USS-UPI (USS-POSCO Industries)
Large load · 900 LOVERIDGE ROAD, Pittsburg, CA
USS-UPI is a steel finishing mill at 900 Loveridge Road, Pittsburg, California, whose production was indefinitely idled in December 2023. The site was bought for $275 million by U.S. Steel Property Holdings, a unit of U.S. Steel, which is owned by Nippon Steel Corp.
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Overview
UPI produces cold-rolled sheets, galvanized sheets, tin plate and tin-free steel from hot-rolled coils supplied by other U. S. Steel facilities. UPI's annual production capability is approximately 1.5 million tons. In December 2023, production at UPI was indefinitely idled.
Profile
- Ownership
- The former USS-Posco plant site was bought for $275 million by U.S. Steel Property Holdings, according to documents filed on Dec. 29 with the Contra Costa County Recorder's Office. U.S. Steel Property Holdings is a real estate unit of U.S. Steel, which is owned by Nippon Steel Corp.
- Permits and site
- The site is an approximately 483-acre steel production facility at 900 Loveridge Road in Pittsburg, California. An amended Title V Semi-Annual Monitoring Report for June 1 through November 30, 2025 was filed for U.S. Steel Property Holdings, LLC, formerly USS-UPI, LLC.
Facility
- Activity
- Cold-rolled sheets, galvanized sheets, tin plate and tin-free steel
- Industry
- Manufacturing
- Site type
- Facility
- Operating status
- Idled
Reported Dec 1, 2023
Related records
Timeline
- Dec 1, 2023
- Production at UPI indefinitely idled.
About Us - Locations - www.ussteel.com
- Dec 29, 2025
- Site sold to U.S. Steel Property Holdings for $275 million.
East Bay steel plant property is bought for more than $200 million