|Distance:||5.9 miles (9.5 km)|
|Meets:||A6181, A6177, A644, A629|
|Old route now:||A644|
|Route outline (key)|
The B6145 runs over the hills to the west of Bradford.
The road originally started on the A647 by the town hall in Bradford City Centre. However, this easternmost section has now been turned into a public square and so the B6145 has been truncated by a short distance to start at traffic lights on the A6181 inner ring road. It heads west along Thornton Road.
The route has some way to go before leaving the Bradford urban area. It eventually crosses the A6177 outer ring road at traffic lights. After passing Four Lane Ends fields become visible on the left but the B6145 never becomes completely rural. There is about another mile of suburbs then a short break in the houses before the road enters Thornton.
The road continues west with the church spire visible dead ahead. After passing the church it skirts the village centre and passes the cemetery. The road then goes over a disused railway cutting before crossing a few fields to reach a light-controlled crossroads with the A644 at Keelham.
The final 700 m of the route takes us to the A629 at Sun Side. Since restriction of the A629 / A644 junction at Denham Cough (1 km north of here) – forbidding access to the A629 from the northbound A644 – traffic wishing to make this connection now has to follow the B6145 west along the aforementioned final stretch of the B-road; some maps even show this section as having been renumbered as a branch of the A644 (although this is not reflected in the signage).