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You are here: Home / Archives for Cost estimation

Cost estimation

Highway Engineer

The Roadway Design Engineer prepares plans and specifications for roadway construction and improvement projects. Before a road structure can be designed, the Engineer must determine the exact route the road will take, how many lanes are needed, how this road interfaces with other roads, and how the flow of traffic will be maintained. Design of the roadway system involves many considerations including safety, parking, traffic calming, pedestrian and bike paths, drainage, highway signs, road markings, signal systems, roadway lighting, impact attenuators, and guide rails. The Roadway Design Engineer conducts traffic studies, participates in public meetings, writes technical reports, and conducts construction analyses.

Other responsibilities typically include:

  • Performing roadway geometric design for horizontal and vertical alignment from preliminary to final design.
  • Preparing technical designs in accordance with design standards using roadway design software.
  • Preparing plan and specification documents including base sheet, details, quantities, special provisions, and estimates.
  • Coordinating with reviewers to ensure accuracy and quality of work.
  • Managing and maintaining project documentation.
  • Design systems or structures using sustainable materials, such as porous pavement or bioretention structures.
  • Preparing design for drainage and runoff.
  • Preparing designs that do not damage natural plant and wildlife environments.

Pavement Engineer

A Pavement Engineer designs, evaluates and manages asphalt and concrete pavement systems. The Engineer determines the pavement layer thicknesses and material composition required based on the traffic load. The Engineer collects and reviews data on existing pavements to assess deterioration and remaining service life. They understand how external conditions change the rate of pavement degradation over time. The Pavement Engineer sets the immediate and long-term repair and maintenance strategies.

Other duties typically include:

  • Design pavements according to the AASHTO Mechanistic-Empirical Pavement Design Guide (MEPDG).
  • Develop specifications for pavement construction projects.
  • Observe pavement construction and collect material samples for quality testing.
  • Test pavement materials to determine compliance to specifications or standards.
  • Inspect completed roadways to ensure safety and compliance with applicable standards or regulations.
  • Analyze nondestructive falling weight deflectometer (FWD) deflection measurements.
  • Work with others to develop pavement rehabilitation plans and designs.
  • Work with others to implement a pavement management system.
  • Reviewing concrete and asphalt Superpave mix design data.
  • Design drainage, erosion, or sedimentation control systems for transportation projects.
  • Develop plans to deconstruct damaged or obsolete roadways or other transportation structures in a manner that is environmentally sound or prepares the land for sustainable development.

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Bridge Design Engineer

A Bridge Design Engineer conducts structural analysis to ensure the strength and safety of highway structures, prepares structural design and contract documents including drawings, specifications, and estimates, participates in preparing the project budget and schedule, participates in meetings with clients and project team members, and reviews the structural calculations and contract documents prepared by others. A Bridge Design Engineer may be the principal design engineer on a project or the assistant design engineer on large, complex projects. 

Other responsibilities typically include:

  • Develop designs for other highway structures such as sign bridges and lighting supports.
  • Analyze damaged bridges.
  • Assess structural adequacy of existing bridges to withstand stresses due to oversized or overweight truck stresses to prevent damage or a bridge collapse.
  • Prepare designs to upgrade an existing bridge by widening the deck, raising the deck, or strengthening the structure.
  • Assess design related construction problems and erection schemes.
  • Update bridge standards.
  • Carry out design investigations of cranes, hoists, and similar apparatus used on bridge and highway maintenance to ensure structural stability and safety of operators.

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