| Cover Page | Nov. 08, 2019 |
| Cover page. | |
| Entity Central Index Key | 0001073429 |
| Amendment Flag | false |
| Document Type | 8-K |
| Document Period End Date | Nov. 8, 2019 |
| Entity Registrant Name | US CONCRETE INC |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-34530 |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $.001 |
| Trading Symbol | USCR |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
