ðiːz wʊdhɐv ɐkˈɑːmədˌeɪɾᵻd ɹˈeɪl ˈɪnsɛt ˌɪntʊ ɐ kˈɑːŋkɹiːt bˈeɪs ænd pɹɪzˈuːməbli kæn stˈɪl biː jˈuːzd ɪn ðɪs wˈeɪ ɪnðə fjˈuːtʃɚ.
These would have accommodated rail inset into a concrete base and presumably can still be used in this way in the future.