Recognized for her collaborative approach, Rebecca has worked closely with elected officials, governmental agencies, and community members, —ensuring that all voices are heard —in ACHD decisions. Her ability to listen, analyze, and act decisively has earned her the title of "Commissioner of the Year" from the Idaho Association of Highway Districts in 2014, as well as a spot on the Idaho Business Review’s “Women of the Year” in 2006.

Beyond her work with ACHD, Rebecca is a dedicated community member, volunteering with organizations such as the Ada County Boys & Girls Club, Susan G. Komen Breast Cancer Foundation, and the Idaho Volunteer Lawyers Program. Her extensive service underscores her commitment to improving the lives of Ada County residents.

Rebecca Arnold is a doer, a leader, and a dedicated public servant who has the experience and vision to continue making Ada County’s roads safe, efficient, and future-ready. Her blend of professional skills, deep community involvement, and proven track record makes her the ideal choice for Ada County Highway District Commissioner.

• Thirty-Four years as an Attorney; ACHD Commissioner (16 years); realtor (currently inactive) and former Certified Public Accountant.
• Experience in accounting; law; business; budget planning, implementation and oversight (including ACHD’s budgets which have exceeded $130 Million); infrastructure planning, construction and maintenance; collaboration with elected officials and governmental agencies; transportation planning; resource and personnel management; and strategic legislative changes.
• Experience in commercial and residential real estate and real estate law, including land acquisition and sales; price negotiations and valuations; land entitlements; residential subdivision development, pricing, and sales; construction and installation of site improvements for residential and commercial developments; shopping center development and construction; and strategic planning with clients.
• ACHD Commissioner (including Commission President for 3 years). Chosen "Commissioner of the Year" by the Idaho Association of Highway Districts in 2014.
• Board Member of the Idaho Association of Highway Districts (including 2 years as President)
• A proven track record of collaboration, listening to the public, carefully reviewing the law and the facts, and making well-reasoned decisions, while prudently managing taxpayer funds.
• One of Idaho Business Review’s "Women of the Year" - 2006

More than 34 years of community and volunteer service in Idaho including:

• Board member of the Boy's and Girl's Clubs of Ada County
• Board Member of the Susan Komen Breast Cancer Foundation
• Board Member of the Community Planning Association (COMPASS)
• Volunteer lawyer in the Idaho Volunteer Lawyers Program/CASA for special advocates/guardians ad litem in child protection cases
• Junior League of Boise volunteer
• Ada County City Emergency Management Executive Council (ACCEM) executive committee member.

• January 2023 Ada County Assessor, Boise, Idaho to Present
• January 2004 Ada County Highway District Commissioner, Boise, Idaho to December 31, 2020

March 2012 to Present
General Counsel – W. H. Moore Company, Boise, Idaho.

November 2003 to Feb 2012
Attorney – Private firm self-employed, Boise, Idaho.

June 2004 to June 2013
Real Estate Salesperson– part time, occasional transactions, handled transactions primarily for family, friends and personal real estate investments.

September 1994 to Oct 10, 2003   
Senior Attorney - Albertson's Inc., Boise, Idaho.

June 1988 To Sept. 1994
Attorney - Givens Pursley & Huntley, Boise, Idaho.

1990 to 1995
Idaho Volunteer Lawyers Program/CASA - provided free legal services to court appointed special advocates/guardians ad litem in child protection cases.

December 1985 to Dec. 1986
Law Clerk - Coburn, Croft & Putzell, St. Louis, MO.

January 1986 to May 1986
Law Clerk - Judicial Clerkship Course. Clerked part-time for Honorable James Meredith, Senior Judge, U.S. District Court, Eastern District of Missouri.

March 1983 to August 1984
Consumer Accounting Supervisor – Jackson Purchase Rural Electric Cooperative

August 1981 to May 1982
Graduate Assistant - Murray State University. Taught principles of accounting.

September 1978 to August 1981
Auditor - Tennessee Comptroller of the Treasury

Ada County Highway District – elected Commissioner in 2004 and re-elected in 2008, 2012 and 2016:  one of 5 elected Commissioners who make policy decisions and who oversee an agency with 305 employees and an annual budget of approx. $125 Million for the maintenance of 2,400 miles of roadways, the construction of new infrastructure projects and the coordination and planning of regional transportation system; Vice President 2007-2010; and 2017-2018; President 2011, 2012 and 2019

Ada County City Emergency Management Council – Jan 2005 to Feb 2013 & 2019, served as an executive committee member making policy decisions and administering emergency preparedness funds, including funding from Department of Homeland Security

Idaho Volunteer Lawyers Program/CASA - 1990 to 1995 - provided free legal services to court appointed special advocates/guardians ad litem in child protection cases.

Junior League of Boise - 1990 to Present, currently serving as an active volunteer in various community service projects through the JLB, including 1 year as chairperson of Second Time Around retail shop.  Received 2006 Community Service Award.  For JLB’s 80^th anniversary in 2008, chosen as one of 80 honored women over the 80 year history of the JLB that exemplify the spirit and values of the JLB.

Idaho Association of Highway Districts – November 2007 to February 2019, served as board Member, President and Past President of the association representing 62 highway districts in Idaho. Honored as Commissioner of the Year for 2014.

Community Planning Association – January 2008 to Present, currently serving as an executive board member making policy decisions and administering funding for two-county Metropolitan Planning Organization; 2010 to Present Chairman Finance Committee

Ada County Boys & Girls Club – January 2012 to Present, currently serving as a board member   

Susan G. Komen Breast Cancer Foundation – Boise, Idaho Affiliate,
Board of Directors October 1999 through October 2005; Affiliate Treasurer – 2 years; Volunteer - October 1999 to 2012, served as a volunteer for fundraising and education projects.  Race for the Cure sponsor

Kare For Kids Project – May 2007 through December 2011, served as a committee member of K4K project, a project of the Junior League of Boise providing support services for children in foster care and foster parents in collaboration with the Idaho Department of Health and Welfare   

Idaho Business Review Women of the Year Award Chosen for award in 2006

Idaho Child Abuse Prevention Coalition January 2006 to 2008, served as a coalition member for planning and conducting awareness and prevention activities to reduce child abuse cases and to direct parents and children to appropriate agencies for assistance.  

The Bridge Committee – May 2005 through May 2007 - committee member of The Bridge project, a joint project of The Children’s Home Society, the Junior League of Boise, and the Idaho Department of Health and Welfare

Coalition for a Healthy Idaho – 2003-4, served as a coalition member and an advocate for legislation pertaining to health issues