Baker St. Jubilee line platforms

[Deleted]

Hi

I notice that a couple of 'realistic' line layout maps show the Jubilee Line crossing over:

Is the platform arrangement as indicated, side-by-side at the same level or is there a level difference, or maybe even stacked on top of each other? Unfortunately there isn't an axonometric diagram of a Baker St to reference.

Also, I notice the cross-overs to the Bakerloo Line. Am I correct in thinking they're used for access to maintenance/storage sheds?

[superteacher]

Southbound Bakerloo and southbound Jubilee are cross platform at the same level.

[Chris L]

Northbound and southbound are stacked and both are same level interchange.

The Bakerloo used to run to Stanmore as well as the existing service hence the crossovers.

I have seen them used by engineering trains.

[John Tuthill]

Apr 6, 2019 13:57:10 GMT @juniperf63 said:

Hi

I notice that a couple of 'realistic' line layout maps show the Jubilee Line crossing over:

Is the platform arrangement as indicated, side-by-side at the same level or is there a level difference, or maybe even stacked on top of each other? Unfortunately there isn't an axonometric diagram of a Baker St to reference.

Also, I notice the cross-overs to the Bakerloo Line. Am I correct in thinking they're used for access to maintenance/storage sheds?

Not entirely. Don't forget that before the Jubilee line was completed, the Bakerloo had two branches north of Baker Street,one branch went to Stanmore, which is now the Jubilee Line, the other branch is basically what the Bakerloo line is today.

[norbitonflyer]

AS can be seen from the diagram, the junctions are beyond the platforms in both directions, and hence the southbound Jubilee platform (7) was built when the Bakerloo was extended to Stanmore, and the northbound (10) only when the Jubilee Line was built 40 years later. This arrangement was also used at the proposed but never completed junction at South Kensington (two westbound but only one eastbound). The idea was the converging routes would each have their own platforms, to minimise the possibility of having to wait in a tunnel for a junction to clear (see also the original layout of Camden Town, before the City Branch was extended there), but in the diverging direction the cost of the extra station tunnel was avoided.

[35b]

Apr 6, 2019 22:24:20 GMT norbitonflyer said:

AS can be seen from the diagram, the junctions are beyond the platforms in both directions, and hence the southbound Jubilee platform (7) was built when the Bakerloo was extended to Stanmore, and the northbound (10) only when the Jubilee Line was built 40 years later. This arrangement was also used at the proposed but never completed junction at South Kensington (two westbound but only one eastbound). The idea was the converging routes would each have their own platforms, to minimise the possibility of having to wait in a tunnel for a junction to clear (see also the original layout of Camden Town, before the City Branch was extended there), but in the diverging direction the cost of the extra station tunnel was avoided.

I’d wondered about the reasoning. From a passenger point of view, I’d seen this as having to second guess which platform would take me into London, but sharing the platform where a passenger would know precisely where they want to head.