Warren Truss · Camelback

Cambridge Flat Bridge

A Warren truss girder bridge with a parallel (flat) top chord, a sturdy and versatile profile well suited to multi-span urban and rural projects.
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Overview

The U.S. Bridge Cambridge Flat

The U.S. Bridge Cambridge Flat is a Warren truss girder bridge formed by a top chord with a parallel-chord (flat) geometry. This truss eliminates verticals at the top-chord panel points. It has a sturdy look and is a great choice for multiple-span bridges or bridges set in urban or rural settings.
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At a Glance

Cambridge Flat Specifications

These are typical figures. Every U.S. Bridge is custom-engineered and PE-stamped to your project span, width, loading and site. Hover or tap a card for the detail behind each number.
Typical Span
60–250 ft
Bridge Type
Warren truss
Truss geometry engineered for this model.
Roadway Width
Custom
Single to multi-lane; curb or rail options.
Design Loading
AASHTO HL-93 / HS-20
PE-stamped to your jurisdiction.
Connections
All-bolted, CNC-drilled
No field welding required on site.
Finish
Weathering or galvanized
Optional shop-applied paint systems.
Why U.S. Bridge

Engineered to Perform, Built to Last

Every Cambridge Flat is fabricated to the same standards that make U.S. Bridge a trusted partner for DOTs, counties and private developers nationwide.

AISC-Certified Fabrication

Built by an AISC-certified Advanced Steel Bridge Fabricator with Fracture Critical and Sophisticated Paint System endorsements.

All-Bolted, CNC-Drilled Connections

Computer Numerically Controlled drilling delivers precise, all-bolted field connections, with no field welding required on site.

Prefabricated and Shipped Ready

Fabricated in our Cambridge, Ohio facility and shipped as ready-to-assemble components for fast, predictable installation.

Engineered for Longevity

Weathering steel or hot-dip galvanized options resist corrosion and minimize maintenance across a 75+ year design life.

Custom-Engineered to Your Site

Span, width, skew, camber and loading are tailored to your project and stamped by a licensed Professional Engineer.

Faster Than Cast-in-Place

Prefabrication compresses on-site schedules, reduces traffic disruption and lowers total installed cost.

Made in the USA

Fabricated in Cambridge, Ohio from American steel, supporting domestic jobs and helping satisfy Buy America and Buy American requirements.

Variable-Span Versatility

Many U.S. Bridge trusses reconfigure into multiple shorter spans using the originally supplied members, protecting your investment as project needs change.
Applications

Where the Cambridge Flat Excels

The Cambridge Flat is a strong fit for projects that call for multi-span urban and rural crossings.
  • Multi-span river crossings
  • Urban roadway bridges
  • Rural highway spans
  • Pedestrian and multi-use paths
  • Bridge replacement programs
  • Municipal infrastructure
Interactive Tool

Build Your Cambridge Flat Bridge

Configure span, width, deck, finish and setting on a live 3D Cambridge Flat model and get an instant budgetary estimate. This builder is locked to the Cambridge Flat design, with no model switching.
Cambridge Flat Bridge Builder
Live 3D Configurator
Pre-Engineered Clear-Span Bridges

Configure your span.
See it in 3D.

Pick a model, adjust span, width, load rating, decking, and finish. Watch the structure build in front of you, then request a budgetary range and weeks-to-traffic for your project.

Bridge Model
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Load
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Estimates are budgetary. More U.S. Bridge designs are being added to the builder.
Gallery

Cambridge Flat Bridges in the Field

U.S. Bridge Cambridge Flat
Questions & Answers

Cambridge Flat Bridge FAQ

Design & Engineering

The Cambridge Flat is a Warren truss with a parallel (flat) top chord, engineered for multi-span urban and rural crossings.

The Cambridge Flat is fabricated by U.S. Bridge in Cambridge, Ohio as an AISC-certified Advanced Steel Bridge Fabricator. It uses all-bolted, CNC-drilled connections, so no field welding is required during installation.
Applications & Use

The Cambridge Flat is best suited for multi-span urban and rural crossings. Common applications include multi-span river crossings, urban roadway bridges, rural highway spans.

The Cambridge Flat is installed for projects such as multi-span river crossings, urban roadway bridges, rural highway spans, and other crossings that match its span range and loading.
Specifications & Delivery

A typical Cambridge Flat covers about 60–250 ft. Every bridge is custom-engineered to the site, so the exact span, width, skew and loading are confirmed during design.

Yes. The Cambridge Flat is designed to current AASHTO standards (HL-93 and HS-20) and stamped by a licensed Professional Engineer.

The Cambridge Flat is offered in weathering steel or hot-dip galvanized steel, with optional shop-applied paint systems for added durability and custom color.

The Cambridge Flat is prefabricated in Cambridge, Ohio and shipped as ready-to-assemble, all-bolted components, which keeps field installation fast and predictable.

Ready to build your Cambridge Flat bridge?

Configure your span on the interactive builder, request full specifications, or connect with your regional U.S. Bridge representative to get started.
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