Northern Arizona University

What you'll study

The PhD curriculum combines advanced coursework, original research and professional development. Students take advanced topics in core civil engineering areas and tailor electives to their research focus. Typical subject areas include:

• Structural engineering: advanced structural analysis, dynamics, seismic design and finite element methods.
• Geotechnical engineering: soil mechanics, foundation engineering, slope stability and site characterisation.
• Water resources and environmental engineering: hydrology, hydraulics, water quality, and contaminant transport.
• Transportation engineering: traffic and mobility analysis, pavement systems and infrastructure resilience.
• Construction materials and infrastructure systems: advanced materials, deterioration processes and sustainable design.
• Computational and experimental methods: numerical modelling, data analysis, laboratory testing and field instrumentation.

Programme structure normally includes a combination of advanced coursework, a qualifying or comprehensive examination, and a sustained period of original research leading to a doctoral dissertation. Students participate in seminars, present research, and often gain teaching experience. Research topics reflect faculty expertise and may involve laboratory testing, field studies in the varied environments around Flagstaff and Northern Arizona, computational simulation, and interdisciplinary collaborations.

Entry requirements

Applicants are expected to hold a relevant master’s degree in civil engineering or a closely related discipline, with a demonstrated record of academic achievement and research potential. Typical application materials include:

• Official academic transcripts showing graduate-level preparation in engineering.
• A curriculum vitae or résumé outlining research, academic and professional experience.
• A statement of research interests or research proposal describing intended PhD direction and potential faculty mentors.
• Letters of recommendation from faculty or professional supervisors who can speak to research ability and preparedness for doctoral study.
• Proof of English language proficiency for applicants whose first language is not English, in accordance with university requirements.

Successful applicants typically have prior research or project experience, relevant technical coursework, and clear alignment with faculty research areas. Specific admission criteria and procedural details are set by the university and the School of Engineering; prospective students should consult the department for precise guidance.

Career prospects

Graduates with a PhD in Civil Engineering pursue a range of careers that leverage deep technical and research skills. Common paths include:

• Academic positions as university faculty and researchers, leading teaching and independent research programmes.
• Research scientist or technical specialist roles in industry R&D, focusing on advanced materials, structural systems, geotechnical solutions or water management technologies.
• Senior engineering and leadership roles in consulting firms, infrastructure owners and contractors, and multidisciplinary project teams.
• Positions in government agencies and public-sector laboratories involved in transportation planning, environmental protection, water resources, and infrastructure resilience.
• Roles in non-profit organisations and international bodies dealing with sustainable development, disaster mitigation and community infrastructure.

The PhD also prepares graduates for entrepreneurial ventures, technology transfer, and leadership in multidisciplinary research centres.

Why study at Northern Arizona University

Northern Arizona University offers a research-intensive environment with relatively small doctoral cohorts that enable close mentorship from faculty across civil engineering specialties. The university’s location in Flagstaff and its proximity to diverse geological and climatic regions provide strong opportunities for field-based research in geotechnical, water resources and environmental engineering. Faculty projects frequently span experimental, computational and applied field studies, and there are collaborations with regional transportation agencies, utilities and federal research partners.

Doctoral students benefit from access to campus laboratories, instrumentation and computing resources as well as opportunities for interdisciplinary work across sustainability, forestry, geology and environmental science. NAU emphasises student development through seminars, conference attendance, teaching experience and professional engagement, supporting graduates as they move into academic, research and leadership roles in civil engineering.