Tom Hill
Chairman and CEO at Vulcan Materials
Thank you, Mark. And thank all of you for joining our Vulcan Materials earnings call this morning. Our first quarter results moved us towards delivering on a fourth consecutive year of double digit adjusted EBITDA growth. Although the weather was unusually cold and wet across many geographies for much of the quarter, our teams executed well and improved our areas[Phonetic], cash gross profit per ton by 10%. Their commitment to our Vulcan way of selling and Vulcan way of operating disciplines, is driving solid results.
In the quarter, we generated $323 million of adjusted EBITDA and expanded our adjusted EBITDA margin. Importantly, several key trends continue. Pricing momentum, cost deceleration, unit profitability expansion, robust cash generation, disciplined capital allocation, and return on invested capital improvement. In the aggregates segment, year over year shipments declined by 7%, but the durability of our aggregates business and the consistency of our execution stood out in a weather impacted quarter.
We again improved our trailing 12 months aggregates cash gross profit per ton, pushing it to $9.66 per ton and making further progress toward our current $11 to $12 target. The pricing environment remains positive and year over year, aggregates cash cost of sales continues to moderate. Aggregates freight adjusted price improved 10% in the quarter and increased a $1.25 per ton sequentially from the fourth quarter. A clear illustration of the success of January increases and the continuous execution of our local way of selling disciplines. Our first quarter cash cost of sales performance resulted in a fourth consecutive quarter of trailing 12 months cost deceleration and improving sequentially by another 230 basis points.
Our relentless focus on improving efficiencies in our plants through our Vulcan way of operating disciplines remains a key driver of managing costs, expanding unit profitability, and ultimately generating attractive free cash flow. There is a healthy pipeline of opportunities to deploy this free cash flow for both attractive acquisitions and complementary strategic greenfield development. These targeted opportunities are at varying stages but as an example, earlier this week we closed on a bolt-on Aggregates and Asphalt acquisition in Alabama, a top ten[Phonetic] state. I'm proud of how our teams continue to execute our two pronged growth strategy.
They are focused on expanding our reach in addition to enhancing our core with consistent expansion of unit profitability by controlling what we can control even in a dynamic macro environment and demand environment. On the demand side, I want to provide a few comments about each in use, starting with private demand and then moving to public. Momentum in single family continues to accelerate across our footprint and points to growth in 2024. However, we continue to expect weaker multifamily residential construction to largely offset the single family approval this year. Overall affordability and elevated interest rates remains a challenge but the underlying fundamentals of population growth and low inventories in Vulcan markets support the recovery in residential construction.
And improving residential backdrop is also a positive sign for future activity in certain categories of nonresidential construction and recent data shown some signs of stabilization and overall starts. However, the landscape continues to vary across categories. As expected continued moderation in warehouse stars will be the biggest headwind to private and non residential demand this year. Currently, like commercial activity, remains weak, but over time, we expected to follow the positive trends in single family housing. We continue to see and capitalize on opportunities in the manufacturing category.
Our unmatched southeastern footprint and unique logistics capabilities positions us well to service these large aggregates intensive projects. Our footprint is also an advantage on the public side. With over two-thirds of federal highway spending allocated to Vulcan states. Additionally, other public infrastructure activity which benefits from IIJA funding is going faster in Vulcan states than the country as a whole. A sustained elevated level of highway starts of over $100 billion, coupled with record 2024 state budgets supports healthy growth in highway and infrastructure demand, both in 2024 and for the next several years. Now, I'll turn the call over to Mary Andrews for some additional commentary on our first quarter. Mary Andrews?