Thunderhead Testing LLC
Bixby,
Oklahoma
View Accreditation Certificate
Cynthia
Lynn
7224 E. 151st S.
Suite A, B, C
Bixby
,
Oklahoma
74008
Phone: (918) 864-5160
Fax:
cynthia@thunderheadtesting.com
http://www.thunderheadtesting.com
Quality Management System - accredited since 3/5/2012
R18, C1077 (Concrete), D3666 (Aggregate), D3666 (Asphalt Mixture)
Asphalt Mixture - accredited since 3/5/2012
R30, R35, R47, T30, T166, T209, T269, T283, T308, T312, T324, T331, D2041, D2726, D3203, D3549, D4867, D5444, D6307, D6752, D6925, D8225
Soil - accredited since 1/5/2026
D698, D1557, D6938
Aggregate - accredited since 3/5/2012
R76, R90, T11, T27, T84, T85, T100 (Mineral Filler), T176, T255, T304, T335, C117, C127, C128, C136, C566, C702, C1252, D75, D2419, D4791, D5821
Concrete - accredited since 4/10/2026
M201, R60, R100 (Cylinders), T22, T24 (Drilling Cores of Concrete), T24 (Testing Drilled Cores of Concrete), T119, T121, T152, T309, C31 (Cylinders), C39, C42 (Drilling Cores of Concrete), C42 (Testing Drilled Cores of Concrete), C138, C143, C172, C231, C511, C1064, C1231 (7000 psi and below), C1542
Please note that our accreditations do not include an expiration date. An accreditation only expires when the laboratory fails to comply with our accreditation requirements.
* This information is only valid as of 10/27/2026. Please visit https://aashtoresource.org for current accreditation status.
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