Bridges

Design and construction of bridges that allow safe passage over water bodies, valleys, or other physical obstacles.
Use of various materials such as steel, concrete, and timber in bridge construction.

Roads

Planning and designing of roadways to ensure safe and efficient transportation of people and goods.
Excavation, grading, paving, and other activities involved in constructing new roads.

Highways

Development of high-speed, limited-access roadways that connect cities and region.
Installation of various highway components such as bridges, interchanges, and toll plazas