| Document and Entity Information | Aug. 26, 2021 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001073429 |
| Current Fiscal Year End Date | --12-31 |
| Document Type | 8-K |
| Document Period End Date | Aug. 26, 2021 |
| Entity Registrant Name | U.S. CONCRETE, INC. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-34530 |
| Entity Tax Identification Number | 76-0586680 |
| Entity Address, Address Line One | 331 N. Main St |
| 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 |
| Security 12b Title | Common Stock, par value $.001 |
| Trading Symbol | USCR |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
