Specialized Bridge Design 

& Construction Engineering

McNary Bergeron & Associates


Our Engineered Construction approach identifies design and construction issues that we can address with innovative solutions through Construction Engineering, Design, Pre-Bid and Expert Services.

We are experts

at solving complex design challenges

Norridgewock Bridge

Construction Engineering

Our construction engineering services includes working closely with the contractors to incorporate the preferred means and methods, through design modifications, construction analysis, shop drawings, geometry control, erection manuals and technical support during construction.

Precast & Cast-in-place Segmental Concrete

Complex Steel Tubs & Girders

Arches - Concrete and Steel

Cable Stayed Structures

Conventional Concrete and Steel

Girder Erection Plans, Erection Equipment, and Systems

Heavy Lifts and Rigging

Bridge Moves by Self-Propelled Modular Transporters (SPMT) and Float-In on a Barge

Trestles and Temporary Bridges

Gantry and Form Traveler Checks, Kinematics and Design

Jeremiah Morrow Bridge

Design Engineering

Our design engineering includes supporting Design-Bid-Build (DBB), Design-Build (DB), Construction Manager / General Contractor (CM\GC) and Private-Public-Partnership (P3) projects for owners and design firms. These services include:

Complex Bridge Design

Conventional Bridge Design

Pedestrian Bridge Design

Constructibility Review

Independent Design Checks

Peer Review

Value Engineering

Bridge Load Ratings

St. Croix Crossing Bridge Construction

Pre-Bid Engineering

We often work closely with contractors during pre-bid for a bridge to help identify how to construct the project and identify innovative erection schemes and method to help the contractor win the project.

“Brain Storming” / Answering Questions

Erection Schemes and Methods

Precasting Methods


Alternative Erection Schemes

Constructibility Changes

Redesign / Value Engineering

Our Projects

Expert Services

Based on our extensive experience with both the construction and design of complex bridges, we can provide expert services:

Dispute Review Board

Expert Reports

Forensic Engineering