Ward Nye
Chairman and Chief Executive Officer at Martin Marietta Materials
Thank you, Jenny. Welcome, everyone, and thank you for joining today's teleconference. I'm pleased to report that this year is off to a very strong start for Martin Marietta with first quarter records by nearly every measure. Given our focus on operating safely and responsibly, we're especially pleased that total and lost time incident rates were down 21% and 50%, respectively, in the first quarter. The exceptional quarterly performance is a testament to our team's focus on commercial and operational excellence and the resiliency of our differentiated business model that separates us from others in our industry. We continue to adhere to a value-over-volume approach, focusing on an aggregates-led product strategy and carefully expanding and honing our service footprint, which today is national in scope. In brief, the results we've reported over the recent past, including the first quarter results announced today, are a tribute to our team's disciplined execution of our strategic plan and gives us confidence that we will deliver 2023 adjusted EBITDA of $1.9 billion, consistent with the high end of our previously announced guidance range.
As is common practice, we will revisit our guidance more formally at [Indecipherable] year. As for the first quarter, our product demand remained robust. We experienced a modest decline in aggregate shipments as historically wet weather in California was partially offset by a mild winter in the Southeast. However, aggregates pricing momentum continued to build with a 12.8% sequential increase driven by the carryover effects of our 2022 inflation management actions and by broad acceptance of our January 1, 2023 increases, which were pulled forward from April one in the vast majority of our markets. These combined shipments and pricing results demonstrate the relative price and elasticity of aggregate demand where customer service and availability of quality in materials tend to be of greater importance than product cost. Our intentional approach to capacity expansion investments at key facilities across our footprint has positioned us well to better serve our customers during this period of high product demand across many of our locations, including markets in the Southeast and Texas. Now let's turn to our financial results.
We established a number of first quarter records for Martin Marietta, including consolidated total revenues of $1.35 billion, a 10% increase; consolidated gross profit of $303 million, a 94% increase; diluted earnings per share from continuing operations of $2.16, a 454% increase; adjusted EBITDA of $324 million, a 64% increase; and $5.70 aggregates gross profit per ton, a 134% increase. These results demonstrate the advantages of our value over volume commercial strategy, which was paramount to offsetting continued albeit moderating inflationary pressures. That said, the April OPEC+ production cuts were broadly unexpected and are likely to put upward pressure on fuel expenses throughout the remainder of the year, which tends to flow through to other cost categories. As such, our teams are actively advising customers of midyear price increases, which we anticipate will be more widely accepted and larger in scope and magnitude than we were initially considering a few months ago. Longer term, Martin Marietta is well positioned to benefit from what is expected to be an increasingly favorable and extended pricing cycle.
Let's now turn to our first quarter operating performance beginning with aggregates. We experienced solid aggregates demand across our geographic footprint with total aggregate shipments decreasing only 300,000 tons despite an approx but one million-ton shipment decline in weather-impacted California. Aggregates pricing fundamentals remain attractive, with pricing increasing 22.6% or 19.6% on a mix adjusted basis. The Texas cement market continues to experience robust demand and tight supply amid near sold-out conditions particularly in the Dallas/Fort Worth [Indecipherable]. Yet largely due to wet and cold weather to start the year, first quarter shipments declined 6.8%. Importantly, we delivered pricing growth of 32.2% more than offsetting the effect of lower weather-impacted shipments. We fully expect that favorable Texas cement commercial dynamics will continue for the foreseeable future and accordingly, have announced a $10 per ton price increase effective July 1.
Shifting to our targeted downstream businesses. Ready mixed concrete shipments decreased 37.1% and pricing increased 20.2%. As a reminder, our first quarter 2023 ready mixed concrete results exclude the Colorado and Central Texas operations that were divested nearly 13 months ago on April 1, 2022, impacting the comparability to the prior year quarter. Asphalt shipments decreased 25.1%, driven primarily by wet weather in California and Arizona. Pricing improved 9.9% following the increase in raw material costs, principally liquid asphalt or bitumen.
Before discussing our outlook for the remainder of 2023, I'll turn the call over to Jim to conclude our first quarter discussion with a review of the company's financial results. Jim?