The UKTram website has a report on costs of tramways at

This should be the starting point for any discussion of conventional tram costs.

As Mat says, the cost can depend on all sorts of factors, but in general £20-£30 m per km is a good ball-park figure. This would include the cost of vehicles, as with a typical service frequency the number of vehicles is roughly proportional to the track length.

Costs should include the cost of utility diversions and obtaining TWAO. It might be possible to economise on these, but you are getting into experimental territory here.

David Walmesley

See also https://bathtrams.uk/comparison-of-costs-for-tram-track-vs-new-highway/

See Also:

-1 Likely cost of Tram Tracks £10m /km in Germany.

0 Likely Tram Track Installations costs for Bath – French Tram Engineering Experts EGIS

1 tram light rail track installation costs

2 Recent German Light Rail Tram Track costs – £13 – £20m / km

3 UK Tram track light rail installation costs – “circa £20m to £30m per route kilometre”

4 Tram track installation costs – where can the money come from to install trams in cities?

5 New Low Cost Tram Light Rail Track Systems Have Potential to Minimise Traffic Disruption and the Need to Divert Underground Services

6 Moving / re-location of services / utilities  for trams installation need not be expensive or even necessary as in Edinburgh

7 Buried underground cables pipes utilities movement diversions and tram light rail installations

8 Tram light rail track installation costs

9 Professor Lesley’s initial analysis into Bath Tram likely installation costs

10 Modern VLR, Very Light Rail track costs – around £5 – £10m/km