TTL, Inc.
Nashville,
Tennessee
View Accreditation Certificate
Tyler
Hughes
624 Grassmere Park
Suite 14
Nashville
,
Tennessee
37211
Phone: (931) 510-9855
Fax:
tyler.hughes@ttlusa.com
https://http://www.ttlusa.com
Quality Management System - accredited since 11/22/2010
R18, C1077 (Aggregate), C1077 (Concrete), D3666 (Aggregate), D3666 (Asphalt Mixture), D3740 (Soil), E329 (Aggregate), E329 (Asphalt Mixture), E329 (Concrete), E329 (Soil)
Asphalt Mixture - accredited since 3/23/2020
R47, R68, R97, T30, T164, T166, T209, T245, T269, T355, D979, D2041, D2172, D2726, D2950, D3203, D3549, D5444, D6926, D6927
Soil - accredited since 11/22/2010
R58, T88, T89, T90, T99, T180, T193, T208, T265, T310, D421, D422, D698, D1140, D1557, D1883, D2166, D2216, D2487, D2488, D4318, D6938
Rock - accredited since 3/23/2020
D3967, D4543, D7012 (Method C)
Aggregate - accredited since 11/22/2010
R76, T11, T19, T21, T27, T84, T85, T112, T255, C29, C40, C117, C127, C128, C136, C142, C566, C702
Concrete - accredited since 7/10/2014
M201, R60, R100 (Beams), R100 (Cylinders), T22, T97, T119, T121, T152, T196, T231 (7000 psi and below), T309, C31 (Beams), C31 (Cylinders), C39, C78, C138, C143, C172, C173, C231, C511, C617 (7000 psi and below), C1064, C1231 (7000 psi and below)
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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