Modified Bowstring · Pratt

Viking Bridge

A modified bowstring arch configured from a Pratt truss with vertical end posts, similar to the Seneca, with vertical members at every panel point.
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Overview

The U.S. Bridge Viking

The U.S. Bridge Viking is a modified bowstring arch style configured from a Pratt truss using vertical end posts. It is similar to the Seneca style, with vertical members at every panel point that shrink the floor beams and minimize or eliminate stringer beams.
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At a Glance

Viking 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
80-250ft
Bridge Type
Modified bowstring Pratt 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 Viking 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 Viking Excels

The Viking is a strong fit for projects that call for architectural vehicular crossings.
  • Architectural roadway crossings
  • River and canal spans
  • Campus and resort entrances
  • Scenic and recreational routes
  • Pedestrian and multi-use paths
  • Municipal and county bridges
Interactive Tool

Build Your Viking Bridge

Viking 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
Currently Configuring
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Clear span
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Width
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Load
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Estimates are budgetary. More U.S. Bridge designs are being added to the builder.
Gallery

Viking Bridges in the Field

U.S. Bridge Viking
U.S. Bridge Viking
U.S. Bridge Viking
Questions & Answers

Viking Bridge FAQ

Design & Engineering

The Viking is a modified bowstring Pratt truss with vertical end posts, engineered for architectural vehicular crossings.

The Viking 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 Viking is best suited for architectural vehicular crossings. Common applications include architectural roadway crossings, river and canal spans, campus and resort entrances.

The Viking is installed for projects such as architectural roadway crossings, river and canal spans, campus and resort entrances, and other crossings that match its span range and loading.
Specifications & Delivery

A typical Viking covers about 80–250 ft. Every bridge is custom-engineered to the site, so the exact span, width, skew and loading are confirmed during design.

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

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

The Viking 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 Viking 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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