Benefits Office
Iron Workers Local 451 contractors

Welcome To Iron Workers Local 451

I.M.P.A.C.T - Reinforcing Our Future

Ironworkers Local 451

First chartered in 1934, Local 451 encompasses 6 counties in Delaware, Pennsylvania and Maryland. We are more than 200-members strong who are well-trained and ready to work with and for our signatory contractors.

We are a Local Union chapter of the International Association of Bridge, Structural, Ornamental and Reinforcing Ironworkers.


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Contact Address

Union Office

203 Old DuPont Road, Wilmington, DE



Monday - Friday 5 a.m. - 1:30 p.m.