Helen Street Interchange is junction 24 of the M8. It is a fully signalised straight Diamond layout connecting to the unclassified but dualled Helen Street. This in turn connects the A761 at a roundabout a short distance to the south with the A8 at another roundabout to the north. For a few years prior to the installation of the U turn ramp at Seaward Street Interchange to the east, eastbound traffic on the M8 left at this junction to reach the M77, via the B768, Dumbreck Road.
The two crossroads at the junction are protected by yellow boxes, and three of the four sliproads have traffic islands separating turning traffic - the eastbound onslip does not. Both of the offlslips provide two lanes for left turns but only one for right, while Helen Street has a third lane northbound for right turning traffic onto the motorway.