Ohio State Route 66

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State Route 66

Route of SR 66 highlighted in red
Route information
Maintained by ODOT
Length118.60 mi[1] (190.87 km)
Major junctions
South end US 36 in Piqua
Major intersections
North end US 20 in Fayette
CountryUnited States
CountiesMiami, Shelby, Auglaize, Allen, Van Wert, Putnam, Paulding, Defiance, Williams, Henry, Fulton
Highway system
  • Ohio State Highway System
SR 65 SR 67

State Route 66 (SR 66) is a north–south state highway in the northwestern portion of the U.S. state of Ohio. Its southern terminus is at U.S. Route 36 (US 36) in Piqua, and its northern terminus is at US 20 in Fayette. South of Defiance it generally follows the route of the former Miami and Erie Canal.

Route description

SR 66 through Spencerville

The portion of SR 66 between Washington Avenue in Piqua and the Miami/Shelby County line is designated as the "Cpl. Samuel F. Pearson Memorial Highway",[2] in honor of a Piqua High School graduate who was killed at Camp Victory in Baghdad, Iraq, while serving in the Army Reserve, on October 10, 2007.[3][4]


  • 1924 – Original route established.[5] Originally routed from Piqua to the Michigan state line 4 miles (6.4 km) north of Fayette.[6]
  • 1931 – Truncated at Fayette; U.S. Route 127 replaced the route’s alignment from Fayette to the Michigan state line.[6]

Major junctions

MiamiPiqua0.000.00 US 36Southern terminus; road continues as US 36 west (Spring Street south)
ShelbyLoramie Township10.7817.35
SR 48 south – Russia, Covington
Northern terminus of SR 48
Cynthian Township12.4420.02 SR 47 – Versailles, Sidney
Fort Loramie16.6826.84 SR 705 (Park Street)
SR 362 north (Elm Street) – Lake Loramie State Park
Southern terminus of SR 362
SR 362 south (First Street)
Northern terminus of SR 362
SR 119 east (Fourth Street)
Southern end of SR 119 concurrency
SR 119 west
Northern end of SR 119 concurrency
New Bremen22.7536.61 SR 274 (Monroe Street)
Saint Marys Township26.8043.13 SR 219 – Montezuma, New Knoxville
St. Marys30.1948.59

SR 29 west / SR 116 north (Main Street) / SR 703 west (Spring Street)
Southern end of SR 29 concurrency; southern terminus of SR 116; eastern terminus of SR 703
SR 29 east (Spring Street)
Northern end of SR 29 concurrency
Noble Township31.34–

US 33 to SR 29 – Columbus, Celina, Fort Wayne Ind.
Salem Township39.0462.83 SR 197 – Celina, Kossuth, Buckland
AllenSpencerville42.8768.99 SR 117 (Fourth Street)
township line
SR 81 west – Willshire
Southern end of SR 81 concurrency
Amanda Township45.2172.76
SR 81 east – Lima
Northern end of SR 81 concurrency
SR 697 west (Second Street)
Southern end of SR 697 concurrency

SR 190 north (Fifth Street) / SR 697 ends
Northern end of SR 697 concurrency
Van WertWashington Township55.38–
US 30 – Van Wert, MansfieldInterchange
US 224 (Third Street) / SR 189 east
Southern end of US 224 concurrency; western terminus of SR 189
Monterey Township60.9898.14
US 224 west – Van Wert
Northern end of US 224 concurrency
PauldingWashington Township67.10107.99 SR 114 – Grover Hill, Cloverdale
Brown Township73.17117.76
SR 613 west – Melrose
Southern end of SR 613 concurrency
SR 613 east (Walnut Street) – Continental
Northern end of SR 613 concurrency
Auglaize Township80.46129.49
SR 637 south – Paulding
Northern terminus of SR 637

SR 66 Truck north (Downs Street)
Southern terminus of SR 66 Truck
SR 15 / SR 18 east (Second Street) – Mercy Hospital of Defiance
Southern end of SR 15/SR 18 concurrency

SR 111 south / SR 66 Truck south (Clinton Street) / West 2nd Street
Northern termini of SR 111 and SR 66 Truck
SR 15 / SR 18 west (Session Street)
Northern end of SR 15/SR 18 concurrency
US 24 – Napoleon, AntwerpInterchange; exit 26 on US 24
WilliamsSpringfield Township98.71158.86
US 6 west – Edgerton
Southern end of US 6 concurrency
HenryRidgeville Township101.85163.91
US 6 east – Napoleon
Northern end of US 6 concurrency
102.52164.99 SR 34 – Napoleon, Bryan, Northwest State Community College
SR 2 west (Stryker Street)
Southern end of SR 2 concurrency
German Township108.85175.18
SR 2 east
Northern end of SR 2 concurrency
US 20A east – Wauseon
Southern end of US 20A concurrency
US 20A west – West Unity
Northern end of US 20A concurrency
Franklin Township112.71181.39 I-80 / I-90 / Ohio Turnpike – Toledo, ChicagoExit 25 on the Ohio Tpk.
Fayette118.60190.87 US 20 (Main Street)Northern terminus; road continues as Fayette Street
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

SR 66 Truck

Truck plate.svg

State Route 66 Truck

LocationDefiance, Ohio
Length1.909 mi[7] (3.072 km)

SR 66 Truck is a truck route which bypasses a low railroad bridge along SR 66 in southern Defiance. Beginning at a signalized intersection with South Jefferson Avenue (SR 66), it heads west on Downs Street through a residential neighborhood. At South Clinton Street, SR 111, SR 111 Truck becomes concurrent with SR 66 Truck and both head northwest along Deatrick Street passing a supermarket and three sets of railroad tracks at-grade. At Baltimore Street (former SR 424), the two truck routes turn northeast onto Holgate Avenue paralleling the Maumee River. After heading through a residential neighborhood of the city, the road bends to the east and transitions to West Third Street. After passing under a railroad bridge, it passes numerous businesses and city facilities before reaching SR 111 again at the intersection of Third Street and Clinton Street. While SR 111 Truck ends, SR 66 Truck continues on South Clinton Street with SR 111 for one block before ending at SR 15/SR 18/SR 66.[8]


  1. ^ a b "DESTAPE". Ohio Department of Transportation. July 3, 2014. Retrieved September 22, 2014.
  2. ^ "5533.605 Cpl. Samuel F. Pearson Memorial Highway". Ohio Revised Code. LAW Writer. April 7, 2009. Retrieved May 24, 2014.
  3. ^ Staff (May 25, 2009). "Route 66 Renamed In Honor Of Fallen Soldier". WHIO-TV. Retrieved May 24, 2014.
  4. ^ Archdeacon, Tom (May 17, 2014). "Arch: Piqua's Pearson gone but not forgotten". Dayton Daily News. Retrieved May 24, 2014.
  5. ^ Explanation of the Ohio State Highway System (The Unofficial Ohio State Highways Web Site) by John Simpson Archived May 23, 2006, at the Wayback Machine
  6. ^ a b Route 66 (The Unofficial Ohio State Highways Web Site) by John Simpson Archived December 23, 2004, at the Wayback Machine
  7. ^ "Data Download - ODOT TIMS (Road Inventory shapefile)". Ohio Department of Transportation. Retrieved April 14, 2019.
  8. ^ Google (April 25, 2019). "State Route 66 Truck" (Map). Google Maps. Google. Retrieved April 25, 2019.

External links