M&A activity snapshot
Civil contracting consolidation is driven by public companies buying vertically integrated paving businesses. Construction Partners agreed to pay $654 million in cash and 3 million shares for Lone Star Paving in Austin, a deal valued at $878 million at announcement. Granite closed Warren Paving for $540.0 million and Papich Construction for $170.0 million in August 2025, a combined $710 million that Granite put at a blended 9.2x expected adjusted EBITDA, a year after buying Dickerson & Bowen for $125.5 million.
This page covers road, highway, bridge, and heavy civil construction (NAICS 237310 and related heavy civil codes). Civil design and engineering firms are a separate market.
The market behind those deals is fragmented and funded by public budgets. Census counted 9,256 highway, street, and bridge construction establishments in 2023, and 6,205 of them had fewer than 20 employees. State and local governments awarded a record $152.2 billion of transportation contracts in 2025, up from $132.2 billion in 2024.
Who is buying
Public paving and aggregates roll-ups. Construction Partners, Granite, and Knife River buy regional paving contractors that come with plants and reserves. Construction Partners also bought eight Houston hot-mix asphalt plants from affiliates of Vulcan Materials in 2025, a materials major selling downstream paving assets to a contractor roll-up.
Aggregates and materials majors. These buyers want reserves first. Martin Marietta paid $2.05 billion for 20 aggregates operations from Blue Water Industries, and Arcosa paid $1.2 billion for Stavola, a New York-New Jersey quarry and asphalt business. A contractor with its own quarry or sand-and-gravel pit can attract this buyer group.
Private equity. Capstone counted 68 PE platforms and 237 sponsor-backed construction transactions in 2025 across all construction. In civil, sponsors work at smaller sizes, such as Strength Capital's $30 million acquisition of excavation and civil contractor Kelchner.
What buyers look for
Owned materials. Asphalt plants, aggregate reserves, and liquid asphalt terminals are the core of the thesis. Lone Star brought 10 hot-mix asphalt plants, four aggregate facilities, and one liquid asphalt terminal. Owning the inputs lets a contractor win bids on cost and sell material to competitors.
Public backlog in growing states. Highway work is awarded by state DOTs, mostly from federal formula funds. Construction Partners reported a record $3.36 billion backlog in August 2026, citing healthy demand for public and commercial work. Census put highway construction at a $150.6 billion annual rate in August 2026.
DOT prequalification, bonding, and DBE status. A contractor cannot bid state work without DOT prequalification and surety bonds, so buyers check that both survive the change of ownership. DBE certification has become less certain: the October 2025 interim rule removed race- and sex-based presumptions, and the September 2026 final rule moved the program to individualized determinations.
What makes a strong company
A civil contractor that draws roll-up interest typically has:
- Owned hot-mix asphalt plants, and ideally permitted aggregate reserves, in a growing metro.
- A track record of state DOT and municipal awards, with prequalification ratings that cover the project sizes a buyer wants.
- Surety relationships and bonding capacity sized to its backlog.
- EBITDA margins near what integrated peers report. Warren Paving was expected at about 19% adjusted EBITDA margin; a crew-only paver should not expect that.
- Superintendents and estimators who can bid and run work without the founder.
Valuation and deal structure
Integrated civil deals with disclosed terms span the range below. Knife River stated about 9x projected 2025 EBITDA for Strata. Arcosa stated 10.7x LTM adjusted EBITDA net of tax attributes, and 12.0x gross, for Stavola. Granite stated a blended multiple of about 9.2x expected adjusted EBITDA for Warren Paving and Papich together. By Axia's arithmetic, Warren Paving's $540.0 million cash price against about $52 million of expected adjusted EBITDA is about 10.4x. Also by Axia's arithmetic, Lone Star's $878 million announced value against $120 million of expected run-rate adjusted EBITDA is about 7.3x.
Every deal above involved a materials-heavy target. No public multiple data exists for crew-only civil contractors without plants, and those should expect less. Across all construction, Capstone reports PE buyers averaged 10.6x EV/EBITDA and strategics 7.5x from 2018 to 2025. Consideration often includes acquirer stock, as in the Lone Star deal. To see where your numbers sit, try the valuation tool.
Outlook
Demand looks strong through 2026. ARTBA forecasts a record $209.1 billion transportation construction market in 2026, with highway activity plateauing near record levels. The risk sits after that. The IIJA's $356.5 billion federal highway authorization covers FY2022-FY2026, so buyers will price reauthorization risk into backlog that extends past 2026.
Expect roll-ups to keep buying integrated pavers in growing regional markets, as Construction Partners, Granite, and Knife River did in 2024-2025. For the wider construction picture, see Construction & Specialty Contracting M&A. For how buyers reach owners in fragmented trades, see off-market deal sourcing channels.