That's not Jenkins Street (Small Heath) Bridge. It's still a single bridge. The bridge in the photo is located on Bordesley Middleway.
https://www.google.com/maps/@52.4711901,-1.8761682,3a,75y,317.44h,94.65t/data=!3m6!1e1!3m4!1sjczx27yuCX88b4ArqSKbNw!2e0!7i16384!8i8192?entry=ttu