Dr., Ste. 20-487

El Dorado Hills, CA 95762-4549

Eleanor Meaden - Account Manager

Office: 925-229-5577 x4

Caitlin Silkman - Bookkeeper & Office Manager

Office: 925-229-5577 x2

Michele Ternes - Special Projects Coordinator

Office: 925-229-5577 x 5

On The Job
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