Is this this the longest running bus rail replacement service?

[Jetlagged]

On 1st December, 2009, the rail line between Coimbra and Serpins in Portugal closed and was replaced by a replacement bus service. The original plan was to convert the old rail line to a light rail system with extensions in Coimbra city to reach the hospital. Almost 17 years later, and after a rethink, we now have electric buses running along a dedicated busway. This has to be one for the Guinness Book of Records as the longest replacement bus service! Unless you know differently, if course.