The Kilometre Zero of the expressway starts at Sungai Nyior junctions in Butterworth, Penang.
The construction of BKE started in December 1994 and completed in September 1996.
KLBK Sdn Bhd
Konsortium Lebuhraya Butterworth-Kulim (KLBK) Sdn Bhd, commercially known as Buterworth Kulim Expressway (BKE) a wholly owned subsidiary of PLUS Expressway Berhad ("PLUS Expressways") has been awarded the concession and contract to construct and operate the highway of dual two (2) lane carriageway with separate motorcycle tracks and related highway facilities for the 16.78 km highway. The concession period is for thirty-two (32) years (June 1994 to June 2026, including 2 years construction period), after which the highway will be transferred to the Government.
Geographically, the terrain between KM 5.00 (start point) and KM 11.00 is rather flat, passing through paddy field areas. From KM 11.00 to KM 19.00, the terrain is slightly undulating, where cut and fill slopes are common features. The terrain is again flat from KM 19.00 to KM 21.78 (end point), mainly passing through the estates and developing residential areas.