NST has received three additional pre-qualifications and is now pre-qualified by IDOT in all of the following categories:
- Geotechnical Service – General Geotechnical Services
- Special Services – Construction Inspections
- Special Services – Quality Assurance HMA & Aggregate
- Special Services – Quality Assurance PCC & Aggregate
NST has achieved another milestone, kudos to our staff for their hard work and for exceeding the expectations of their clients.