Consitrans collaborates with many national and international companies, associations, scientific organizations and public entities among which:
- Romanian National Company of Motorways and National Roads
- Local Divisions for Roads and Bridges – Brasov, Iasi, Bucharest, Cluj, Craiova, Timisoara and Constanta
- National Railways Company CFR SA – Regionala CFR Galati, Regionala CFR Timisoara
- Roads Administration Authority, Bucharest
- Bucharest City Hall, 2nd District Hall, 3rd District Hall
- County city councils – Ialomita, Teleorman, Prahova, Dolj, Vrancea, Calarasi
- Local City Councils – Campina, Alexandria, Balotesti
- “Romanian Waters” National Administration – W.B. Buzau-Ialomita, W.B. Siret, W.B. Dobrogea-Litoral, W.B. Mures, WB. Prut-Barlad, W.B. Jiu
- Navrom, CNAPDF Giurgiu, CNAPDM Galati, Santierul Naval Orşova, Aldimasa
- Contractors – Centrala de Constructii Ciii Ferate (CCCF), Agisfor, Zublin Romania, Grasseto, Lavori&itinera, Strabag, Prodeftiki Athena, Max Bugl&CCF, Todinl, Alpine, SoleI Boneh, Porr Technobau, Romstrade, Romprest, Umb Spedition, Politeh’s, lmeva, lridex, Pizarotti, Euroconstruct, Delta ACM
- International Consultants – Louis Berger International, Hyder Consulting Ltd., Typsa (Spain), Etypsa (Spain), lnocsa (Spain)
- Local Designers – lptana Sa Bucureşti, Search Corporation, Trapec Sa, Consilier Construct, Icim, Ispcf Sa Bucureşti, Viacons, Consi, DHV, Egis Tehnologica, Aquaproiect, Alexandrion, Aktor
- Cadastral registration offices – Bucharest, Ilfov, Prahova, Hunedoara, Craiova, Alexandria
- Technical University of Bucharest – the Faculty of Railways, Roads and Bridges
- Professional and Employers’ Associations – Professional Association for Roads and Bridges, ARACO, Romanian Society of Geotechnics and Foundations, Romanian Association of Geosynthetics