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Commissioners press staff on ‘no‑man’s‑land’ roads, three‑mile jurisdiction and Apple Valley drainage
Summary
Board members and county highway and planning staff discussed long‑standing maintenance gaps in Rapid Valley, including unmaintained roads in annexed subdivisions, complications from the three‑mile municipal planning jurisdiction, and stormwater risks tied to Apple Valley and nearby developments.
Joe Miller of the Pennington County Highway Department briefed the Board on several persistent Rapid Valley infrastructure issues on Jan. 22, including a subdivision pocket that is neither maintained by the city nor the county, drainage that funnels through Apple Valley, and broader problems arising from the cities’ three‑mile planning jurisdiction.
Miller showed commissioners a map of a Valley Ridge/De Geese area where an original homeowners’ association (HOA) dissolved and the streets were never taken over by the city or county. “There is a portion out there that is not in the city and it's not in the county, neither one of us maintain the streets,” Miller said.
Commissioners and staff discussed options including forming a road district, annexation by a municipality, or performing repairs and assessing property owners. Planning staff and Commissioners noted that road districts must be formed and voted on by residents; county staff said they will research legal options for targeted assessments but cautioned that authority is limited when subdivision approval and infrastructure standards were set by municipal subdivision regulations under three‑mile jurisdiction.
On three‑mile planning jurisdiction, Assistant Planning Director Jason Thenison told the Board that when a municipality plats land in the county's three‑mile area the subdivision regulations applied are the city’s and the county has limited control. Thenison said city variances and exceptions can be granted under municipal rules even though the land drains into county areas, and he said he has no immediate legislative remedy to offer.
Drainage and TIF concerns: Commissioners raised concerns about the Apple Valley/Murphy Ranch corridor, pointing to culverts and detention facilities that staff said may not be sized to handle additional outflows from newly annexed land. One commissioner noted the county’s TIF did not cover some downstream drainage structures and urged closer review of stormwater impacts when approving future TIFs and annexations.
Costs and timing: Joe Miller said a typical traffic signal installation can cost roughly $500,000–$750,000 not including right‑of‑way acquisition, and noted many potential Rapid Valley intersections will require turn lanes, culvert work or other improvements rather than signals. Commissioners asked staff to prioritize drafting a three‑mile agreement or other intergovernmental memorandum to clarify responsibilities with Rapid City.
Next steps: Staff committed to researching legal tools for road assessments and to drafting an intergovernmental approach to three‑mile issues; Miller and planning staff offered to meet with commissioners on site visits.
Ending: Commissioners asked for quicker action than a year‑long timeline; staff said they would begin research and return with options.
