Civil Engineering

Last updated: August 7, 2026

What is civil engineering?

Civil engineering involves designing, constructing, monitoring, operating, and maintaining infrastructure projects and systems in the public and private sectors. Infrastructure projects include the building of roads, railways, airports, culverts, bridges, waterworks, and sewage disposal systems.

Civil engineers and consultants use civil engineering design software to draft technical designs, simulate and analyze them, and estimate the costs of building and maintaining infrastructure over time.

How does civil engineering work?

Civil engineering work moves through five stages: planning and feasibility, design, construction, operation, and maintenance. Each stage hands off concrete deliverables to the next.

• Planning and feasibility: Engineers assess the site, study regulations, and confirm the project is technically and financially viable before design begins.
• Design: Engineers produce technical drawings and 3D models, run load calculations, and simulate how the structure will perform before construction starts.
• Construction: Engineers supervise the build, confirm materials meet strength requirements, and check the work against the approved design.
• Operation: Once built, the infrastructure enters regular use, and engineers monitor its performance, capacity, and safety.
• Maintenance: Engineers inspect, repair, and upgrade the infrastructure over its lifespan to keep it safe and functional.

What are the 7 types of civil engineering?

Civil engineering is made up of seven types: structural, transportation, water resources (hydraulic), environmental, geotechnical, construction engineering and management, and surveying and geomatics.

• Structural engineering: Analyzes the rigidity and stability of buildings, bridges, and other load-bearing structures, using civil engineering software to model how a design holds up under stress before it's built.
• Transportation engineering: Plans, designs, and operates road, rail, and air transportation systems, running simulations on vehicle and pedestrian movement to build safer, more efficient networks.
• Hydraulic (water resources) engineering: Manages how water and sewage flow through a system, designing dams, stormwater systems, and water-supply networks with the help of hydraulic modeling software.
• Environmental engineering: Protects public health and ecosystems by designing pollution-control and sustainability systems, modeling environmental impact before ground is broken on a project.
• Geotechnical engineering: Studies how soil and rock respond to water and structural load, so engineers can design stable foundations and earthworks for what gets built on top of them.
• Construction engineering and management: Coordinates a project's schedule, budget, and on-site safety from groundbreaking through completion, a distinct role from design that's often handled by the same firm.
• Surveying and geomatics: Maps land boundaries and topography before construction starts, increasingly feeding drone and GIS data straight into a project's design software.

Civil engineering vs. architecture: which one designs buildings?

Architecture designs the occupied buildings people live and work in, balancing function with aesthetics, form, and how a space feels to use. Civil engineering designs the fixed, often outdoor infrastructure that supports daily life, such as roads, bridges, and water systems, prioritizing function, safety, and load-bearing performance over appearance. On a building project, the two overlap: an architect typically leads the design, and a civil engineer confirms the structure holds up.

What is civil engineering used for?

Civil engineering shows up anywhere the public depends on shared infrastructure: roads and transit networks, water and sanitation systems, the buildings people occupy, underground infrastructure like tunnels, and the large-scale developments that combine all of them.

• Roads and transit networks: Highways, railways, and bridges that connect communities, plus airports and seaports that move people and goods at scale.
• Water and sanitation systems: Treatment plants, sewage networks, and stormwater systems that keep a community's water supply safe.
• Buildings: The structural engineering behind homes, offices, hospitals, and other occupied spaces, typically built in partnership with architects.
• Underground infrastructure: Tunnels and metro systems that route people and utilities below street level.
• Large-scale development: Master-planned communities and smart-city projects that combine several types of civil engineering into a single build.

What does civil engineering software do?

Civil engineering software supports five core capabilities: producing technical drawings and 3D models, managing a project's lifecycle, conducting land surveys, running safety and compliance calculations, and enabling real-time collaboration.

• Design and documentation: Engineers use the 3D modeling features in civil engineering design software and BIM software to generate design and construction documentation, then adjust variables to meet client specifications.
• Project management: The software gives engineers and construction managers project-wide insight they can use to manage a build from start to finish.
• Surveying: The software helps assess a 3D landscape by collecting geographic data, such as the distance between survey points, and turns that data into technical drawings.
• Safety and compliance: The software runs the calculations behind structural and safety standards, so engineers can catch design flaws and redesign quickly without compromising accuracy.
• Collaboration: Teams access shared 3D models on a cloud platform in real time, so on-site and field teams work from the same blueprints, drafts, and survey data.

Popular civil engineering software includes Civil 3D, AutoCAD, Revit, MicroStation, OpenRoads Designer, and STAAD.Pro.

Frequently asked questions about civil engineering

Here are quick answers to common questions about civil engineering.

What industries hire civil engineers the most?

Civil engineers are hired most by construction and engineering consulting firms, along with government public works and transportation departments. Many also build careers in infrastructure development, environmental agencies, project management, or academic research.

What does a civil engineer do on a construction project?

A civil engineer is the technical link between a project's design and its execution: reviewing drawings against real site conditions, coordinating with contractors and architects, signing off on inspections, and resolving problems that come up once work is underway.

Civil engineering vs. mechanical engineering, what's the difference?

Civil engineering designs and builds fixed, large-scale infrastructure, such as roads, bridges, and buildings, with a focus on structural loads and environmental conditions. Mechanical engineering designs and maintains machines and mechanical systems, such as HVAC equipment and vehicle engines, and deals more with moving parts than fixed structures.

Ready to compare tools? Browse civil engineering design software on G2 and see how the products covered in this guide stack up in real user reviews.