Ohio State Route 166

State Route 166 (SR 166) is an east–west state highway in the northeastern portion of the U.S. state of Ohio. The western terminus of State Route 166 is at a T-intersection with U.S. Route 6 just over 3 miles (4.8 km) northeast of Chardon. Its eastern terminus is at State Route 534 about 5 miles (8.0 km) west of Rock Creek.

State Route 166 marker

State Route 166

Route information
Maintained by ODOT
Length11.40 mi[1] (18.35 km)
Existed1923[2][3]–present
Major junctions
West end US 6 near Chardon
East end SR 534 near Rock Creek
Location
CountryUnited States
StateOhio
CountiesGeauga, Ashtabula
Highway system
  • Ohio State Highway System
← SR 165→ SR 167

Route description

State Route 166 starts in Hambden, traveling northeast through the northwest corner of Montville Township, passing by Curtis Airport. After it crosses into Thompson Township, it curves to face the east. It then crosses the county line into Ashtabula County, ending at SR 534, near Rock Creek. No segment of this highway is a part of the National Highway System, a system of highways identified as most important for the economy, mobility and defense of the nation.[4]

History

The debut of State Route 166 took place in 1923. The original routing of State Route 166 consisted of the existing route of State Route 166 from its current western terminus northeast of Chardon to its junction with State Route 528, and State Route 528 from that intersection north to that highway's current northern terminus north of Madison.[2] [3] In 1939, State Route 166 was re-routed. From the current junction of State Route 166 and State Route 528, State Route 166 was routed east, replacing what was formerly designated as State Route 522, to the intersection that marks State Route 166's current eastern terminus at State Route 534 west of Rock Creek. In turn, State Route 528 was extended northward, replacing what was the north-south leg of State Route 166.[5] [6]

Major intersections
CountyLocationmi[1]kmDestinationsNotes
GeaugaHambden Township0.000.00 US 6
Thompson Township4.096.58 SR 86 (Plank Road)
6.5910.61 SR 528 (Madison Road) – Thompson Township, Geauga County, Middlefield
AshtabulaTrumbull Township11.4018.35 SR 534 / CR 12 (Footville-Richmond Road) – Geneva, Windsor
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References
  1. Ohio Department of Transportation. "Technical Services Straight Line Diagrams". Retrieved 2006-11-12.
  2. Map of Ohio State Highways (MrSID) (Map). Cartography by ODHPW. Ohio Department of Highways and Public Works. April 1922. Retrieved 2011-01-08.
  3. Map of Ohio Showing State Routes (MrSID) (Map). Cartography by ODHPW. Ohio Department of Highways and Public Works. July 1923. Retrieved 2011-01-08.
  4. National Highway System: Ohio (PDF) (Map). Federal Highway Administration. December 2003. Retrieved 2011-01-08.
  5. Ohio Highway Map (MrSID) (Map). Cartography by ODOH. Ohio Department of Highways. 1939. Retrieved 2011-01-08.
  6. Ohio Highway Map (MrSID) (Map). Cartography by ODOH. Ohio Department of Highways. 1940. Retrieved 2011-01-08.
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