Old U.S. Highway 14 and Interstate 90 (Exit 10)
Project Summary:
The project will modify the intersection of Old U.S. Highway 14 and Interstate 90 (Exit 10) in Spearfish.
Left-In, Right-Out (LIRO): The intersection will restrict left-turn movements from Old Highway 14 onto northbound North Avenue. Instead, motorists would turn right and use a dedicated u-turn location south of the intersection to perform this U-turn.
Future Intersection Layout:
Public Meeting Documents:
Tuesday, Nov. 19, 2024, Public Meeting:
A traffic study of Old U.S. Highway 14 and Interstate 90 was completed to evaluate current and future conditions; with focus on safety and traffic improvement at North Avenue’s intersections with Highway 14 and I-90 (Exit 10) where recurring crashes and operational issues had been identified.
A final report, including the improvement recommendations, were presented at a public meeting in Nov. 2024.
Of the three proposed alternatives, the Left-in, Right-Out (LIRO) design was chosen.
Project Contacts:
SDDOT:Stacy Bartlett
stacy.bartlett@state.sd.us
STATEWIDE CONSTRUCTION PROJECTS PAGE
PCN: 08LL
