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Cover Page - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Feb. 24, 2025
Jun. 28, 2024
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2024    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 1-31993    
Entity Registrant Name STERLING INFRASTRUCTURE, INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 25-1655321    
Entity Address, Address Line One 1800 Hughes Landing Blvd.    
Entity Address, City or Town The Woodlands    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 77380    
City Area Code 281    
Local Phone Number 214-0777    
Title of 12(b) Security Common Stock, $0.01 par value per share    
Trading Symbol STRL    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 3,550
Entity Common Stock, Shares Outstanding (in shares)   30,603,090  
Documents Incorporated by Reference
DOCUMENTS INCORPORATED BY REFERENCE
Portions of the Company’s definitive Proxy Statement to be filed with the Securities and Exchange Commission and delivered to stockholders in connection with the 2025 Annual Meeting of Shareholders are incorporated by reference into Part III of this Form 10-K.
    
Entity Central Index Key 0000874238    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Amendment Flag false