Operating signal within 12 months from two or more independent sources.
What they make
Fabricated Structural Metal Manufacturing332312- bridge components
- highway sign structures
- tanks
- metal forming
- fabricating equipment
- overhead cranes
- CLOSE
- SolidWorks
- PDF files
- TIF files
- DelDot DBE Certified
NAMED ON THE COMPANY’S OWN WEBSITE, READ JUL 29, 2026
Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| BA Steel LLC | Baltimore | Fabricated Structural Metal Manufacturing 332312 | UNVERIFIED | 1.2 KM |
| Sessa Sheet Metal Contractors, INC | Baltimore | Sheet Metal Work Manufacturing 332322 | ACTIVE | 1.6 KM |
| Baltimore Fabrication LLC | Baltimore | Ornamental and Architectural Metal Work Manufacturing 332323 | ACTIVE | 2.1 KM |
| Chesapeake Machining & Fabrication, INC. | Baltimore | Machine Shops 332710 | ACTIVE | 2.5 KM |
| Baltimore Fabrication, LLC | Baltimore | Fabricated Structural Metal Manufacturing 332312 | REPORTED CLOSED | 2.6 KM |
Also at this address
No other federal record shares this street address.
Where this record comes from
5 sources hold this plant, and 12 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.
EPA cross-references this facility in AIR, AIRS/AFS, MD-PEMIS, MD-RCRA, OSHA-OIS, RCRAINFO · EPA site type STATIONARY.
- The company’s own websiteOPERATINGfirst seen JUL 2026 · last seen OCT 2026
- SAM.gov entity registrationOPERATINGRecord J9VRWGJEHM87 · first seen AUG 2025 · last seen SEP 2026
- DOL Form 5500 retirement plan filingsOPERATINGRecord 830420473|MD|21213|4211 erdman ave · first seen DEC 2024 · last seen DEC 2024
- SBA Paycheck Protection Program loan recordsEXISTENCERecord MD|baltimore|4211 erdman ave · first seen JAN 2021 · last seen JAN 2021
- EPA Facility Registry ServiceEXISTENCERecord 110001769408 · first seen JAN 2015 · last seen JAN 2015
IN BALTIMORE COUNTY10 other plants share this one’s industry (Architectural and Structural Metals Manufacturing, NAICS 3323); 7 of them have a size band on record.
What each source says
Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.
- Name
- EPA: ACKERMAN - BAYNES LLC · JUL 2026 · ON THIS PAGE
- SAM.gov: ACKERMAN & BAYNES, LLC · SEP 2026 · ON THIS PAGE
- Street addressSOURCES DISAGREE
- EPA: 4211 ERDMAN AVENUE · JUL 2026
- SAM.gov: 4211 ERDMAN AVE · SEP 2026 · ON THIS PAGE
- City
- EPA: BALTIMORE · JUL 2026 · ON THIS PAGE
- SAM.gov: BALTIMORE · SEP 2026 · ON THIS PAGE
- State
- EPA: MD · JUL 2026 · ON THIS PAGE
- SAM.gov: MD · SEP 2026 · ON THIS PAGE
- County (FIPS code)
- EPA: 24510 · SEP 2026
- Coordinates
- EPA: 39.312692,-76.567019 · JUL 2026
- Employees (band)
- DOL: 20-99 · DEC 2024
- Website
- SAM.gov: www.ackbay.com · SEP 2026
- CAGE code
- SAM.gov: 1KDQ6 · SEP 2026
- Retirement plan filing (Form 5500)
- DOL: 27 active participants, plan year ending 2024-12-31, 1 plan(s) · DEC 2024
- PPP loan
- SBA PPP: PPP loan x2, approved 2021-01-30, 26 jobs reported · JAN 2021
- SAM registration expires
- SAM.gov: 2027-08-31 · SEP 2026


