What We Offer

Engineering Services

Comprehensive bridge and structural engineering consulting — from design and inspection to rehabilitation and construction support.

Bridge Engineering

Bridge Design & Rehabilitation

With 20+ years of experience in all phases of highway and railroad bridge engineering, Polaris provides design and analysis support for new bridges, widenings, and complex rehabilitation projects. Our work covers steel, prestressed concrete, and cast-in-place concrete structures.

New bridge design — steel plate girders, PSC girders, box culverts, rigid frame culverts
Bridge widening and stage construction engineering
Rehabilitation design — deck replacement, bearing replacement, joint replacement
Steel section retrofit, painting, concrete patching and crack repair
Abutment, pier, footing, and pile foundation design
Substructure design — wall-type abutments, cap & column piers, hammerhead piers
Curved and skewed bridge analysis (MIDAS, CSI Bridge, MDX, DESCUS)
Shop drawing review and construction phase engineering support

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Inspection & Load Rating

NBIS Bridge Inspection & Load Rating

Certified FHWA NBIS Safety Inspector with extensive field inspection and load rating experience across state DOT and transit agency bridge inventories. Polaris provides thorough inspection programs with clear, well-documented deliverables.

NBIS bridge safety inspections — steel, concrete, timber, and culvert structures
Routine, fracture-critical, and underwater bridge inspection
LRFR and LFR load rating analyses per AASHTO MBE
Load rating reports and documentation (AASHTO BrR software)
Bridge condition assessment and prioritization studies
As-built load rating for new construction projects
AREMA load rating for railroad bridge structures
Posting evaluation and overweight vehicle permit review

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Structural Engineering

Structural & Geotechnical Design

Beyond bridges, Polaris provides structural engineering support for transportation-related infrastructure, commercial buildings, and site structures. All designs are code-compliant with ASCE-7, ACI, AISC, and IBC standards.

Retaining wall design — cantilever, MSE, soldier pile with lagging, sheet piles
Commercial rooftop RTU / equipment support framing
Building structural modifications and tenant improvements
Foundation design — drilled shafts, driven piles, spread footings
Highway sign structure design and mast arm signal structures
Noise wall design and replacement
Parking structure inspection and repair design
Airport facility structural inspections

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Construction Engineering

Shoring, Jacking & Construction Support

Polaris provides specialized temporary works design and construction engineering support — helping contractors safely execute complex staged construction operations on bridge and infrastructure projects.

Temporary shoring design — up to 30+ feet retained height
Bridge jacking and blocking plans for bearing replacement
Staged construction engineering and erection analysis
Temporary support towers and falsework design
MIDAS bridge erection stage analysis
Jumper span design for temporary track shifts
Constructability reviews and value engineering
QC/QA plan development and construction plan review

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Commercial Building Structural Engineering

Building Engineering

Commercial Building Design & Engineering Evaluation

Beyond transportation infrastructure, Polaris provides structural engineering design and evaluation services for commercial buildings and facilities. With a background spanning transit stations, airport terminals, and parking structures, we bring a rigorous, code-compliant approach to commercial building challenges.

Structural evaluation and condition assessment of existing commercial buildings
Steel framing design — beams, columns, connections per AISC
Rooftop RTU and mechanical equipment support framing design
Steel joist and roof deck capacity checks and upgrade design
Structural modification design for tenant improvements and renovations
Foundation evaluation, underpinning, and repair design
Building structural inspection and engineering reports
Parking garage structural inspection and repair engineering

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Standards & Codes

Design Standards We Work With

All Polaris deliverables are developed in compliance with applicable federal and state design codes.

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Bridge

AASHTO LRFD
AASHTO MBE
AREMA
FHWA NBIS

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Structural

AISC Steel
ACI 318 Concrete
ASCE-7 Loading
IBC Building Code

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State DOTs

VDOT • MDSHA
NYDOT • NJDOT
ODOT • TDOT
TxDOT • FDOT

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Software

MIDAS • CSI Bridge
AASHTO BrR
SAP2000 • STAAD
ENERCALC • MDX

Engineering Services

Bridge Design & Rehabilitation

NBIS Bridge Inspection & Load Rating

Structural & Geotechnical Design

Shoring, Jacking & Construction Support

Commercial Building Design & Engineering Evaluation

Design Standards We Work With

Bridge

Structural

State DOTs

Software

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