There are two options; he could have taken the I-35E or S. Marsalis Ave.
Looking at a map of Dallas dated 1962 shows that I-35 was under construction in the area of Clarendon Drive and only proposed (not yet under construction) south of that area. Therefore, I submit that Bowley probably took Marsalis Ave. A check of google maps shows this route takes about 17 minutes. Your arithmetic doesn’t work so well now, does it?
For a moment I thought it might be possible to have a normal, reasonable, conversation with you, but, once again, you blew it.
You can submit all you want but it doesn't matter a damned thing because google maps calculates based on present day traffic conditions and not the traffic in 1963, which, I submit, was not as heavy as it is today. And my arithmetic is actually about right, because if he picked up his daughter at 12.55, a trip of "
about 17 minutes" would still have gotten him to 10th street at 1.12. Two minutes less and he gets there at 1.10 just like he said. Either way, when he got there, Tippit had already been shot, which means he was killed before 1.14 - 1.15!