A civil estimator is a construction worker whose duties are to bid on construction projects, assess project budgets, and work closely with management to determine how best to pursue a civil engineering project. These projects can include bridge building, highway construction, or rail construction. As a civil estimator, your responsibilities also include visiting sites, pulling records, and doing research on behalf of the construction company. You make reports to other members of the construction team to determine budgets, financial costs for materials and labor, and what contractors and subcontractors to use for the project.