Cover Page - shares	6 Months Ended
	Jun. 30, 2021	Jul. 26, 2021
Cover [Abstract]
Entity Central Index Key	0001073429
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Amendment Flag	false
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2021
Document Transition Report	false
Entity File Number	001-34530
Entity Registrant Name	U.S. CONCRETE, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	76-0586680
Entity Address, Address Line One	331 N. Main Street,
Entity Address, City or Town	Euless
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	76039
City Area Code	817
Local Phone Number	835-4105
Title of 12(b) Security	Common Stock, par value $0.001
Trading Symbol	USCR
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		17,140,096