Inventory Changes Daily. Please Contact Us For Updates.

Dump TrailersView
Snowmobile TrailersView
Enclosed TrailersView
Utility TrailersView
Equipment TrailersView



At I39 Supply, we can take care of everything you need for your current trailer or help you build the one of your dreams. We also have a full service repair facility on site!


Friendly and knowledgeable staff. I delt mostly with Andrew. Great product knowledge and answered all my questions. I had a trade-in and was given a very fair valuation. I went home with a great looking trailer! I recommend this dealership!

Very friendly and knowledgeable staff. Andrew helped us and answered all of our questions. Got a very good price for our trade in trailer which was well maintained. Left with a brand new trailer!

Got a trailer hitch installed customer service, fair quality work and everyone has a smile on their face. They all like their jobs and appreciate your business! Thanks Matt and crew!



Come See Us Just North of Madison!

I39 Supply trailer sales, rental and trailer repair is in central Wisconsin. Our convenient location is near Cascade Mountain on Interstate 39. Exit 85.  We stock over 250 trailers at all times. Our trailer purchasing power provides value to customers because we can special order trailers with a quick turnaround time and low cost. Our helpful team can’t be beat so call us today! Call us at (608) 742-6223

i39_supply-equipment-aluminum-speedloader-10K-1024x546 (1)
Closed 9/1/21 Thru 9/6/21

Our Dealership Will Be Closed From 9/1/21 Thru 9/6/21 To Attend The NATDA National Trailer Show & Celebrate Labor Day. We Will Be Back To Normal Hours On 9/7/21. Thank You For Your Interest & We Look Forward To Returning Your Call or Email!

-I39 Supply Sales, Service, & Graphics

Scroll to Top