Prestressed concrete bridges over estuarine and coastal rivers and canals, interchange flyovers, box culverts and road tunnels – from geological and hydrological data to design documents and construction testing.
6 representative projects completed
Scope of activities
- Prestressed bridges over coastal rivers and canals
- Flyovers at grade-separated junctions with national roads
- Bridges and approach roads linking islands to the mainland
- Bridges and culverts on widened national roads
- Box culverts protecting oil pipelines
- Road tunnels
- Geological and hydrological survey at piers and abutments
- BIM models for road sections that include bridges
Most of the bridges in TDC's portfolio stand in the estuarine and coastal areas of Ba Ria – Vung Tau: the Cua Lap Bridge; the Vam Gui and Rach Muong bridges on the Cai Mep – Thi Vai inter-port road; the flyover at the National Road 51 interchange on Road 991B; and the bridge and road linking Go Gang Island with Long Son Island. Alongside these are bridges and culverts on National Road 55, and prestressed reinforced concrete bridges on the West Ring Road of Buon Ma Thuot City. Every structure starts from topographic, geological and hydrological data collected on site by the Company's own survey teams.
Field data
- Topographic survey with drones (Flycam) and GPS RTK; geological and hydrological survey right at the bridge site.
- Comparison of location, span and structural options from the feasibility study stage.
Structural design
- Technical design, construction drawings and cost estimates for reinforced and prestressed concrete bridges.
- Design of interchange flyovers, box culverts and cross-road culverts; revised design documents when a package or its scale changes.
- BIM models (Civil 3D, Revit, InfraWorks) for road sections that include bridges.
Testing
- Testing of materials and structures at the Company's own LAS-XD HCM.013 laboratory.
Experience and capability
Bridge structures are analysed with MIDAS and foundations and soft ground with PLAXIS; the whole process, from survey and design to testing, runs under the ISO 9001:2015 quality management system.
Completed projects
projects
| No. | Project name | Project owner | Stage of involvement |
|---|---|---|---|
| 1 | Design review (flyover) for the widening of the My Xuan – Toc Tien road (from the 105 ha resettlement area to the Hac Dich – Toc Tien – Chau Pha road) (2025) | Phu My Ward Construction Investment PMB | Construction drawingsDesign review |
| 2 | Survey and construction drawing design, Contract Package No. 5 on NH55 (Dai Bridge, Trong Bridge, Nhan 1 Culvert, Nhan 2 Culvert, Suoi Da) | Huong Giang JSC – Ministry of National Defence | SurveyConstruction drawings |
| 3 | Geotechnical survey for the technical design and cost estimate stage, and construction drawing design, Road 991B from NH51 to the downstream area of Cai Mep Port, BRIDGE SECTION | Cai Mep – Thi Vai Inter-port Road Project Management Unit | SurveyTechnical designConstruction drawings |
| 4 | Topographic, geotechnical and hydrological survey of Vam Gui Bridge, Cai Mep – Thi Vai inter-port road project, Section 1 (Km0+000 -:- Km1+898,03) | Tan Phat JSC | Survey |
| 5 | Topographic, hydrological and geotechnical survey under the consultancy package for survey, technical design, construction drawing design and cost estimate of the box culvert protecting the oil pipeline of Phu My Power Plant and of Rach Muong Bridge (within inter-port road section 7) | Major Bridge and Tunnel Design Consultancy JSC | SurveyTechnical designConstruction drawings |
| 6 | Survey and construction drawing design, revised Contract Package No. 04 (prestressed reinforced concrete bridge at Km13+475 and the bridge approach roads over Km13+100 -:- Km13+650), Western Ring Road, Buon Ma Thuot City (2010) | Buon Ma Thuot City Projects Management Unit | SurveyConstruction drawings |