How Velpont Supports Accelerated Bridge Construction (ABC)

Velpont bridge and crossing systems support Accelerated Bridge Construction (ABC) principles, delivering benefits beyond expedited installation times. The following sections explain what ABC is, how Velpont supports ABC, and the advantages ABC methods provide to engineers and public agencies who design and build bridge projects.

What is Accelerated Bridge Construction?

Accelerated Bridge Construction (ABC) is a bridge construction approach that uses innovative planning, engineering, materials, and construction techniques to significantly reduce on-site construction time. According to the U.S. Department of Transportation Federal Highway Administration, ABC can be applied to new bridge construction as well as the replacement or rehabilitation of existing structures, helping engineers and agencies complete projects more efficiently.

As transportation agencies continue to prioritize faster project delivery and reduced public disruption, ABC has become a preferred approach for many bridge projects.

ABC planning improves:

• Site constructibility and installation efficiency
• Overall project delivery schedules
• Work-zone safety for construction crews and the traveling public

It reduces…

• Traffic disruptions and road closure durations
• On-site construction time
• Weather-related delays and schedule uncertainty
• The need for extended equipment mobilization and temporary traffic control
• Negative environmental impacts

While minimizing traffic impacts is one of the most recognized advantages of ABC, it is among many reasons why agencies choose this methodology. ABC is also well-suited for projects with various challenges, including:

• Remote or difficult-to-access locations
• Limited construction windows
• Lengthy or costly traffic detours
• The expense and complexity of temporary bridge structures
• Sites where conventional bridge construction methods are impractical or less economical

So, what does Accelerated Bridge Construction look like in practice? The following sections highlight how the Velpont modular crossing system supports engineers and agencies in turning ABC principles into resilient bridge designs.

How does Velpont support Accelerated Bridge Construction (ABC) methodologies?

Velpont delivers factory-produced bridge and crossing components to jobsites, ready for field installation. Components of the system are considered prefabricated elements, and Prefabricated Bridge Elements and Systems (PBES) are a well-established solution for meeting ABC objectives. Compared to conventional bridge and culvert construction, the Velpont system supports ABC by:

• Using prefabricated bridge elements. Components are manufactured in controlled environments before being delivered to the site, reducing field construction activities and improving installation predictability.
• Accelerating installation. Many Velpont installations are measured in days rather than weeks, reducing project schedules, limiting road closures, and minimizing disruptions to the traveling public.
• Reducing equipment requirements. Most installations can be completed using commonly available construction equipment, such as an excavator or loader, along with standard rigging, compaction equipment, surveying tools, and hand tools. Components are fully machine-set for safe, efficient installation.
• Limiting environmental disturbance. Compared to traditional culverts, Velpont typically requires less excavation and significantly reduces the amount of work performed within the stream channel.
• Supporting smaller installation crews. Typical crews of three to five workers can install the system using a repeatable construction sequence.

The benefits of Accelerated Bridge Construction reach every stage of a bridge project. Here's how these solutions create value for key stakeholders, including engineers and public agencies.

What are the advantages of Accelerated Bridge Construction (ABC) solutions for Engineers?

ABC approaches simplify design decisions, improve constructibility, and help address many technical and logistical challenges encountered throughout bridge and crossing projects. Because the Velpont modular precast concrete crossing system is designed to support ABC principles, it can help engineers achieve these objectives:

Balancing Cost, Constructibility, and Long-Term Performance

• Factory-produced precast components provide consistent quality and predictable designs.
• Streamlined installation, reduced equipment requirements, and smaller crews can lower total installed project costs.
• Reinforced architectural-grade wet cast concrete is designed for freeze-thaw durability and a projected service life of 75 years or more, supporting long-term performance with minimal maintenance.

Meeting Aggressive Project Schedules

• Prefabricated bridge elements and accompanying precast block components reduce the amount of onsite construction required, helping shorten project schedules.
• Installation is often completed in days rather than weeks or months, minimizing road closures and public disruption.
• A defined, repeatable installation sequence improves planning confidence and helps engineers coordinate construction with permitting, environmental requirements, and stakeholder expectations.

Supporting Aquatic Organism Passage

• Maintaining the natural streambed with Velpont’s open-bottom design allows fish and other aquatic organisms to move through channels uninhibited.
• Velpont’s design aligns closely with Stream Smart principles and other ecosystem-focused crossing objectives by preserving natural hydraulic and ecological function.
• Reduced in-stream construction helps minimize disturbance to sensitive habitats during installation.

What are the advantages of Accelerated Bridge Construction (ABC) solutions for Public Agencies?

ABC helps public agencies (municipalities, DOTs, counties) replace aging infrastructure while minimizing impacts on the traveling public, surrounding communities, and the environment. As a modular precast crossing system that supports ABC techniques, Velpont helps agencies achieve infrastructure and environmental goals. The key advantages of choosing Velpont to meet ABC principles for public agencies include:

• Faster bridge and crossing replacement with reduced road closure and construction-related disruptions.
• Greater resilience to flooding, erosion, and severe storm events through an open-bottom crossing design.
• Lower long-term maintenance needs with reinforced precast concrete engineered for a projected 75+ year service life.
• Support for environmental and regulatory goals by improving fish and wildlife passage, preserving natural stream function, maintaining sediment transport, and promoting healthier watersheds.
• Reliable, predictable project delivery through a modular construction approach where components are delivered ready to install.

Every bridge project comes with competing priorities: tight schedules, limited budgets, environmental requirements, and public expectations. Velpont helps engineers and public agencies navigate those challenges by supporting Accelerated Bridge Construction principles, offering durable, resilient crossings that serve communities for decades.

To gain more insight into ABC planning, explore the Accelerated Bridge Construction resources offered by the U.S. Department of Transportation Federal Highway Administration:

• An Overview of Accelerated Bridge Construction (ABC)
• Accelerated Bridge Construction (ABC) Manual
• Contracting and Construction of Accelerated Bridge Construction Projects with Prefabricated Bridge Elements and Systems

Meet your project’s goals with Velpont, a solution that supports Accelerated Bridge Construction (ABC) planning.