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Current Blanket Proprietary Certifications

Select link below to view and print Blanket Approval document for design file. 

07/01/19 - 06/30/21 (#19-0011) WSDOT Certified 04/19/19
Statewide Blanket Approval (pdf 117 kb)
Welded Wire Faced Structural Earth Wall

07/01/19 - 06/30/21 (#19-0012) WSDOT Certified 04/09/19
Statewide Blanket Approval (pdf 134 kb)
Rapid Cure Silicone Sealant Expansion Joint System

07/01/19 - 06/30/21 (#19-0013) WSDOT Certified 04/15/19
Statewide Blanket Approval (pdf 141 kb)
Neenah Foundry Roadway and Bridge Deck Drain

07/01/19 - 06/30/21 (#19-0014) WSDOT Certified 04/15/19
Statewide Blanket Approval (pdf 92 kb)
Anvil International Concrete Insert

07/01/19 - 06/30/21 (#19-0015) WSDOT Certified 06/27/19
Statewide Blanket Approval (pdf 117 kb)
ITS Equipment and Software


07/01/17 - 06/30/19 (#17-0010) WSDOT Certified 06/27/17
Statewide Blanket Approval  (pdf,60 kb)
Neenah Foundry Roadway and Bridge Deck Drain

07/01/17 - 06/30/19 (#17-0011) WSDOT Certified 06/03/17
Statewide Blanket Approval (pdf  54 kb)
Hilfiker and Tensar Welded Wire Faced Structural Earth Wall

07/01/17 - 06/30/19 (#17-0012) WSDOT Certified 06/19/17
Statewide Blanket Approval (pdf 49 kb)
Expansion joint sealant systems

11/17/16 - 06/30/19 (16-0020) WSDOT Certified 11/17/16
Statewide Blanket Approval (pdf 1.85 mb)
ITS Equipment and Software

07/01/17- 06/30/19 (#17-0013) WSDOT Certified 06/27/17
Statewide Blanket Approval  (pdf 41 kb)
Anvil International Concrete Insert

07/01/17 - 06/30/19 (#17-0014) WSDOT Certified 06/28/17
Statewide Blanket Approval  (pdf 127 kb)
Slip Resistant Surface for Utility Appurtenances