Every fact below links to its source. Informational only. Ownership statements are limited to primary announcements and filings.
- Headquarters
- Tuscaloosa, Ala., as listed by ENR in the 2026 Top 500 Design FirmsSource: enr.com/toplists/2026-top-500-design-fi…
- Founded
- 1964Source: ttlusa.com
- Website
- ttlusa.comSource: ttlusa.com
- Ownership type
- Ownership not published
Legal name, DBA and former names
- TTL Inc.Source: ttlusa.com
Identifiers (UEI, state registrations)
- Texas TBPELS firm no. 7725, 12622.Source: tbpedownloads.s3-us-west-2.amazonaws.com/roster_firm.zip
Services and markets
- TTL provides transportation design and CEI, civil engineering, geotechnical engineering, environmental consulting, construction materials engineering and testing, and surveying, GIS, and mapping services for public and private clients.Source: ttlusa.com
Leaders
- Dean McClure, Chief Executive Officer (CEO) and Chairman of the Board.Source: ttlusa.com/people
Licences (board records)
- Texas TBPELS roster lists TTL Corp. (firm no. 7725, type SP, expires 2027-07-31); TTL, Inc. DBA TTL Consulting Inc. (firm no. 12622, type NS, expires 2028-07-31)Source: tbpedownloads.s3-us-west-2.amazonaws.com/roster_firm.zip
DOT prequalification
- TxDOT Active Precertified Firms lists TTL, INC. with 34 areas of certification, renewal status JANUARY 9, 2024 ( ACTIVE )Source: dot.state.tx.us/des/precert/precrt13.htm
Public filings
- DOL Form 5500 filings, plan year beginning 2024-01-01, NAICS 541330: TTL, INC. 401(K) PROFIT SHARING PLAN (ACK_ID 20251013164915NAL0001732737001, 491 active participants)Source: dol.gov/agencies/ebsa/about-ebsa/our-ac…
Rankings and awards
- Listed in the ENR 2026 Top 500 Design Firms.Source: enr.com/toplists/2026-top-500-design-fi…
Sources of record
- https://www.ttlusa.com/
- https://tbpedownloads.s3-us-west-2.amazonaws.com/roster_firm.zip
- https://www.enr.com/toplists/2026-top-500-design-firms-3
- https://www.ttlusa.com/people
- https://www.dot.state.tx.us/des/precert/precrt13.htm
- https://www.dol.gov/agencies/ebsa/about-ebsa/our-activities/public-disclosure/foia/form-5500-datasets
Ownership tag: Ownership not published. Profiles are informational, compiled from public sources linked above. Firms may request corrections. A listing is not an endorsement.
