Top 5 Structural Steel Manufacturers in Idaho 2026
Last updated
FirmsLedger lists 5 structural steel manufacturers headquartered in Idaho. That ranks 5th among the 47 states with listings, behind Alabama (11), Iowa (7) and 2 other states. The largest cluster is in Nampa (2), and the other 3 are in 3 more cities. Nampa listings include Erwin Custom Fabrication and Snake River Fabrication.
By specialty, Idaho has welding (10), laser cutting (2), sheet metal fabrication (2) and aluminum fabrication (2) listings. Capabilities that more than one of them list include custom fabrication (2).
| Company | City | Specialty | Phone | Website |
|---|---|---|---|---|
| Teton Metal Fabrication | Rexburg | Structural steel fabrication | (208) 206-0535 | tetonmetalfab.com |
| Erwin Custom Fabrication | Nampa | Custom metal fabrication | (208) 856-6487 | erwinfab.com |
| Laser Metal Fabrication | Twin Falls | Laser sheet cutting (24 gauge to 1-inch plate) | (208) 948-8100 | lasermetalfab.com |
| TratFab | Star | CNC Laser Cutting | (208) 366-8424 | tratfab.com |
| Snake River Fabrication | Nampa | Powder Coating & Galvanizing | (208) 546-0843 | snakerfab.com |
Erwin Custom Fabrication
Nampa, Idaho
Erwin Custom Fabrication operates from a shop in Nampa, Idaho, serving the Treasure Valley since its founding in 1993. The company began as a custom welding and metalwork operation and has grown into a full-service fabrication facility over more than three decades.
Laser Metal Fabrication
Twin Falls, Idaho
Laser Metal Fabrication operates from Twin Falls, Idaho, in the Magic Valley region. The company was founded by Cort Johnson, who holds a bachelor's degree in Welding Fabrication Technology from Brigham Young University–Idaho and a master's in Project Management from Idaho State University.
TratFab
Star, Idaho
The company serves Southern Idaho and Eastern Oregon, focusing on precision architectural metalwork for residential and commercial projects. The shop runs CNC laser cutting capable of processing steel up to 3/4 inch thick, CNC bending for simple and complex geometries, and welding, supported by a Kratos Beam Crane, an Adira press brake, a cutoff saw, and a CNC laser system.
Frequently asked questions
Which structural steel manufacturers in Idaho list custom fabrication?
2 companies list it: Laser Metal Fabrication and Snake River Fabrication.