Wiktionary
be along
vb. To arrive
Usage examples of "be along".
She's supposed to be along in the next ten minutes, but she may be delayed.
She'd bleed out soon, and message or no, someone would be along to check on the raiders eventually.
If his analysis of the situation was correct, a Flap-jack picket should be along before too long .
Some said she was married, and there was no use sniffing around because her husband would be along.