So I've recently moved to the Sioux Falls area (yes, boo, wrong side of the state unfortunately) and there's some point name quirks/route quirks I figured I'd bring up. Sorry if the post is long.
Signage/Maintenance Mismatches:
This may have been brought up before, but SD 42 and SD 115 technically end at Sioux Falls city limits, since DOT and the City have a maintenance agreement. However, signage in town remains and in some places has been replaced, so in my opinion (and apparently the City's but not DOT's), the routes still go through Sioux Falls. The business routes, like many in SD, have always been city-signed, and signage for 29 BS and 229 BL is pretty good for an SD business route. 90 BS, however, had its signage taken down when I was 7 if I remember right (if there was any signage in the first place!), so that should probably go out from the HB.
Veterans Parkway/SD 100:
This beltway is still under construction, and I don't know if it will ever be signed as SD 100. The planning documents for a lot of different organizations (Lincoln County, Minnehaha County, some development pages) list it as such, but when I contacted the South Veterans Parkway website, they said it would just be signed as "Veterans Parkway". The consulting firm where I work is involved with this project, so I'll try to wrangle one of the transpo guys and ask about the signage.
Point name issues/additions:
The main problem here is both Lincoln and Minnehaha County use county road numbers as a maintenance indication, not as a cohesive route number. For instance, Rice St/Holly Blvd between I-229 and SD 11 used to be CR 140, but as both Sioux Falls and Brandon grew the only parts that are still technically CR 140 and signed as such are between Veterans and Arbor Ridge and between Sandstone and the Big Sioux. These will be listed by route.
SD 11:
MadSt is signed as CR 142
CR 138 isn't signed in Brandon, point would be AspBlvd
Could add a point at Sioux Blvd for the BSRA, lots of campers go that way
CR 113 should be moved to the curve and be CR122
Recommend adding a point at 485th Ave for Splitrock State Park, the only reason to visit Garretson
CR 122 isn't signed in Garretson, point would be DowsSt
SD 42:
483rd Ave is CR 111
463rd Ave is CR 151
SD 115:
Point request at 69th St because I took my daughter to that Subway
Between I-229 and downtown, I would recommend using 41st and 26th instead of 33rd and 18th
CR 129 not signed in Dell Rapids, intersecting road names are Highway 77 and 4th St
SD 44:
CR 105 not signed in Lennox, intersecting roads are 466th Ave and 279th St
US 18:
CR 135 not signed in Canton, affects both points
CR 135_S would be CedSt
CR 135_N would be DakSt
SD 38:
463rd Ave is CR 151 (and signed!)