Locations in Sioux Falls & Mitchell

South Dakota’s Premier
Injury Law Firm

Recognized for success in the courtroom and results at the negotiating table.

fighting for the injured lawyers

South Dakota’s
Premier Injury
Law Firm

Recognized for success in the courtroom and
results at the negotiating table.

Your first consultation is always free.

We specialize in Sioux Falls personal injury accidents and have a long track record of success. Our legal team’s expertise allows us to quickly evaluate your claim to allow you to get back to living your life.

We have worked with thousands of injured clients from all types of accidents including, automobile, motorcycle, and semi-truck accidents. We also represent clients in all kinds of workers’ compensation and criminal cases. Our personal injury attorneys are committed to the kind of personal, one-on-one service you deserve. Call our Sioux Falls, South Dakota office for a free consultation today!

Your Justice Is Our Priority

Personal Injury

Don’t let your personal injury defeat you. Call the personal injury lawyers who can get your life back on track.

Workers’ Compensation

Make sure you receiving the workers compensation benefits you are entitled to from your employer. 


You are innocent unless proven guilty. Defend yourself with a proven criminal defense attorney.

Contact Us About Your Case

Contact Us About Your Case

Proven Results

Every case is important to us and our past clients are the best testament to that.
No matter the size of the case, our team will find a solution.

“Grant and Mel are just the kind of people you want on your side when it comes to legal problems. They are so diligent and kind, it’s as if they take the edge off all the stress. I recommend them to everyone I know who is looking for lawyers. My case as unfortunate as it was was held with the most respect, commitment and most of all down to earth and understanding. I highly recommend this firm!”
Maggie F.

“We can’t thank Grant enough for all of his help, kindness, professionalism, and caring! We highly recommend Grant Alvine and his team!”
Carrie V.

“We worked with Grant and Melissa for several months on an injury claim. We had some complications and hurdles to overcome. They did a fantastic job of exploring all possibilities and sticking to it. We ended up with a settlement we were more than happy with. Grant and Melissa are amazing to work with and we would recommend them to anyone.”

Macie H.

Legal News

The Process of Hiring a Lawyer After a Car Accident

The Process of Hiring a Lawyer After a Car Accident

Car accidents are unfortunately not something all victims can just walk away from unscathed. Even minor fender benders can pop, stretch, or pinch the wrong muscle or nerve. Sometimes, the pain caused by a car accident is not physical, but emotional and mental. Hiring...

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What does a personal injury lawyer do?

What does a personal injury lawyer do?

Personal injury lawyers - sometimes referred to as accident lawyers, car crash lawyers, or semi accident lawyers - perform a lot of different jobs. Yes, we'll try your case in court if it comes to that. But we'll also negotiate and communicate on your behalf, help...

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What To Do After A Car Accident

What To Do After A Car Accident

Everything You Need To Know To Start The Process Safely Out on the open road, things can sometimes get a little hairy – and if you’ve been fortunate enough to have never gotten into a car accident, then consider yourself one of the lucky ones. The fact of the matter...

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Dangers of Not Hiring a Personal Injury Lawyer

Dangers of Not Hiring a Personal Injury Lawyer

If you’ve been in an accident or injured due to another person’s negligence, the first thing on your mind is getting better. That makes sense! However, it can hurt your ability to get the damages you deserve. If you don’t have anyone in your corner, it can be tempting...

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What does Alvine Weidenaar Specialize In?

What does Alvine Weidenaar Specialize In?

Here at Alvine|Weidenaar, we specialize in injury cases, including catastrophic injury and deaths. If you find yourself or your loved ones going through this horrific tragedy, we have the knowledge and expertise to help you navigate these troubling waters that lie ahead.

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Sioux Falls Personal Injury

We represent people who have been injured by another person’s negligence or unreasonable behavior.

If you have been injured by another person’s negligence or bad behavior, you need representation to ensure you receive the justice you deserve. It would be best if you had an experienced, aggressive attorney who can take a stand on your behalf against the corporations and insurance companies involved. Let us be your voice as your Sioux Falls Personal Injury Lawyers.

How much are legal fees?
We represent most personal injury cases on a contingent basis. Attorney fees are a percentage of the recovery and are received only if your case is won. You pay NOTHING up front! Fees are computed before deduction for costs. Rules require that clients are ultimately responsible for the expenses regardless of the outcome. Legal and court fees are different for every case and will be explained upfront.

Your first consultation is always free!

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Sioux Falls Workers’ Compensation

Almost all employees who suffer an injury in the course of their employment can be eligible for workers’ compensation.

Laws are designed to ensure that employees injured on the job receive fixed monetary awards, making workers’ comp a vital safety net for many people.

Alvine Weidenaar, LLP, has extensive experience with Workers’ Compensation (work comp) claims large and small and is standing by with an assertive and aggressive legal team to help you get everything you’re entitled to receive.

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Sioux Falls Criminal Law

With any criminal allegation, chances are your liberty is at stake. There could also be many more and serious ramifications you are unaware of. For instance, what civil rights could you be losing if convicted? What about your driver’s license?

The Government will have a lawyer representing them every step of the way. When you hire Alvine Weidenaar LLP, you will have a powerful and aggressive attorney who can fight effectively for you. We have successfully defended clients in all types of cases ranging from simple DUIs to Murder.

Click here to learn more.