MARK A O'BRIEN Professional Engineer License verification

Business Entity

ACTIVE

License Type

Professional Engineer

Description

LICENSED PROFESSIONAL ENGINEER

License Number

062066496

License Status

ACTIVE

Business

First Name

MARK

Middle

Last Name

O'BRIEN

Business Name

MARK A O'BRIEN

Original Issue Date

06/17/2014

Effective Date

11/13/2025

Expiration Date

11/30/2027

City

CARTERVILLE

State

Zip

62918

Ever Disciplined

LastModifiedDate

11/13/2025