Update 11:53 am

Northbound I-29 between the Harrisburg exit 71 and Tea exit 73 remains closed as an investigation continues into what has been announced as a hit and run on a pedestrian.

According to a press release from the Lincoln County sheriff, a juvenile female was standing or walking on I-29 when she was struck by an unknown vehicle at around 3:00 am early Monday morning and suffered serious life-threatening injuries.

If you have any information related to this incident you are asked to call 605-764-5651.

Original story August 12, 2019 6:18 am

The Lincoln County Sheriff's office announced a closure on northbound I-29.

From the Sheriff's Facebook post:

I-29 is closed at MM71 NB (Tea/Harrisburg) exit. The Lincoln County Sheriff’s Office and the South Dakota Highway Patrol are investigating an incident in this area. If you are going north on I-29 you will need to exit at MM71. Take 273rd St east to 472nd Ave (Louise Ave) and follow that north until you get to the round-a-bout at 271st St. You then can take 271st St back west toward I-29 and get on from there. We will give updates as soon as we are able.

As of right now it is unknown what the nature of the investigation is.