Our Services

Transportation Engineering

Our approach to transportation design begins with meticulous study of your unique objectives and concerns …

… In our half-century of transportation engineering, we’ve learned that success demands understanding of every facet of your project: schedule requirements, budget constraints, community impacts, and more. Our experience runs deep—beginning with survey, mapping, and design for the nation's fledgling interstate system in the 1950s. Today, we serve the evolving needs of state DOTs and toll roads throughout the eastern United States. Railroad owners, municipalities, and private ventures also depend on Erdman Anthony’s expertise. For outstanding results on your next bridge replacement or rehabilitation … highway or local street project … or rail assessment and repair recommendations, turn to Erdman Anthony—where the design process won’t begin until the listening process is complete.

Core Business Leader

Richard E. Stees, PLS

Vince Weiser, PE
Sr. Vice President 
One Sterling Place
100 Sterling Parkway, Suite 212 , Mechanicsburg, PA 17050
[P]: 717-766-1741 x5017
[F]: 717-766-5516

Transportation Capabilities

Bridge Replacement and Rehabilitation Design

  • Design for new, reconstruction, and historic projects
  • Specialized bridge structures
  • Super-load evaluations and load ratings
  • Bridge inspection
  • Noise barriers, retaining walls, and large culverts
  • Seismic, fatigue, and vulnerability assessments
  • Hydrologic and hydraulic studies
  • Scour evaluation
  • Erection and construction-phase engineering
  • Environmental permitting

Highways, Expressways, and Local Street Design

  • Main-street revitalization
  • Intersection improvements and safety enhancements
  • Traffic control plans
  • Capacity analysis and traffic signal design
  • Bicycle and pedestrian trails and facilities
  • Pavement evaluation, life cycle, and design
  • Planning and corridor studies
  • Public participation
  • Interchanges (high-speed and local-access)
  • Drainage analysis and design
  • Stormwater pollution prevention plans
  • Accident analysis and evaluation
  • Signing and sign structure design
  • Lighting systems
  • Environmental permitting

Rail Planning and Design

  • Track and right-of-way condition assessment
  • Emergency inspections and repair recommendations
  • Long-term maintenance programming
  • Track reactivation studies
  • Track scales
  • Conveyance and bulk transfer systems
  • Transload and intermodal terminals
  • Locomotive and car maintenance facilities
  • Passenger and freight facilities
  • Mainline, side track, and spur construction/rehabilitation
  • Yard and interchange reconfiguration
  • Bridge and culvert rehabilitation/replacement
  • Drainage improvements, scour evaluation, and washout repair
  • Load capacity and clearance improvements
  • Grade crossings and warning devices
  • Quiet zones

Construction Support Services

  • Construction consultation
  • Design/build
  • Shop drawing reviews
  • Crane layout and coordination
  • Specialty rigging and lifting
  • Bridge erection and demolition
  • Bracing and shoring
  • Sheet piling
  • Soldier piles and lagging
  • Braced and cellular cofferdams
  • Tie-backs or rakers
  • Crib walls
  • Soil nailing
  • Geosynthetic reinforced walls
  • Construction shielding
  • Scaffolding and work platforms
  • Structural analysis and load rating
  • Load testing/nondestructive testing
  • Temporary structures
  • Fall arrest static lines

Water Resources Services

  • Watershed delineation
  • Stream survey
  • GIS data collection
  • Runoff hydrology development
  • One-dimensional floodplain/floodway modeling
  • Two-dimensional floodplain/floodway modeling
  • Floodplain/floodway mapping
  • Flood risk assessment
  • State and Federal floodplain regulatory permitting
  • Bridge/culvert hydraulic analysis & design
  • Scour analysis
  • FEMA Conditional Letter of Map Revision (CLOMR) preparation
  • FEMA Letter of Map Revision (LOMR) preparation
  • Storm drainage system design
  • Open channel analysis & design
  • Stormwater quantity and quality planning
  • Stormwater management analysis & design
  • Erosion and sediment pollution control planning
  • During construction and post-construction stormwater regulatory permitting
  • Dam breach analysis
  • Dam emergency action plans/inundation mapping