Highway, Street & Bridge Construction NAICS 237310

        Highway, Street & Bridge Construction

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Industry Summary

The 8,400 construction companies in the US build transportation-related infrastructure; including highways, roads, streets, airport runways, and bridges. Companies may also build driveways and parking areas. Industry revenue consists of new construction (59% of industry sales), additions, alterations, or reconstruction (22%), and maintenance and repair (19%).

Variability In Costs

With low margins, variability in the cost of materials and labor can be a challenge, particularly for fixed unit price and lump sum contracts.

Dependence On Government Spending

Most industry revenue comes from publicly funded programs, mainly state and local government projects.


Recent Developments

Apr 17, 2026 - Several State DOTs Announce 2026 Projects
  • State transportation departments are launching major construction seasons in 2026, with spending focused on highways, bridges, and multimodal infrastructure across several states, according to Construction Dive. Minnesota plans more than 200 road and bridge projects, along with 51 multimodal efforts, totaling hundreds of millions of dollars. Ohio is leading in scale, allocating $3.4 billion to 977 projects, including bridge repairs and roadway improvements. Texas is advancing multibillion-dollar highway expansions and mobility upgrades, highlighted by a $4.5 billion interstate initiative. Utah has outlined $2.8 billion for 176 new projects, emphasizing highway improvements, transit, and pedestrian infrastructure. Wisconsin is undertaking more than 400 projects, including major highway expansions and reconstructions valued in the billions. Across states, investment is concentrated on improving safety, expanding capacity, and modernizing transportation networks.
  • State transportation agencies are increasingly adopting high-resolution dashcam imagery and other on-vehicle tools to monitor road assets and guide maintenance, according to Engineering News-Record. Alabama’s DOT is now using Bentley Systems’ Blyncsy platform, which crowdsources dashcam images and applies AI with 97% accuracy to assess conditions such as guardrails, signage, and striping. Bentley says more than 80% of DOTs have deployed or are considering the technology, and Hawaii’s DOT has already cut guardrail inspection times through its program. Ohio’s DOT is testing Blyncsy alongside LIDAR and Honda-provided sensors in a pilot with the University of Cincinnati, reducing duplicate trips and consolidating inspections across 49,000 lane miles. Early tests revealed some inconsistencies, but officials expect improved accuracy in the next phase and are exploring real-time crowdsourcing as connected-vehicle partnerships expand.
  • Construction industry leaders are urging swift action on the next federal highway bill as the current authorization under the $1.2 trillion Infrastructure Investment and Jobs Act expires September 30, according to Construction Dive. Congressional committees are drafting a bipartisan reauthorization, expected to span five years and potentially total about $550 billion, with a focus on roads, bridges, transit, and rail, along with permitting reforms and a proposed electric vehicle fee to support the Highway Trust Fund. Industry groups warn that failure to pass a bill on time would create uncertainty for infrastructure projects and equipment investment. Key challenges include limited legislative time, a projected $280 billion Highway Trust Fund shortfall by 2034, and the need for bipartisan support in a divided Congress. Construction leaders say a long-term, fully funded bill would provide stability and sustain demand across the sector.
  • State transportation agencies are increasingly adopting high-resolution dashcam imagery and other on-vehicle tools to monitor road assets and guide maintenance, according to Engineering News-Record. Alabama’s DOT is now using Bentley Systems’ Blyncsy platform, which crowdsources dashcam images and applies AI with 97% accuracy to assess conditions such as guardrails, signage, and striping. Bentley says more than 80% of DOTs have deployed or are considering the technology, and Hawaii’s DOT has already cut guardrail inspection times through its program. Ohio’s DOT is testing Blyncsy alongside LIDAR and Honda-provided sensors in a pilot with the University of Cincinnati, reducing duplicate trips and consolidating inspections across 49,000 lane miles. Early tests revealed some inconsistencies, but officials expect improved accuracy in the next phase and are exploring real-time crowdsourcing as connected-vehicle partnerships expand.

Industry Revenue

Highway, Street & Bridge Construction


Industry Structure

Industry size & Structure

A typical highway, street, or bridge construction company operates out of a single location, employs about 45 workers, and generates about $18.5 million annually.

    • The highway, street, and bridge construction industry consists of 8,400 companies that employ about 377,900 workers and generate $156.1 billion annually.
    • Government contracts account for about 72% of industry revenue, and the majority of government contracts are issued by state and local governments.
    • Large companies include Kiewit Corporation, Granite Construction, and US divisions of Skanska.
    • Most small to medium-sized companies operate within a limited geographical market.

                              Industry Forecast

                              Industry Forecast
                              Highway, Street & Bridge Construction Industry Growth
                              Source: Vertical IQ and Inforum

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