The following tables disaggregate revenue by end market, customer type and contract type, which the Company believes best depict how the nature, amount, timing and uncertainty of its revenue and cash flows are affected by economic factors for the years ended December 31, 2023, 2022 and 2021.


	Year Ended December 31,
(in thousands)	2023		2022		2021
Civil segment revenue by end market:
Mass transit (includes certain transportation and tunneling projects)	$	1,079,629	$	1,026,589	$	1,417,196
Military facilities	348,133		258,028		194,701
Bridges	204,029		265,130		238,345
Commercial and industrial sites	118,880		70,708		70,099
Other	133,194		114,427		175,419
Total Civil segment revenue	$	1,883,865	$	1,734,882	$	2,095,760


	Year Ended December 31,
(in thousands)	2023		2022		2021
Building segment revenue by end market:
Government	$	424,130	$	329,661	$	291,629
Health care facilities	294,667		178,997		64,042
Education facilities	226,335		140,514		159,929
Mass transit (includes transportation projects)	188,335		132,836		130,923
Commercial and industrial facilities	77,118		251,849		352,265
Hospitality and gaming	59,771		137,640		338,998
Sports and entertainment	55,668		27,774		24,315
Other(a)	(23,485)		43,300		66,001
Total Building segment revenue	$	1,302,539	$	1,242,571	$	1,428,102


	Year Ended December 31,
(in thousands)	2023		2022		2021
Specialty Contractors segment revenue by end market:
Commercial and industrial facilities	$	213,003	$	166,286	$	139,751
Mass transit (includes certain transportation and tunneling projects)	119,760		350,005		588,162
Multi-unit residential	114,516		112,944		133,085
Government	89,031		61,424		18,476
Water	85,176		79,553		90,887
Health care facilities	57,292		23,001		29,567
Other(a)	15,045		20,089		118,040
Total Specialty Contractors segment revenue	$	693,823	$	813,302	$	1,117,968


	Year Ended December 31, 2023
(in thousands)	Civil		Building		Specialty Contractors		Total
Revenue by customer type:
State and local agencies	$	1,250,740	$	718,106	$	316,473	$	2,285,319
Federal agencies	400,782		187,199		(14,306)		573,675
Private owners(a)	232,343		397,234		391,656		1,021,233
Total revenue	$	1,883,865	$	1,302,539	$	693,823	$	3,880,227


	Year Ended December 31, 2022
(in thousands)	Civil		Building		Specialty Contractors		Total
Revenue by customer type:
State and local agencies	$	1,273,639	$	461,193	$	332,176	$	2,067,008
Federal agencies	313,791		168,307		22,705		504,803
Private owners	147,452		613,071		458,421		1,218,944
Total revenue	$	1,734,882	$	1,242,571	$	813,302	$	3,790,755


	Year Ended December 31, 2021
(in thousands)	Civil		Building		Specialty Contractors		Total
Revenue by customer type:
State and local agencies	$	1,791,531	$	363,686	$	481,255	$	2,636,472
Federal agencies	205,080		189,508		47,724		442,312
Private owners	99,149		874,908		588,989		1,563,046
Total revenue	$	2,095,760	$	1,428,102	$	1,117,968	$	4,641,830

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(a)The year ended December 31, 2023 includes the negative impact of a non-cash charge of $83.6 million that resulted from an adverse legal ruling (of which $72.2 million impacted the Building segment and $11.4 million impacted the Specialty Contractors segment). Refer to Note 14, Business Segments, for additional details.


	Year Ended December 31, 2023
(in thousands)	Civil		Building		Specialty Contractors		Total
Revenue by contract type:
Fixed price	$	1,618,081	$	532,950	$	577,144	$	2,728,175
Guaranteed maximum price(a)	(3,184)		532,538		783		530,137
Unit price	235,085		—		91,992		327,077

Cost plus fee and other	33,883		237,051		23,904		294,838
Total revenue	$	1,883,865	$	1,302,539	$	693,823	$	3,880,227


	Year Ended December 31, 2022
(in thousands)	Civil		Building		Specialty Contractors		Total
Revenue by contract type:
Fixed price	$	1,441,547	$	349,318	$	675,461	$	2,466,326
Guaranteed maximum price	1,142		595,907		15,875		612,924
Unit price	274,293		33		85,574		359,900

Cost plus fee and other	17,900		297,313		36,392		351,605
Total revenue	$	1,734,882	$	1,242,571	$	813,302	$	3,790,755


	Year Ended December 31, 2021
(in thousands)	Civil		Building		Specialty Contractors		Total
Revenue by contract type:
Fixed price	$	1,815,079	$	336,128	$	988,941	$	3,140,148
Guaranteed maximum price	2,854		888,345		14,505		905,704
Unit price	268,377		(1,373)		96,782		363,786

Cost plus fee and other	9,450		205,002		17,740		232,192
Total revenue	$	2,095,760	$	1,428,102	$	1,117,968	$	4,641,830

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