Already asked on https://webapps.stackexchange.com/questions/141455/route-planners-with-route-avoidance-features but may be here is a most adequate place to make the question.
In my quest to search route planners, I didn't find yet one which has the following two features:
Avoid a specific point/street. Go from X to Y avoiding passing in Z. As is possible in some to add waypoints, it should also be possible to add nowaypoints via user interaction.
Avoid streets with incline superior to X%, where X is input by the user via a text box. It is particularly useful for cycling, to avoid steep inclines going up, and dangerous descents going down.
Does anyone now about some web page which has such features? Tired of searching, didn't find anything. Thanks.