|Location Map ( geo)|
|Distance:||4.6 miles (7.4 km)|
|Meets:||A404, A4178, A411|
|Route outline (key)|
The A4145 is an urban A-road in south Hertfordshire.
Batchworth - Watford
The road starts at a roundabout on the A404 in Batchworth, on the eastern edge of Rickmansworth. The road heads east along a rural road between a river and a golf course, before bending sharply left to cross the River Colne and then go under the Metropolitan Line.
The road now becomes more urban. It takes a roundabout course through the suburbs of Watford. After running along Tolpits Lane the road turns right onto Hagden Lane at a mini-roundabout. Several tight corners follow before the road TOTSOs left at traffic lights to pass the hospital and run along Vicarage Road to meet a gyratory at traffic lights (although the original line of the A4145 was along the pedestrianised road ahead. The A4145 reappears on the opposite side of the gyratory and continues along the remainder of Vicarage Road to end on the A411, which at this point forms a one-way ring road of Watford town centre. The original line of the A411 was along Watford High Street and the A4145 reached it by going along King Street.
The A4145 came into existence in the 1970s. It was numbered the B4504 prior to this, although that road was unclassified until the 1930s.