EXHIBIT 12.1

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

(add 000, except ratio)

	For the Three Months Ended March 31,			For the Year Ended December 31,
	2017			2016			2015			2014			2013		2012
EARNINGS:
Earnings before income taxes*	$	56,862		$	607,086		$	413,655		$	250,485		$	166,131	$	101,860
Loss (Gain) from less than 50%-owned associated companies, net		(804	)		(10,499	)		(7,694	)		(931	)		241		1,393
Interest expense**		20,851			81,677			76,287			66,067			53,467		53,339
Portion of rents representative of an interest factor		22,399			23,585			21,136			15,739			12,944		13,647
Adjusted Earnings and Fixed Charges	$	99,308		$	701,848		$	503,384		$	331,360		$	232,783	$	170,239
FIXED CHARGES:
Interest expense**	$	20,851		$	81,677		$	76,287		$	66,067		$	53,467	$	53,339
Capitalized interest		788			3,543			5,832			8,033			1,792		2,537
Portion of rents representative of an interest factor		22,399			23,585			21,136			15,739			12,944		13,647
Total Fixed Charges	$	44,038		$	108,805		$	103,255		$	89,839		$	68,203	$	69,523
Ratio of Earnings to Fixed Charges		2.26			6.45			4.88			3.69			3.41		2.45

* Represents earnings from continuing operations less net earnings (loss) attributable to noncontrolling interests.

** Interest expense excluded $159 for the three months ended March 31, 2017, $343 for the year ended December 31, 2016, $217 for the year ended December 31, 2015, $266 for the year ended December 31, 2014 and $1,446 for the year ended December 31, 2013 for the interest expense component associated with uncertain tax positions. Interest expense excluded $119 accrued for the interest benefit component associated with uncertain tax provisions for the year ended December 31, 2012.