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We present high spatial resolution observations of ground-state OH masersachieved with the Australia Telescope Compact Array (ATCA). These observationstargeted 253 pointing centres containing OH maser candidates at all fourground-state OH transitions identified in the Southern Parkes Large-Area Surveyin Hydroxyl (SPLASH) across 96 square degrees of the Southern Galactic plane(332\degree$<l<$334\degree and $-$2\degree$<b<+$2\degree,344\degree$<l<$355\degree and $-$2\degree$<b<+$2\degree,358\degree$<l<$4\degree and $+$2\degree$<b<+$6\degree, 5\degree$<l<$10\degreeand $-$2\degree$<b<+$2\degree). We detect maser emission towards 236 fields andsuggest that 7 out of 17 non-detections are due to the slightly lowersensitivity of the ATCA observations, combined with some temporal variability.The superior resolution provided by the ATCA data has allowed us to identify362 OH maser sites in the 236 target fields. Almost half (160 of 362) of thesemasers have been detected for the first time. Comparison between these 362maser sites with information presented in the literature allowed us tocategorize 238 sites as evolved star sites (66\%), 63 as star formation (17\%),eight as supernova remnants and 53 unknown maser sites (15\%). We presentanalysis of the OH masers across the full SPLASH survey range (176 squaredegrees) and find that the detection rate of 1.7 GHz radio continuum sources(18\%) is lower than that previously found at 8.2 and 9.2 GHz (38\%). We alsofind that the velocity separations of evolved star sites with symmetric 1612MHz maser profiles are generally smaller than those with asymmetric profiles.

Accurate OH Maser Positions From The SPLASH Survey III: The Final 96 Square Degrees