| | | | | | | | |
| Name of Corporation | | Jurisdiction of Incorporation |
| | |
| CXT Incorporated | | Delaware |
| IOS Holdings, LLC | | Delaware |
| L.B. Foster GmbH | | Germany |
| L.B. Foster India Holdings Company | | Delaware |
| L.B. Foster International Holdings Company | | Delaware |
| L.B. Foster Latin America Holdings Company | | Delaware |
| L.B. Foster Produtos Ferroviários do Brasil Ltda. | | Brazil |
| L.B. Foster Rail Technologies Canada Ltd. | | Quebec, Canada |
| L.B. Foster Rail Technologies, Corp. | | British Columbia, Canada |
| L.B. Foster Rail Technologies, Inc. | | West Virginia |
| L.B. Foster Rail Technologies (UK) Limited | | United Kingdom |
| L.B. Foster Technologies (Beijing), Ltd. | | China |
| Netpractise Limited | | United Kingdom |
| Portec Rail Nova Scotia Company | | Nova Scotia, Canada |
| Salient Systems, Inc. | | Ohio |
| Skratch Enterprises Ltd. | | United Kingdom |
| TEW Engineering Limited | | United Kingdom |
| TEW Plus Limited | | United Kingdom |