Interstate 164 was signed as an east/west route between Exits 0 and 5 (SR 662) and with north/south banners from Exit 5 to I-64 (Exit 21). Center line ITS reference markers were posted along the freeway at 2/10th of a mile intervals. Typical of Indiana three digit Interstates, there were no control cities for I-164, although on Interstate 64, Evansville and Henderson, Kentucky were used for southbound.
Superseding a portion of SR 57 north from Evansville to Wheatonville, Interstate 164 combined with the state road from a pair of wye interchanges at Exit 19 to I-64. SR 57 emerges from the freeway southwest to Evansville Regional Airport (EVV).
Interstate 164 was designated in 1968 and approved by AASHTO on June 23, 1969. The freeway was not completed until August 2, 1990. Work at the south end included construction of a $46 million interchange with U.S. 41 and Veterans Memorial Parkway at the south end. This was the time was the most expensive interchange built for an Interstate highway in Indiana at the time.1
The adjacent Lloyd Expressway (State Road 66) stems west from the I-164 freeway at Exit 7. It was completed in 1988.1 I-164 was subsequently named the Robert D. Orr Highway in February 1989. Orr was a former Indiana Governor who lived in Evansville and supported the $160-million road.2
The first step in the renumbering of Interstate 164 as I-69 was made at the AASHTO Fall meeting on October 21, 2013. Approval was given then to redesignate 20.70 miles of the 21.39-mile route as an extension of Interstate 69 south from I-64 to U.S. 41 in Evansville. Following approval by the Federal Highway Administration (FHWA), INDOT began replacing signs in November 2014.3,4 The remaining mileage for I-164 represents the connection with Veterans Memorial Parkway, a city-maintained expressway leading west from U.S. 41.