Location: SD-73 and US-18, Martin Reassurance shield after the 18 split as we head out of Martin. Location: SD-73 and County Rd, Bennett Cty Reassurance shield about two miles south of town. Location: SD-73 and County Rd, Bennett Cty Reassurance shield several miles after the last. The E9-1-1 folks have done a good job hiding the … Continue reading South Dakota Highway 73, US-18 to NE-61/NE State Line